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ROLLOUT 1 · Backblaze/B2_Command_Line_Tool

backblaze__b2_command_line_tool-488

Not solved
453 stotal time
15tool calls
15model calls
6,573tokens generated
149,390prompt tokens read

Empty agent patch

Turn by turn

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System instructions 4,822 characters
You are a principal Python software engineer resolving a repository issue in `/workspace`.
Your sole objective is to produce a minimal, root-cause source patch that passes every hidden fail-to-pass and pass-to-pass regression test on the first grading run.

## Critical Environment & Grader Rules
1. **Air-Gapped Sandbox & Available CLI Tools**: No network access. Never run `pip`, `uv`, `conda`, or `git fetch`. Note: `rg` (`ripgrep`) is NOT installed in the container — always use `grep -rn --include="*.py"` for fast exact searches so you never waste a tool call on `command not found`.
2. **Protected Grading Paths**: Before running official verification, the grading harness **strips and reverts all changes** to `tests/`, `test/`, `testing/`, `test_*.py`, `*_test.py`, `conftest.py`, `pyproject.toml`, `setup.cfg`, `pytest.ini`, and `tox.ini`. Every part of your fix MUST reside in non-test production source files.
3. **Untracked File Trap (`git add -N .`)**: `submit_patch` stages ALL untracked files inside `/workspace`! Never leave reproduction or scratch files inside `/workspace` — run reproductions inline via `python3 - <<'PY'` or inside `/tmp/repro.py` in a single `run_command`.
4. **Stdout Truncation Rule**: `run_command` truncates stdout after the first 5,000 characters from the TOP. Always run pytest quietly with short tracebacks:
   `pytest path/to/test_file.py -k pattern -q --tb=short --no-header`
   If a test file is large, redirect output to `/tmp/pytest.log` and inspect `tail -n 80 /tmp/pytest.log` so failure tracebacks at the bottom are never cut off.
5. **Strict Pacing Discipline**: `get_status` and `submit_patch` are free and do NOT count toward `max_tool_calls`. Target **16-22 counted tool calls total**, and **begin your first `edit_file` change no later than tool call 15**. Reserve at least 4 calls for verification, `git status --short && git diff`, and submission.

## Execution Protocol

### Phase 1 — Pinpoint Code & Tests Immediately (1-2 tool calls)
- The user message already contains `Workspace Layout` — do NOT waste a turn running `ls` on top-level directories.
- Run a single compound `run_command` with `grep -rn --include="*.py"` to locate:
  (a) the exact symbols, error strings, or functions from the problem description,
  (b) **all parallel or sibling implementations** (for example sync + async variants, `Client` + `AsyncClient`, serializer + deserializer, multiple backends/dialects, base + subclass methods, `__init__.py` / `__all__` exports), and
  (c) the closest existing unit test files under `tests/`.

### Phase 2 — Deep Read & Spec Anchor (2-5 tool calls)
- Use `read_file` with generous `start_line` and `end_line` windows (180-300 lines per call so you read whole modules in fewer calls) on the target function/class, callers, type annotations, and neighboring tests.
- Before editing, verify every explicit and implicit requirement from the issue: exact parameter names, defaults, boundary/domain edge cases, exception types/messages, `None` vs empty collection vs falsy (`0`, `False`, `""`) semantics, mutability/copying, and return types.

### Phase 3 — Reproduce Bug in One Call (1 tool call)
- Run ONE concise command (`python3 - <<'PY' ... PY` or targeted `pytest ... -q --tb=short --no-header`) via `run_command` to observe the exact pre-fix failure. Do NOT spend multiple tool calls writing separate reproduction scripts.

### Phase 4 — Surgical Implementation Across All Parallel Paths (1-4 tool calls)
- Begin editing by tool call 15! Use `edit_file` with 4-6 lines of exact surrounding context copied from `read_file`.
- Update ALL parallel codepaths (sync/async, multiple classes/dialects, type hints) consistently so partial fixes do not fail sibling tests.
- **2-Strike Edit Rule**: If `edit_file` fails twice on the same block due to whitespace or escaping, do not retry `edit_file` a third time — apply an atomic Python transformation via `run_command` and immediately verify `python3 -m py_compile path/to/file.py`.

### Phase 5 — Edge-Case Verification, Diff Hygiene & Clean Exit (2-4 tool calls)
- Run a single compound `run_command` testing both your reproduction + boundary edge cases (`None`, empty input, leading/trailing delimiters, subdomain/prefix boundaries, subclass/async parity) AND the relevant existing `pytest` module(s) with `-q --tb=short --no-header`.
- Run `git status --short && git diff` via `run_command`. Confirm:
  - ZERO untracked (`??`) files in `/workspace` (`rm -f` any untracked workspace files immediately),
  - ZERO modifications to `tests/` or protected config files (`git checkout -- tests/` if touched),
  - Minimal, clean diff with valid imports and indentation.
- Call `submit_patch` once verification passes, then respond with a brief 2-sentence plain-text summary and make NO further tool calls.
Task prompt 6,466 characters
You are evaluating a software engineering task for repository Backblaze/B2_Command_Line_Tool.

Problem Statement:
b2.api.B2Api.get_bucket_by_name does not work with bucket-scoped application keys
I am using Duplicity 0.7.17 and b2 1.3.2.

duplicity is executed using

```
duplicity \
    --verbosity debug \
    /backup \
    "b2://$B2_APP_KEY_ID:$B2_APP_KEY@$B2_BUCKET_NAME"
```

Where `$B2_APP_KEY_ID` and `$B2_APP_KEY` are URL-encoded strings which were output from a call to:

```
b2 create-key \
    --bucket "$B2_BUCKET_NAME" \
    "$B2_KEY_NAME" \
    listFiles,readFiles,writeFiles,deleteFiles,listBuckets
```

Duplicity fails with the following traceback:

```
Traceback (innermost last):
  File "/usr/local/bin/duplicity", line 1555, in <module>
    with_tempdir(main)
  File "/usr/local/bin/duplicity", line 1541, in with_tempdir
    fn()
  File "/usr/local/bin/duplicity", line 1380, in main
    action = commandline.ProcessCommandLine(sys.argv[1:])
  File "/usr/local/lib/python2.7/dist-packages/duplicity/commandline.py", line 1135, in ProcessCommandLine
    backup, local_pathname = set_backend(args[0], args[1])
  File "/usr/local/lib/python2.7/dist-packages/duplicity/commandline.py", line 1010, in set_backend
    globals.backend = backend.get_backend(bend)
  File "/usr/local/lib/python2.7/dist-packages/duplicity/backend.py", line 223, in get_backend
    obj = get_backend_object(url_string)
  File "/usr/local/lib/python2.7/dist-packages/duplicity/backend.py", line 209, in get_backend_object
    return factory(pu)
  File "/usr/local/lib/python2.7/dist-packages/duplicity/backends/b2backend.py", line 87, in __init__
    self.bucket = self.service.get_bucket_by_name(bucket_name)
  File "/usr/local/lib/python2.7/dist-packages/b2/api.py", line 222, in get_bucket_by_name
    for bucket in self.list_buckets():
  File "/usr/local/lib/python2.7/dist-packages/logfury/v0_1/trace_call.py", line 84, in wrapper
    return function(*wrapee_args, **wrapee_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/b2/api.py", line 251, in list_buckets
    self.check_bucket_restrictions(bucket_name)
  File "/usr/local/lib/python2.7/dist-packages/logfury/v0_1/trace_call.py", line 84, in wrapper
    return function(*wrapee_args, **wrapee_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/b2/api.py", line 375, in check_bucket_restrictions
    raise RestrictedBucket(allowed_bucket_name)
 RestrictedBucket: Application key is restricted to bucket: pc-backup
```

Internally<sup>[[1]](https://bazaar.launchpad.net/~duplicity-team/duplicity/0.8-series/view/head:/duplicity/backends/b2backend.py#L88)</sup>, Duplicity uses `b2.api.B2Api.get_bucket_by_name`, passing in the name of the bucket. This method calls `b2.api.B2Api.list_buckets` without passing the bucket name, so we get the permission error indicated above.

This looks related to changes in #474.

## Task Budget (Session terminates when any budget is exhausted)
- Time allowance: 7.5 minutes
- Tool calls allowance: 30 calls
- Max loop iterations: 40 turns

## Execution Environment Rules
- Single command timeout: 90 seconds (commands exceeding this fail without ending the session)
- Command output limit: 5000 characters
- File view limit: 150 lines per read_file call
- File character limit: 10000 characters per read_file call
- Environment is offline (no network/PyPI access). All repository and test dependencies are ALREADY pre-installed. Do NOT attempt to run pip install or download packages.

## Instructions:
0. All source code is under `/workspace`. Do NOT search outside `/workspace` (e.g. `/usr/`, `/wheels/`, system site-packages). If imports fail, the issue is in the source code under `/workspace`, not in missing system packages.
1. Analyze the problem statement and any provided hints carefully to identify all requested script paths, CLI subcommands, or Python modules.
2. Inspect existing codebase conventions and test files before making edits.
3. Verify your implementation using targeted tests or inline assertions before submitting.
4. Call submit_patch only after your implementation is complete and verified.
5. As your final action, you must return a text-only response reporting your completion to terminate the session.
## Workspace Layout
The repository is located at `/workspace`. Here is the directory tree (up to 3 levels):
```
./LICENSE
./MANIFEST.in
./Makefile
./README.md
./README.release.md
./appveyor.yml
./b2
./b2/__init__.py
./b2/__main__.py
./b2/account_info
./b2/account_info/__init__.py
./b2/account_info/abstract.py
./b2/account_info/exception.py
./b2/account_info/in_memory.py
./b2/account_info/sqlite_account_info.py
./b2/account_info/test_upload_url_concurrency.py
./b2/account_info/upload_url_pool.py
./b2/api.py
./b2/b2http.py
./b2/bounded_queue_executor.py
./b2/bucket.py
./b2/cache.py
./b2/console_tool.py
./b2/download_dest.py
./b2/exception.py
./b2/file_version.py
./b2/parse_args.py
./b2/part.py
./b2/progress.py
./b2/raw_api.py
./b2/raw_simulator.py
./b2/session.py
./b2/sync
./b2/sync/__init__.py
./b2/sync/action.py
./b2/sync/exception.py
./b2/sync/file.py
./b2/sync/folder.py
./b2/sync/folder_parser.py
./b2/sync/policy.py
./b2/sync/policy_manager.py
./b2/sync/report.py
./b2/sync/scan_policies.py
./b2/sync/sync.py
./b2/transferer.py
./b2/unfinished_large_file.py
./b2/upload_source.py
./b2/utils.py
./b2/version.py
./ci
./ci/appveyor
./ci/appveyor/install.ps1
./ci/appveyor/run_with_env.cmd
./contrib
./contrib/bash_completion
./contrib/bash_completion/b2
./contrib/color-b2-logs.sh
./contrib/debug_logs.ini
./doc
./doc/Makefile
./doc/bash_completion.md
./doc/source
./doc/source/b2.account_info.rst
./doc/source/b2.rst
./doc/source/b2.sync.rst
./doc/source/conf.py
./doc/source/index.rst
./doc/source/modules.rst
./pre-commit.sh
./requirements-setup.txt
./requirements-test.txt
./requirements.txt
./run-unit-tests.sh
./setup.cfg
./setup.py
./test
./test/__init__.py
./test/stub_account_info.py
./test/test_account_info.py
./test/test_api.py
./test/test_b2http.py
./test/test_base.py
./test/test_bounded_queue_executor.py
./test/test_bucket.py
./test/test_console_tool.py
./test/test_download_dest.py
./test/test_exception.py
./test/test_parse_args.py
./test/test_policy.py
./test/test_progress.py
./test/test_raw_api.py
./test/test_scan_policies.py
./test/test_session.py
./test/test_sync.py
./test/test_sync_report.py
./test/test_utils.py
./test_b2_command_line.py
```
Turn 1at 37 s505 tokens out4,327 prompt tokens
The user is reporting an issue where `b2.api.B2Api.get_bucket_by_name` doesn't work with bucket-scoped application keys.
The traceback shows:
```
  File "/usr/local/lib/python2.7/dist-packages/b2/api.py", line 222, in get_bucket_by_name
    for bucket in self.list_buckets():
  File "/usr/local/lib/python2.7/dist-packages/b2/api.py", line 251, in list_buckets
    self.check_bucket_restrictions(bucket_name)
  File "/usr/local/lib/python2.7/dist-packages/b2/api.py", line 375, in check_bucket_restrictions
    raise RestrictedBucket(allowed_bucket_name)
 RestrictedBucket: Application key is restricted to bucket: pc-backup
```

It seems `get_bucket_by_name` calls `list_buckets()` without any arguments, which then calls `check_bucket_restrictions(bucket_name)` where `bucket_name` is likely `None`. If the application key is restricted to a specific bucket, `list_buckets()` might fail if it doesn't know which bucket to list (or if it tries to list all buckets).

Looking at the traceback:
`get_bucket_by_name` -> `list_buckets()` (without arguments) -> `check_bucket_restrictions(bucket_name)` (where `bucket_name` is `None`).

The issue states: "Internally, Duplicity uses `b2.api.B2Api.get_bucket_by_name`, passing in the name of the bucket. This method calls `b2.api.B2Api.list_buckets` without passing the bucket name, so we get the permission error indicated above."

So the fix should be to pass the `bucket_name` to `list_buckets()` if it's available in `get_bucket_by_name`.

Wait, let's examine `b2/api.py`.
TOOL CALL · run_command
{
  "command": "grep -rn --include=\"*.py\" \"get_bucket_by_name\" ./b2 ./test"
}
Result of run_command 2,629 characters
{
  "status": "ok",
  "stdout": "./b2/api.py:206:    def get_bucket_by_name(self, bucket_name):\n./b2/api.py:263:                bucket_id = self.get_bucket_by_name(bucket_name).id_\n./b2/raw_simulator.py:709:            bucket = self._get_bucket_by_name(bucket_name)\n./b2/raw_simulator.py:924:    def _get_bucket_by_name(self, bucket_name):\n./b2/sync/folder.py:230:        self.bucket = api.get_bucket_by_name(bucket_name)\n./b2/console_tool.py:299:        bucket = self.api.get_bucket_by_name(args.bucketName)\n./b2/console_tool.py:405:            bucket_id_or_none = self.api.get_bucket_by_name(args.bucket).id_\n./b2/console_tool.py:433:        bucket = self.api.get_bucket_by_name(args.bucketName)\n./b2/console_tool.py:529:        bucket = self.api.get_bucket_by_name(args.bucketName)\n./b2/console_tool.py:656:        bucket = self.api.get_bucket_by_name(args.bucketName)\n./b2/console_tool.py:691:        bucket = self.api.get_bucket_by_name(args.bucketName)\n./b2/console_tool.py:733:        bucket = self.api.get_bucket_by_name(args.bucketName)\n./b2/console_tool.py:779:        bucket = self.api.get_bucket_by_name(args.bucketName)\n./b2/console_tool.py:802:        bucket = self.api.get_bucket_by_name(args.bucketName)\n./b2/console_tool.py:932:        bucket = self.api.get_bucket_by_name(args.bucketName)\n./b2/console_tool.py:983:        bucket = self.api.get_bucket_by_name(args.bucketName)\n./b2/console_tool.py:1236:        bucket = self.api.get_bucket_by_name(args.bucketName)\n./b2/console_tool.py:1303:        bucket = self.api.get_bucket_by_name(args.bucketName)\n./test/test_console_tool.py:388:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\n./test/test_console_tool.py:395:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\n./test/test_console_tool.py:603:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\n./test/test_console_tool.py:610:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\n./test/test_console_tool.py:794:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\n./test/test_console_tool.py:829:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\n./test/test_console_tool.py:873:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\n./test/test_console_tool.py:913:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\n./test/test_console_tool.py:1070:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\n./test/test_policy.py:69:        api.get_bucket_by_name.return_value = bucket\n./test/test_sync.py:248:        self.api.get_bucket_by_name.return_value = self.bucket\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 505 tokens · stopped: STOP
<|channel>thought The user is reporting an issue where `b2.api.B2Api.get_bucket_by_name` doesn't work with bucket-scoped application keys. The traceback shows: ``` File "/usr/local/lib/python2.7/dist-packages/b2/api.py", line 222, in get_bucket_by_name for bucket in self.list_buckets(): File "/usr/local/lib/python2.7/dist-packages/b2/api.py", line 251, in list_buckets self.check_bucket_restrictions(bucket_name) File "/usr/local/lib/python2.7/dist-packages/b2/api.py", line 375, in check_bucket_restrictions raise RestrictedBucket(allowed_bucket_name) RestrictedBucket: Application key is restricted to bucket: pc-backup ``` It seems `get_bucket_by_name` calls `list_buckets()` without any arguments, which then calls `check_bucket_restrictions(bucket_name)` where `bucket_name` is likely `None`. If the application key is restricted to a specific bucket, `list_buckets()` might fail if it doesn't know which bucket to list (or if it tries to list all buckets). Looking at the traceback: `get_bucket_by_name` -> `list_buckets()` (without arguments) -> `check_bucket_restrictions(bucket_name)` (where `bucket_name` is `None`). The issue states: "Internally, Duplicity uses `b2.api.B2Api.get_bucket_by_name`, passing in the name of the bucket. This method calls `b2.api.B2Api.list_buckets` without passing the bucket name, so we get the permission error indicated above." So the fix should be to pass the `bucket_name` to `list_buckets()` if it's available in `get_bucket_by_name`. Wait, let's examine `b2/api.py`.<channel|><|tool_call>call:run_command{command:<|"|>grep -rn --include="*.py" "get_bucket_by_name" ./b2 ./test<|"|>}<tool_call|><|tool_response>
Turn 2at 48 s129 tokens out5,912 prompt tokens
Okay, `b2/api.py` line 206 is where `get_bucket_by_name` is defined.
Let's read `b2/api.py` around that area and also `list_buckets` and `check_bucket_restrictions`.
The traceback said `list_buckets` starts at line 251 and `check_bucket_restrictions` at line 375.
TOOL CALL · read_file
{
  "end_line": 400,
  "filepath": "b2/api.py",
  "start_line": 200
}
Result of read_file 6,531 characters
{
  "status": "ok",
  "filepath": "b2/api.py",
  "content": "        )\n        return self.transferer.download_file_from_url(url, download_dest, progress_listener, range_)\n\n    def get_bucket_by_id(self, bucket_id):\n        return Bucket(self, bucket_id)\n\n    def get_bucket_by_name(self, bucket_name):\n        \"\"\"\n        Returns the bucket_id for the given bucket_name.\n\n        If we don't already know it from the cache, try fetching it from\n        the B2 service.\n        \"\"\"\n        # If we can get it from the stored info, do that.\n        self.check_bucket_restrictions(bucket_name)\n        id_ = self.cache.get_bucket_id_or_none_from_bucket_name(bucket_name)\n        if id_ is not None:\n            return Bucket(self, id_, name=bucket_name)\n\n        for bucket in self.list_buckets():\n            if bucket.name == bucket_name:\n                return bucket\n        raise NonExistentBucket(bucket_name)\n\n    def delete_bucket(self, bucket):\n        \"\"\"\n        Deletes the bucket remotely.\n        For legacy reasons it returns whatever server sends in response,\n        but API user should not rely on the response: if it doesn't raise\n        an exception, it means that the operation was a success\n        \"\"\"\n        account_id = self.account_info.get_account_id()\n        return self.session.delete_bucket(account_id, bucket.id_)\n\n    def list_buckets(self, bucket_name=None):\n        \"\"\"\n        Calls b2_list_buckets and returns a list of buckets.\n\n        When no bucket name is specified, returns *all* of the buckets\n        in the account.  When a bucket name is given, returns just that\n        bucket.  When authorized with an application key restricted to\n        one bucket, you must specify the bucket name, or the request\n        will be unauthorized.\n\n        :param bucket_name: Optional: the name of the one bucket to return.\n        :return: A list of Bucket objects.\n        \"\"\"\n        account_id = self.account_info.get_account_id()\n        self.check_bucket_restrictions(bucket_name)\n\n        # TEMPORARY work around until we fix the API endpoint bug that things requests\n        # with a bucket name are not authorized.  When it's fixed, well just pass the\n        # bucket name (or None) to the raw API.\n        if bucket_name is None:\n            bucket_id = None\n        else:\n            allowed = self.account_info.get_allowed()\n            if allowed['bucketId'] is not None:\n                # We just checked that if there is a bucket restriction we have a bucket name\n                # and it matches.  So if there's a restriction we know that's the bucket we're\n                # looking for.\n                bucket_id = allowed['bucketId']\n            else:\n                bucket_id = self.get_bucket_by_name(bucket_name).id_\n\n        response = self.session.list_buckets(account_id, bucket_id=bucket_id)\n        buckets = BucketFactory.from_api_response(self, response)\n\n        if bucket_name is not None:\n            # If a bucket_name is specified we don't clear the cache because the other buckets could still\n            # be valid. So we save the one bucket returned from the list_buckets call.\n            for bucket in buckets:\n                self.cache.save_bucket(bucket)\n        else:\n            # Otherwise we want to clear the cache and save the buckets returned from list_buckets\n            # since we just got a new list of all the buckets for this account.\n            self.cache.set_bucket_name_cache(buckets)\n        return buckets\n\n    def list_parts(self, file_id, start_part_number=None, batch_size=None):\n        \"\"\"\n        Generator that yields a Part for each of the parts that have been uploaded.\n\n        :param file_id: the ID of the large file that is not finished\n        :param start_part_number: the first part number to return.  defaults to the first part.\n        :param batch_size: the number of parts to fetch at a time from the server\n        \"\"\"\n        batch_size = batch_size or 100\n        while True:\n            response = self.session.list_parts(file_id, start_part_number, batch_size)\n            for part_dict in response['parts']:\n                yield PartFactory.from_list_parts_dict(part_dict)\n            start_part_number = response.get('nextPartNumber')\n            if start_part_number is None:\n                break\n\n    # delete/cancel\n    def cancel_large_file(self, file_id):\n        response = self.session.cancel_large_file(file_id)\n        return FileVersionInfoFactory.from_cancel_large_file_response(response)\n\n    def delete_file_version(self, file_id, file_name):\n        # filename argument is not first, because one day it may become optional\n        response = self.session.delete_file_version(file_id, file_name)\n        assert response['fileId'] == file_id\n        assert response['fileName'] == file_name\n        return FileIdAndName(file_id, file_name)\n\n    # download\n    def get_download_url_for_fileid(self, file_id):\n        url = url_for_api(self.account_info, 'b2_download_file_by_id')\n        return '%s?fileId=%s' % (url, file_id)\n\n    def get_download_url_for_file_name(self, bucket_name, file_name):\n        \"\"\"\n        Returns a URL to download the given file by name.\n        \"\"\"\n        self.check_bucket_restrictions(bucket_name)\n        return '%s/file/%s/%s' % (\n            self.account_info.get_download_url(), bucket_name, b2_url_encode(file_name)\n        )\n\n    # keys\n    def create_key(\n        self, capabilities, key_name, valid_duration_seconds=None, bucket_id=None, name_prefix=None\n    ):\n        account_id = self.account_info.get_account_id()\n\n        response = self.session.create_key(\n            account_id,\n            capabilities=capabilities,\n            key_name=key_name,\n            valid_duration_seconds=valid_duration_seconds,\n            bucket_id=bucket_id,\n            name_prefix=name_prefix\n        )\n\n        assert set(response['capabilities']) == set(capabilities)\n        assert response['keyName'] == key_name\n\n        return response\n\n    def delete_key(self, application_key_id):\n\n        response = self.session.delete_key(application_key_id=application_key_id)\n        return response\n\n    def list_keys(self, start_application_key_id=None):\n        account_id = self.account_info.get_account_id()\n",
  "start_line": 200,
  "end_line": 349,
  "total_lines": 372,
  "is_truncated": true
}
Generated tokens 129 tokens · stopped: STOP
Okay, `b2/api.py` line 206 is where `get_bucket_by_name` is defined. Let's read `b2/api.py` around that area and also `list_buckets` and `check_bucket_restrictions`. The traceback said `list_buckets` starts at line 251 and `check_bucket_restrictions` at line 375. <channel|><|tool_call>call:read_file{end_line:400,filepath:<|"|>b2/api.py<|"|>,start_line:200}<tool_call|><|tool_response>
Turn 3at 53 s67 tokens out7,882 prompt tokens
Wait, I missed reading `check_bucket_restrictions`. The `read_file` only went up to line 349.
TOOL CALL · read_file
{
  "end_line": 400,
  "filepath": "b2/api.py",
  "start_line\"": 350
}
Result of read_file 5,966 characters
{
  "status": "ok",
  "filepath": "b2/api.py",
  "content": "######################################################################\n#\n# File: b2/api.py\n#\n# Copyright 2018 Backblaze Inc. All Rights Reserved.\n#\n# License https://www.backblaze.com/using_b2_code.html\n#\n######################################################################\n\nimport six\n\nfrom .account_info.sqlite_account_info import SqliteAccountInfo\nfrom .account_info.exception import MissingAccountData\nfrom .b2http import B2Http\nfrom .bucket import Bucket, BucketFactory\nfrom .cache import AuthInfoCache, DummyCache\nfrom .transferer import Transferer\nfrom .exception import NonExistentBucket, RestrictedBucket\nfrom .file_version import FileVersionInfoFactory, FileIdAndName\nfrom .part import PartFactory\nfrom .raw_api import B2RawApi\nfrom .session import B2Session\nfrom .utils import B2TraceMeta, b2_url_encode, limit_trace_arguments\n\ntry:\n    import concurrent.futures as futures\nexcept ImportError:\n    import futures\n\n\ndef url_for_api(info, api_name):\n    if api_name in ['b2_download_file_by_id']:\n        base = info.get_download_url()\n    else:\n        base = info.get_api_url()\n    return base + '/b2api/v1/' + api_name\n\n\n@six.add_metaclass(B2TraceMeta)\nclass B2Api(object):\n    \"\"\"\n    Provides file-level access to B2 services.\n\n    While B2RawApi provides direct access to the B2 web APIs, this\n    class handles several things that simplify the task of uploading\n    and downloading files:\n      - re-acquires authorization tokens when they expire\n      - retrying uploads when an upload URL is busy\n      - breaking large files into parts\n      - emulating a directory structure (B2 buckets are flat)\n\n    Adds an object-oriented layer on top of the raw API, so that\n    buckets and files returned are Python objects with accessor\n    methods.\n\n    Also,  keeps a cache of information needed to access the service,\n    such as auth tokens and upload URLs.\n    \"\"\"\n\n    def __init__(self, account_info=None, cache=None, raw_api=None, max_upload_workers=10):\n        \"\"\"\n        Initializes the API using the given account info.\n        :param account_info:\n        :param cache:\n        :param raw_api:\n        :return:\n        \"\"\"\n        self.raw_api = raw_api or B2RawApi(B2Http())\n        if account_info is None:\n            account_info = SqliteAccountInfo()\n            if cache is None:\n                cache = AuthInfoCache(account_info)\n        self.session = B2Session(self, self.raw_api)\n        self.transferer = Transferer(self.session, account_info)\n        self.account_info = account_info\n        if cache is None:\n            cache = DummyCache()\n        self.cache = cache\n        self.upload_executor = None\n        self.max_workers = max_upload_workers\n\n    def set_thread_pool_size(self, max_workers):\n        \"\"\"\n        Sets the size of the thread pool to use for uploads and downloads.\n\n        Must be called before any work starts, or the thread pool will get\n        the default size of 1.\n        \"\"\"\n        if self.upload_executor is not None:\n            raise Exception('thread pool already created')\n        self.max_workers = max_workers\n\n    def get_thread_pool(self):\n        \"\"\"\n        Returns the thread pool executor to use for uploads and downloads.\n        \"\"\"\n        if self.upload_executor is None:\n            self.upload_executor = futures.ThreadPoolExecutor(max_workers=self.max_workers)\n        return self.upload_executor\n\n    def authorize_automatically(self):\n        try:\n            self.authorize_account(\n                self.account_info.get_realm(),\n                self.account_info.get_account_id(),\n                self.account_info.get_application_key(),\n            )\n        except MissingAccountData:\n            return False\n        return True\n\n    @limit_trace_arguments(only=('self', 'realm'))\n    def authorize_account(self, realm, account_id_or_key_id, application_key):\n        # Clean up any previous account info if it was for a different account.\n        try:\n            old_account_id = self.account_info.get_account_id()\n            old_realm = self.account_info.get_realm()\n            if account_id_or_key_id != old_account_id or realm != old_realm:\n                self.cache.clear()\n        except MissingAccountData:\n            self.cache.clear()\n\n        # Authorize\n        realm_url = self.account_info.REALM_URLS[realm]\n        response = self.raw_api.authorize_account(realm_url, account_id_or_key_id, application_key)\n        allowed = response['allowed']\n\n        # If there is a bucket restriction, get the name of the bucket.\n        # And, if we have a list of the one allowed bucket, go ahead and\n        # save it.\n        if 'listBuckets' in allowed['capabilities']:\n            if allowed['bucketId'] is not None:\n                allowed_bucket_response = self.raw_api.list_buckets(\n                    api_url=response['apiUrl'],\n                    account_auth_token=response['authorizationToken'],\n                    account_id=response['accountId'],\n                    bucket_id=allowed['bucketId'],\n                )\n                allowed_bucket_list = allowed_bucket_response['buckets']\n                allowed_bucket_count = len(allowed_bucket_list)\n                assert allowed_bucket_count in [0, 1]\n                if allowed_bucket_count == 0:\n                    # bucket has been deleted since the key was made\n                    allowed['bucketName'] = None\n                else:\n                    allowed['bucketName'] = allowed_bucket_list[0]['bucketName']\n                    self.cache.set_bucket_name_cache(\n                        BucketFactory.from_api_response(self, allowed_bucket_response)\n                    )",
  "start_line": 1,
  "end_line": 150,
  "total_lines": 372,
  "is_truncated": true
}
Generated tokens 67 tokens · stopped: STOP
Wait, I missed reading `check_bucket_restrictions`. The `read_file` only went up to line 349. <channel|><|tool_call>call:read_file{end_line:400,filepath:<|"|>b2/api.py<|"|>,start_line": 350}<tool_call|><|tool_response>
Turn 4at 75 s280 tokens out9,580 prompt tokens
Wait, I called `read_file` on `b2/api.py` from line 350 to 400, but it returned lines 1 to 150 because of some reason? Ah, I see. I might have made a mistake or the tool didn't follow. Let me check the `read_file` call and response again.

My call was:
`read_file(end_line=400, filepath="b2/api.py", start_line=350)`
But the response showed `start_line: 1` and `end_line: 150`. That's weird.

Let me try again, and I'll be more careful. I want to see `check_bucket_restrictions` in `b2/api.py`. The previous `grep` didn't show it, but the traceback said it's on line 375 (which was for the version the user had). In my version, let's see where it is.

I'll search for `def check_bucket_restrictions` in `b2/api.py`.
TOOL CALL · run_command
{
  "command": "grep -n \"def check_bucket_restrictions\" b2/api.py"
}
Result of run_command 119 characters
{
  "status": "ok",
  "stdout": "359:    def check_bucket_restrictions(self, bucket_name):\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 280 tokens · stopped: STOP
Wait, I called `read_file` on `b2/api.py` from line 350 to 400, but it returned lines 1 to 150 because of some reason? Ah, I see. I might have made a mistake or the tool didn't follow. Let me check the `read_file` call and response again. My call was: `read_file(end_line=400, filepath="b2/api.py", start_line=350)` But the response showed `start_line: 1` and `end_line: 150`. That's weird. Let me try again, and I'll be more careful. I want to see `check_bucket_restrictions` in `b2/api.py`. The previous `grep` didn't show it, but the traceback said it's on line 375 (which was for the version the user had). In my version, let's see where it is. I'll search for `def check_bucket_restrictions` in `b2/api.py`. <channel|><|tool_call>call:run_command{command:<|"|>grep -n "def check_bucket_restrictions" b2/api.py<|"|>}<tool_call|><|tool_response>
Turn 5at 78 s65 tokens out9,917 prompt tokens
Okay, it's on line 359. Let me read from line 350 to 400.
TOOL CALL · read_file
{
  "end_line": 400,
  "filepath": "b2/api.py",
  "start_line": 350
}
Result of read_file 1,056 characters
{
  "status": "ok",
  "filepath": "b2/api.py",
  "content": "        return self.session.list_keys(\n            account_id, max_key_count=1000, start_application_key_id=start_application_key_id\n        )\n\n    # other\n    def get_file_info(self, file_id):\n        \"\"\" legacy interface which just returns whatever remote API returns \"\"\"\n        return self.session.get_file_info(file_id)\n\n    def check_bucket_restrictions(self, bucket_name):\n        \"\"\"\n        Checks to see if the allowed field from authorize-account\n        has a bucket restriction.\n\n        If it does, does the bucket_name for a given api call match that.\n        If not it raises a RestrictedBucket error.\n        \"\"\"\n        allowed = self.account_info.get_allowed()\n        allowed_bucket_name = allowed['bucketName']\n\n        if allowed_bucket_name is not None:\n            if allowed_bucket_name != bucket_name:\n                raise RestrictedBucket(allowed_bucket_name)",
  "start_line": 350,
  "end_line": 372,
  "total_lines": 372,
  "is_truncated": false
}
Generated tokens 65 tokens · stopped: STOP
Okay, it's on line 359. Let me read from line 350 to 400. <channel|><|tool_call>call:read_file{end_line:400,filepath:<|"|>b2/api.py<|"|>,start_line:350}<tool_call|><|tool_response>
Turn 6at 158 s1,533 tokens out10,304 prompt tokens
Okay, so `check_bucket_restrictions` does:
```python
    def check_bucket_restrictions(self, bucket_name):
        # ...
        allowed = self.account_info.get_allowed()
        allowed_bucket_name = allowed['bucketName']

        if allowed_bucket_name is not None:
            if allowed_bucket_name != bucket_name:
                raise RestrictedBucket(allowed_bucket_name)
```

Now let's look at `get_bucket_by_name` again:
```python
    def get_bucket_by_name(self, bucket_name):
        # ...
        # If we can get it from the stored info, do that.
        self.check_bucket_restrictions(bucket_name)
        id_ = self.cache.get_bucket_id_or_none_from_bucket_name(bucket_name)
        if id_ is not None:
            return Bucket(self, id_, name=bucket_name)

        for bucket in self.list_buckets():
            if bucket.name == bucket_name:
                return bucket
        raise NonExistentBucket(bucket_name)
```

And `list_buckets`:
```python
    def list_buckets(self, bucket_name=None):
        # ...
        account_id = self.account_info.get_account_id()
        self.check_bucket_restrictions(bucket_name)
        # ...
        # ...
        response = self.session.list_buckets(account_id, bucket_id=bucket_id)
        # ...
```

If `get_bucket_by_name(bucket_name)` is called:
1. It calls `self.check_bucket_restrictions(bucket_name)`. This is fine because `bucket_name` is provided.
2. If not in cache, it calls `self.list_buckets()`.
3. `list_buckets()` is called WITHOUT arguments. So `bucket_name` in `list_buckets` is `None`.
4. `list_buckets()` calls `self.check_bucket_restrictions(None)`.
5. If there's a bucket restriction (`allowed_bucket_name` is not `None`), and `bucket_name` is `None`, then `allowed_bucket_name != None` is true, and it raises `RestrictedBucket`.

This is exactly what the issue describes.

To fix this, `get_bucket_by_name` should call `self.list_buckets(bucket_name)`.

Let's double check `list_buckets` implementation of `bucket_name`:
```python
    def list_buckets(self, bucket_name=None):
        # ...
        account_id = self.account_info.get_account_id()
        self.check_bucket_restrictions(bucket_name)

        if bucket_name is None:
            bucket_id = None
        else:
            allowed = self.account_info.get_allowed()
            if allowed['bucketId'] is not None:
                bucket_id = allowed['bucketId']
            else:
                bucket_id = self.get_bucket_by_name(bucket_name).id_

        response = self.session.list_buckets(account_id, bucket_id=bucket_id)
        # ...
```

Wait, if I change `get_bucket_by_name` to call `self.list_buckets(bucket_name)`, then `list_buckets` might call `self.get_bucket_by_name(bucket_name).id_` if `allowed['bucketId']` is `None`.

Wait, let's look at `list_buckets` again:
```python
        if bucket_name is None:
            bucket_id = None
        else:
            allowed = self.account_info.get_allowed()
            if allowed['bucketId'] is not None:
                bucket_id = allowed['bucketId']
            else:
                bucket_id = self.get_bucket_by_name(bucket_name).id_
```

If `get_bucket_by_name` calls `list_buckets(bucket_name)`, and `allowed['bucketId']` is `None`, then `list_buckets` calls `get_bucket_by_name`, which calls `list_buckets`... INFINITE RECURSION!

Wait, why is `list_buckets` implemented this way?
The comment says:
```python
        # TEMPORARY work around until we fix the API endpoint bug that things requests
        # with a bucket name are not authorized.  When it's fixed, well just pass the
        # bucket name (or None) to the raw API.
```

So `list_buckets` tries to find the `bucket_id` if `bucket_name` is provided.

If `get_bucket_by_name(bucket_name)` is called, we already have the `bucket_name`. We want the `Bucket` object (which has the `id_`).

If I change:
```python
        for bucket in self.list_buckets():
            if bucket.name == bucket_name:
                return bucket
```
to:
```python
        for bucket in self.list_buckets(bucket_name):
            if bucket.name == bucket_name:
                return bucket
```
And `allowed['bucketId']` is `None`, then `list_buckets(bucket_name)` calls `self.get_bucket_by_name(bucket_name).id_`.
And `get_bucket_by_name` calls `list_buckets(bucket_name)`.
Recursion!

So I need to be careful.

What is the purpose of `list_buckets(bucket_name)`?
If `bucket_name` is provided, it returns just that bucket.
If `bucket_name` is NOT provided, it returns all buckets.

In `get_bucket_by_name`, we only care about the bucket with the given name.

If the application key is restricted to one bucket, `list_buckets()` (with no args) fails.
But `list_buckets(bucket_name)` should work if `bucket_name` is the restricted bucket.

If `allowed['bucketId']` is present, `list_buckets(bucket_name)` uses it to call the API.
If `allowed['bucketId']` is NOT present, but the key is restricted to a bucket by name? No, usually if it's restricted to a bucket, `bucketId` is present in the `allowed` info.

Let's check `authorize_account` in `b2/api.py`.
TOOL CALL · read_file
{
  "end_line": 150,
  "filepath": "b2/api.py",
  "start_line": 1
}
Result of read_file 5,967 characters
{
  "status": "ok",
  "filepath": "b2/api.py",
  "content": "######################################################################\n#\n# File: b2/api.py\n#\n# Copyright 2018 Backblaze Inc. All Rights Reserved.\n#\n# License https://www.backblaze.com/using_b2_code.html\n#\n######################################################################\n\nimport six\n\nfrom .account_info.sqlite_account_info import SqliteAccountInfo\nfrom .account_info.exception import MissingAccountData\nfrom .b2http import B2Http\nfrom .bucket import Bucket, BucketFactory\nfrom .cache import AuthInfoCache, DummyCache\nfrom .transferer import Transferer\nfrom .exception import NonExistentBucket, RestrictedBucket\nfrom .file_version import FileVersionInfoFactory, FileIdAndName\nfrom .part import PartFactory\nfrom .raw_api import B2RawApi\nfrom .session import B2Session\nfrom .utils import B2TraceMeta, b2_url_encode, limit_trace_arguments\n\ntry:\n    import concurrent.futures as futures\nexcept ImportError:\n    import futures\n\n\ndef url_for_api(info, api_name):\n    if api_name in ['b2_download_file_by_id']:\n        base = info.get_download_url()\n    else:\n        base = info.get_api_url()\n    return base + '/b2api/v1/' + api_name\n\n\n@six.add_metaclass(B2TraceMeta)\nclass B2Api(object):\n    \"\"\"\n    Provides file-level access to B2 services.\n\n    While B2RawApi provides direct access to the B2 web APIs, this\n    class handles several things that simplify the task of uploading\n    and downloading files:\n      - re-acquires authorization tokens when they expire\n      - retrying uploads when an upload URL is busy\n      - breaking large files into parts\n      - emulating a directory structure (B2 buckets are flat)\n\n    Adds an object-oriented layer on top of the raw API, so that\n    buckets and files returned are Python objects with accessor\n    methods.\n\n    Also,  keeps a cache of information needed to access the service,\n    such as auth tokens and upload URLs.\n    \"\"\"\n\n    def __init__(self, account_info=None, cache=None, raw_api=None, max_upload_workers=10):\n        \"\"\"\n        Initializes the API using the given account info.\n        :param account_info:\n        :param cache:\n        :param raw_api:\n        :return:\n        \"\"\"\n        self.raw_api = raw_api or B2RawApi(B2Http())\n        if account_info is None:\n            account_info = SqliteAccountInfo()\n            if cache is None:\n                cache = AuthInfoCache(account_info)\n        self.session = B2Session(self, self.raw_api)\n        self.transferer = Transferer(self.session, account_info)\n        self.account_info = account_info\n        if cache is None:\n            cache = DummyCache()\n        self.cache = cache\n        self.upload_executor = None\n        self.max_workers = max_upload_workers\n\n    def set_thread_pool_size(self, max_workers):\n        \"\"\"\n        Sets the size of the thread pool to use for uploads and downloads.\n\n        Must be called before any work starts, or the thread pool will get\n        the default size of 1.\n        \"\"\"\n        if self.upload_executor is not None:\n            raise Exception('thread pool already created')\n        self.max_workers = max_workers\n\n    def get_thread_pool(self):\n        \"\"\"\n        Returns the thread pool executor to use for uploads and downloads.\n        \"\"\"\n        if self.upload_executor is None:\n            self.upload_executor = futures.ThreadPoolExecutor(max_workers=self.max_workers)\n        return self.upload_executor\n\n    def authorize_automatically(self):\n        try:\n            self.authorize_account(\n                self.account_info.get_realm(),\n                self.account_info.get_account_id(),\n                self.account_info.get_application_key(),\n            )\n        except MissingAccountData:\n            return False\n        return True\n\n    @limit_trace_arguments(only=('self', 'realm'))\n    def authorize_account(self, realm, account_id_or_key_id, application_key):\n        # Clean up any previous account info if it was for a different account.\n        try:\n            old_account_id = self.account_info.get_account_id()\n            old_realm = self.account_info.get_realm()\n            if account_id_or_key_id != old_account_id or realm != old_realm:\n                self.cache.clear()\n        except MissingAccountData:\n            self.cache.clear()\n\n        # Authorize\n        realm_url = self.account_info.REALM_URLS[realm]\n        response = self.raw_api.authorize_account(realm_url, account_id_or_key_id, application_key)\n        allowed = response['allowed']\n\n        # If there is a bucket restriction, get the name of the bucket.\n        # And, if we have a list of the one allowed bucket, go ahead and\n        # save it.\n        if 'listBuckets' in allowed['capabilities']:\n            if allowed['bucketId'] is not None:\n                allowed_bucket_response = self.raw_api.list_buckets(\n                    api_url=response['apiUrl'],\n                    account_auth_token=response['authorizationToken'],\n                    account_id=response['accountId'],\n                    bucket_id=allowed['bucketId'],\n                )\n                allowed_bucket_list = allowed_bucket_response['buckets']\n                allowed_bucket_count = len(allowed_bucket_list)\n                assert allowed_bucket_count in [0, 1]\n                if allowed_bucket_count == 0:\n                    # bucket has been deleted since the key was made\n                    allowed['bucketName'] = None\n                else:\n                    allowed['bucketName'] = allowed_bucket_list[0]['bucketName']\n                    self.cache.set_bucket_name_cache(\n                        BucketFactory.from_api_response(self, allowed_bucket_response)\n                    )",
  "start_line": 1,
  "end_line": 150,
  "total_lines": 372,
  "is_truncated": false
}
Generated tokens 1,533 tokens · stopped: STOP
Okay, so `check_bucket_restrictions` does: ```python def check_bucket_restrictions(self, bucket_name): # ... allowed = self.account_info.get_allowed() allowed_bucket_name = allowed['bucketName'] if allowed_bucket_name is not None: if allowed_bucket_name != bucket_name: raise RestrictedBucket(allowed_bucket_name) ``` Now let's look at `get_bucket_by_name` again: ```python def get_bucket_by_name(self, bucket_name): # ... # If we can get it from the stored info, do that. self.check_bucket_restrictions(bucket_name) id_ = self.cache.get_bucket_id_or_none_from_bucket_name(bucket_name) if id_ is not None: return Bucket(self, id_, name=bucket_name) for bucket in self.list_buckets(): if bucket.name == bucket_name: return bucket raise NonExistentBucket(bucket_name) ``` And `list_buckets`: ```python def list_buckets(self, bucket_name=None): # ... account_id = self.account_info.get_account_id() self.check_bucket_restrictions(bucket_name) # ... # ... response = self.session.list_buckets(account_id, bucket_id=bucket_id) # ... ``` If `get_bucket_by_name(bucket_name)` is called: 1. It calls `self.check_bucket_restrictions(bucket_name)`. This is fine because `bucket_name` is provided. 2. If not in cache, it calls `self.list_buckets()`. 3. `list_buckets()` is called WITHOUT arguments. So `bucket_name` in `list_buckets` is `None`. 4. `list_buckets()` calls `self.check_bucket_restrictions(None)`. 5. If there's a bucket restriction (`allowed_bucket_name` is not `None`), and `bucket_name` is `None`, then `allowed_bucket_name != None` is true, and it raises `RestrictedBucket`. This is exactly what the issue describes. To fix this, `get_bucket_by_name` should call `self.list_buckets(bucket_name)`. Let's double check `list_buckets` implementation of `bucket_name`: ```python def list_buckets(self, bucket_name=None): # ... account_id = self.account_info.get_account_id() self.check_bucket_restrictions(bucket_name) if bucket_name is None: bucket_id = None else: allowed = self.account_info.get_allowed() if allowed['bucketId'] is not None: bucket_id = allowed['bucketId'] else: bucket_id = self.get_bucket_by_name(bucket_name).id_ response = self.session.list_buckets(account_id, bucket_id=bucket_id) # ... ``` Wait, if I change `get_bucket_by_name` to call `self.list_buckets(bucket_name)`, then `list_buckets` might call `self.get_bucket_by_name(bucket_name).id_` if `allowed['bucketId']` is `None`. Wait, let's look at `list_buckets` again: ```python if bucket_name is None: bucket_id = None else: allowed = self.account_info.get_allowed() if allowed['bucketId'] is not None: bucket_id = allowed['bucketId'] else: bucket_id = self.get_bucket_by_name(bucket_name).id_ ``` If `get_bucket_by_name` calls `list_buckets(bucket_name)`, and `allowed['bucketId']` is `None`, then `list_buckets` calls `get_bucket_by_name`, which calls `list_buckets`... INFINITE RECURSION! Wait, why is `list_buckets` implemented this way? The comment says: ```python # TEMPORARY work around until we fix the API endpoint bug that things requests # with a bucket name are not authorized. When it's fixed, well just pass the # bucket name (or None) to the raw API. ``` So `list_buckets` tries to find the `bucket_id` if `bucket_name` is provided. If `get_bucket_by_name(bucket_name)` is called, we already have the `bucket_name`. We want the `Bucket` object (which has the `id_`). If I change: ```python for bucket in self.list_buckets(): if bucket.name == bucket_name: return bucket ``` to: ```python for bucket in self.list_buckets(bucket_name): if bucket.name == bucket_name: return bucket ``` And `allowed['bucketId']` is `None`, then `list_buckets(bucket_name)` calls `self.get_bucket_by_name(bucket_name).id_`. And `get_bucket_by_name` calls `list_buckets(bucket_name)`. Recursion! So I need to be careful. What is the purpose of `list_buckets(bucket_name)`? If `bucket_name` is provided, it returns just that bucket. If `bucket_name` is NOT provided, it returns all buckets. In `get_bucket_by_name`, we only care about the bucket with the given name. If the application key is restricted to one bucket, `list_buckets()` (with no args) fails. But `list_buckets(bucket_name)` should work if `bucket_name` is the restricted bucket. If `allowed['bucketId']` is present, `list_buckets(bucket_name)` uses it to call the API. If `allowed['bucketId']` is NOT present, but the key is restricted to a bucket by name? No, usually if it's restricted to a bucket, `bucketId` is present in the `allowed` info. Let's check `authorize_account` in `b2/api.py`. <channel|><|tool_call>call:read_file{end_line:150,filepath:<|"|>b2/api.py<|"|>,start_line:1}<tool_call|><|tool_response>
Turn 7at 284 s2,275 tokens out13,469 prompt tokens
Wait, the `authorize_account` method does this:
```python
        if 'listBuckets' in allowed['capabilities']:
            if allowed['bucketId'] is not None:
                allowed_bucket_response = self.raw_api.list_buckets(
                    api_url=response['apiUrl'],
                    account_auth_token=response['authorizationToken'],
                    account_id=response['accountId'],
                    bucket_id=allowed['bucketId'],
                )
                # ...
                allowed['bucketName'] = allowed_bucket_list[0]['bucketName']
                self.cache.set_bucket_name_cache(
                    BucketFactory.from_api_response(self, allowed_bucket_response)
                )
```

So if `allowed['bucketId']` is present, it already populates the cache for that bucket.

Back to `get_bucket_by_name`:
```python
    def get_bucket_by_name(self, bucket_name):
        # ...
        # If we can get it from the stored info, do that.
        self.check_bucket_restrictions(bucket_name)
        id_ = self.cache.get_bucket_id_or_none_from_bucket_name(bucket_name)
        if id_ is not None:
            return Bucket(self, id_, name=bucket_name)

        for bucket in self.list_buckets():
            if bucket.name == bucket_name:
                return bucket
        raise NonExistentBucket(bucket_name)
```

If the key is restricted to one bucket, `allowed['bucketId']` should be present.
And `authorize_account` should have called `self.cache.set_bucket_name_cache(...)`.
So `self.cache.get_bucket_id_or_none_from_bucket_name(bucket_name)` should return the `bucket_id`.

Wait, if it's in the cache, it should already return!

Why would it reach `for bucket in self.list_buckets():`?

The only case where it wouldn't be in the cache:
1. `authorize_account` was not called yet (but it's usually called before any API call).
2. `cache.clear()` was called.
3. Something is wrong with the cache implementation.
4. `allowed['bucketId']` was `None` but a restriction exists? No, that doesn't make sense.

Wait, let's look at `list_buckets` again.
```python
    def list_buckets(self, bucket_name=None):
        # ...
        account_id = self.account_info.get_account_id()
        self.check_bucket_restrictions(bucket_name)

        if bucket_name is None:
            bucket_id = None
        else:
            allowed = self.account_info.get_allowed()
            if allowed['bucketId'] is not None:
                bucket_id = allowed['bucketId']
            else:
                bucket_id = self.get_bucket_by_name(bucket_name).id_

        response = self.session.list_buckets(account_id, bucket_id=bucket_id)
        # ...
```

If we call `get_bucket_by_name(bucket_name)` and it's not in cache, it calls `list_buckets()`.
Then `list_buckets` calls `check_bucket_restrictions(None)`.
And if `allowed['bucketName']` is not `None`, it raises `RestrictedBucket`.

If we instead call `list_buckets(bucket_name)`, then `check_bucket_restrictions(bucket_name)` will pass.
And then `bucket_id` will be `allowed['bucketId']` (if it exists), and `self.session.list_buckets(account_id, bucket_id=bucket_id)` will be called, which should work for a restricted key.

Now about the recursion:
`get_bucket_by_name(bucket_name)` -> `list_buckets(bucket_name)` -> `get_bucket_by_name(bucket_name).id_` (if `allowed['bucketId']` is `None`).
Wait, if `allowed['bucketId']` is `None`, then `allowed['bucketName']` is also likely `None`?

Let's check `authorize_account` again.
```python
        if 'listBuckets' in allowed['capabilities']:
            if allowed['bucketId'] is not None:
                # ...
                allowed['bucketName'] = allowed_bucket_list[0]['bucketName']
                self.cache.set_bucket_name_cache(
                    BucketFactory.from_api_response(self, allowed_bucket_response)
                )
```

If `allowed['bucketId']` is `None`, `allowed['bucketName']` is not set.
Wait, if `allowed['bucketId']` is `None`, it means there's no bucket restriction (or at least not one specified by `bucketId`).

If there's NO bucket restriction, then `allowed['bucketName']` will be `None`.
Then `check_bucket_restrictions(None)` will NOT raise `RestrictedBucket`.
And `list_buckets()` will work fine.

So the only problem is when `allowed['bucketName']` IS NOT `None` (meaning there is a restriction), but `get_bucket_by_name` calls `list_buckets()` without the bucket name.

If there is a restriction, then `allowed['bucketId']` SHOULD be not `None` (because that's how B2 restriction works).

So if we change `get_bucket_by_name` to call `list_buckets(bucket_name)`, then:
1. `check_bucket_restrictions(bucket_name)` passes.
2. `allowed['bucketId']` will be not `None`.
3. `bucket_id = allowed['bucketId']`.
4. `self.session.list_buckets(account_id, bucket_id=bucket_id)` is called.
5. No recursion.

Wait, what if `allowed['bucketId']` is `None` but `allowed['bucketName']` is NOT `None`?
Is that possible?
Looking at `authorize_account`, `allowed['bucketName']` is only set if `allowed['bucketId']` is not `None`.

But `allowed` is returned from `self.raw_api.authorize_account`.
Wait, let's look at where `allowed` comes from.
`response = self.raw_api.authorize_account(...)`
`allowed = response['allowed']`

Does `response['allowed']` already contain `bucketName`?
The code does:
```python
        if 'listBuckets' in allowed['capabilities']:
            if allowed['bucketId'] is not None:
                # ...
                allowed['bucketName'] = allowed_bucket_list[0]['bucketName']
```

So `allowed['bucketName']` is added by the SDK.

If `allowed['bucketId']` is `None`, then `allowed['bucketName']` is NOT set by this code.
But what if it was already there?
Probably not.

So if `allowed['bucketName']` is not `None`, it MUST be that `allowed['bucketId']` was not `None`.

Thus, changing `self.list_buckets()` to `self.list_buckets(bucket_name)` in `get_bucket_by_name` should solve the problem without causing infinite recursion.

Let's verify the recursion path:
`get_bucket_by_name(bucket_name)` -> `list_buckets(bucket_name)`
In `list_buckets(bucket_name)`:
```python
        if bucket_name is None:
            bucket_id = None
        else:
            allowed = self.account_info.get_allowed()
            if allowed['bucketId'] is not None:
                bucket_id = allowed['bucketId']
            else:
                bucket_id = self.get_bucket_by_name(bucket_name).id_
```
If `allowed['bucketId']` is `None`, it calls `get_bucket_by_name(bucket_name).id_`.
Recursion!

But if `allowed['bucketId']` is `None`, was `allowed['bucketName']` set?
In `authorize_account`, it's only set if `allowed['bucketId']` is not `None`.

Wait, what if `allowed['bucket//something']` is set by B2 API?
Let's check if `allowed` from B2 API already has `bucketName`.
Commonly, B2 API `authorize_account` returns `allowed` which contains `capabilities` and `bucketId`. It doesn't return `bucketName`.

So, if `allowed['bucketId']` is `None`, then `allowed['bucketName']` is also `None` (unless it's somehow set elsewhere).

If both are `None`, then `check_bucket_restrictions(None)` will pass, and `list_buckets()` will work.

So the issue is specifically when `allowed['bucketId']` is NOT `None`. In that case, `get_bucket_by_name(bucket_name)` -> `list_buckets(bucket_name)` -> `bucket_id = allowed['bucketId']` -> API call. No recursion.

One more thing: `get_bucket_by_name` already calls `self.check_bucket_restrictions(bucket_name)` at the beginning.
And `list_buckets(bucket_name)` also calls `self.check_bucket_restrictions(bucket_name)`.
That's redundant but harmless.

Let's try to reproduce this with a test case.
I'll create a test case that mocks the B2 account info to have a bucket restriction.

I'll look at `test/test_api.py` to see if there are similar tests.
TOOL CALL · run_command
{
  "command": "grep -rn \"RestrictedBucket\" test/"
}
Result of run_command 265 characters
{
  "status": "ok",
  "stdout": "test/test_api.py:15:from b2.exception import RestrictedBucket\ntest/test_api.py:62:        with self.assertRaises(RestrictedBucket):\ntest/test_api.py:71:        with self.assertRaises(RestrictedBucket):\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 2,275 tokens · stopped: STOP
Wait, the `authorize_account` method does this: ```python if 'listBuckets' in allowed['capabilities']: if allowed['bucketId'] is not None: allowed_bucket_response = self.raw_api.list_buckets( api_url=response['apiUrl'], account_auth_token=response['authorizationToken'], account_id=response['accountId'], bucket_id=allowed['bucketId'], ) # ... allowed['bucketName'] = allowed_bucket_list[0]['bucketName'] self.cache.set_bucket_name_cache( BucketFactory.from_api_response(self, allowed_bucket_response) ) ``` So if `allowed['bucketId']` is present, it already populates the cache for that bucket. Back to `get_bucket_by_name`: ```python def get_bucket_by_name(self, bucket_name): # ... # If we can get it from the stored info, do that. self.check_bucket_restrictions(bucket_name) id_ = self.cache.get_bucket_id_or_none_from_bucket_name(bucket_name) if id_ is not None: return Bucket(self, id_, name=bucket_name) for bucket in self.list_buckets(): if bucket.name == bucket_name: return bucket raise NonExistentBucket(bucket_name) ``` If the key is restricted to one bucket, `allowed['bucketId']` should be present. And `authorize_account` should have called `self.cache.set_bucket_name_cache(...)`. So `self.cache.get_bucket_id_or_none_from_bucket_name(bucket_name)` should return the `bucket_id`. Wait, if it's in the cache, it should already return! Why would it reach `for bucket in self.list_buckets():`? The only case where it wouldn't be in the cache: 1. `authorize_account` was not called yet (but it's usually called before any API call). 2. `cache.clear()` was called. 3. Something is wrong with the cache implementation. 4. `allowed['bucketId']` was `None` but a restriction exists? No, that doesn't make sense. Wait, let's look at `list_buckets` again. ```python def list_buckets(self, bucket_name=None): # ... account_id = self.account_info.get_account_id() self.check_bucket_restrictions(bucket_name) if bucket_name is None: bucket_id = None else: allowed = self.account_info.get_allowed() if allowed['bucketId'] is not None: bucket_id = allowed['bucketId'] else: bucket_id = self.get_bucket_by_name(bucket_name).id_ response = self.session.list_buckets(account_id, bucket_id=bucket_id) # ... ``` If we call `get_bucket_by_name(bucket_name)` and it's not in cache, it calls `list_buckets()`. Then `list_buckets` calls `check_bucket_restrictions(None)`. And if `allowed['bucketName']` is not `None`, it raises `RestrictedBucket`. If we instead call `list_buckets(bucket_name)`, then `check_bucket_restrictions(bucket_name)` will pass. And then `bucket_id` will be `allowed['bucketId']` (if it exists), and `self.session.list_buckets(account_id, bucket_id=bucket_id)` will be called, which should work for a restricted key. Now about the recursion: `get_bucket_by_name(bucket_name)` -> `list_buckets(bucket_name)` -> `get_bucket_by_name(bucket_name).id_` (if `allowed['bucketId']` is `None`). Wait, if `allowed['bucketId']` is `None`, then `allowed['bucketName']` is also likely `None`? Let's check `authorize_account` again. ```python if 'listBuckets' in allowed['capabilities']: if allowed['bucketId'] is not None: # ... allowed['bucketName'] = allowed_bucket_list[0]['bucketName'] self.cache.set_bucket_name_cache( BucketFactory.from_api_response(self, allowed_bucket_response) ) ``` If `allowed['bucketId']` is `None`, `allowed['bucketName']` is not set. Wait, if `allowed['bucketId']` is `None`, it means there's no bucket restriction (or at least not one specified by `bucketId`). If there's NO bucket restriction, then `allowed['bucketName']` will be `None`. Then `check_bucket_restrictions(None)` will NOT raise `RestrictedBucket`. And `list_buckets()` will work fine. So the only problem is when `allowed['bucketName']` IS NOT `None` (meaning there is a restriction), but `get_bucket_by_name` calls `list_buckets()` without the bucket name. If there is a restriction, then `allowed['bucketId']` SHOULD be not `None` (because that's how B2 restriction works). So if we change `get_bucket_by_name` to call `list_buckets(bucket_name)`, then: 1. `check_bucket_restrictions(bucket_name)` passes. 2. `allowed['bucketId']` will be not `None`. 3. `bucket_id = allowed['bucketId']`. 4. `self.session.list_buckets(account_id, bucket_id=bucket_id)` is called. 5. No recursion. Wait, what if `allowed['bucketId']` is `None` but `allowed['bucketName']` is NOT `None`? Is that possible? Looking at `authorize_account`, `allowed['bucketName']` is only set if `allowed['bucketId']` is not `None`. But `allowed` is returned from `self.raw_api.authorize_account`. Wait, let's look at where `allowed` comes from. `response = self.raw_api.authorize_account(...)` `allowed = response['allowed']` Does `response['allowed']` already contain `bucketName`? The code does: ```python if 'listBuckets' in allowed['capabilities']: if allowed['bucketId'] is not None: # ... allowed['bucketName'] = allowed_bucket_list[0]['bucketName'] ``` So `allowed['bucketName']` is added by the SDK. If `allowed['bucketId']` is `None`, then `allowed['bucketName']` is NOT set by this code. But what if it was already there? Probably not. So if `allowed['bucketName']` is not `None`, it MUST be that `allowed['bucketId']` was not `None`. Thus, changing `self.list_buckets()` to `self.list_buckets(bucket_name)` in `get_bucket_by_name` should solve the problem without causing infinite recursion. Let's verify the recursion path: `get_bucket_by_name(bucket_name)` -> `list_buckets(bucket_name)` In `list_buckets(bucket_name)`: ```python if bucket_name is None: bucket_id = None else: allowed = self.account_info.get_allowed() if allowed['bucketId'] is not None: bucket_id = allowed['bucketId'] else: bucket_id = self.get_bucket_by_name(bucket_name).id_ ``` If `allowed['bucketId']` is `None`, it calls `get_bucket_by_name(bucket_name).id_`. Recursion! But if `allowed['bucketId']` is `None`, was `allowed['bucketName']` set? In `authorize_account`, it's only set if `allowed['bucketId']` is not `None`. Wait, what if `allowed['bucket//something']` is set by B2 API? Let's check if `allowed` from B2 API already has `bucketName`. Commonly, B2 API `authorize_account` returns `allowed` which contains `capabilities` and `bucketId`. It doesn't return `bucketName`. So, if `allowed['bucketId']` is `None`, then `allowed['bucketName']` is also `None` (unless it's somehow set elsewhere). If both are `None`, then `check_bucket_restrictions(None)` will pass, and `list_buckets()` will work. So the issue is specifically when `allowed['bucketId']` is NOT `None`. In that case, `get_bucket_by_name(bucket_name)` -> `list_buckets(bucket_name)` -> `bucket_id = allowed['bucketId']` -> API call. No recursion. One more thing: `get_bucket_by_name` already calls `self.check_bucket_restrictions(bucket_name)` at the beginning. And `list_buckets(bucket_name)` also calls `self.check_bucket_restrictions(bucket_name)`. That's redundant but harmless. Let's try to reproduce this with a test case. I'll create a test case that mocks the B2 account info to have a bucket restriction. I'll look at `test/test_api.py` to see if there are similar tests. <channel|><|tool_call>call:run_command{command:<|"|>grep -rn "RestrictedBucket" test/<|"|>}<tool_call|><|tool_response>
Turn 8at 288 s54 tokens out15,847 prompt tokens
Let's read `test/test_api.py` around those lines.
TOOL CALL · read_file
{
  "end_line": 80,
  "filepath": "test/test_api.py",
  "start_line": 50
}
Result of read_file 1,523 characters
{
  "status": "ok",
  "filepath": "test/test_api.py",
  "content": "        self.api.authorize_account('production', key['applicationKeyId'], key['applicationKey'])\n        self.assertEqual(\n            ['bucket1'],\n            [b.name for b in self.api.list_buckets(bucket_name=bucket1.name)],\n        )\n\n    def test_list_buckets_with_restriction_and_wrong_name(self):\n        self._authorize_account()\n        bucket1 = self.api.create_bucket('bucket1', 'allPrivate')\n        bucket2 = self.api.create_bucket('bucket2', 'allPrivate')\n        key = self.api.create_key(['listBuckets'], 'key1', bucket_id=bucket1.id_)\n        self.api.authorize_account('production', key['applicationKeyId'], key['applicationKey'])\n        with self.assertRaises(RestrictedBucket):\n            self.api.list_buckets(bucket_name=bucket2.name)\n\n    def test_list_buckets_with_restriction_and_no_name(self):\n        self._authorize_account()\n        bucket1 = self.api.create_bucket('bucket1', 'allPrivate')\n        self.api.create_bucket('bucket2', 'allPrivate')\n        key = self.api.create_key(['listBuckets'], 'key1', bucket_id=bucket1.id_)\n        self.api.authorize_account('production', key['applicationKeyId'], key['applicationKey'])\n        with self.assertRaises(RestrictedBucket):\n            self.api.list_buckets()\n\n    def _authorize_account(self):\n        self.api.authorize_account('production', self.account_id, self.master_key)",
  "start_line": 50,
  "end_line": 75,
  "total_lines": 75,
  "is_truncated": false
}
Generated tokens 54 tokens · stopped: STOP
Let's read `test/test_api.py` around those lines. <channel|><|tool_call>call:read_file{end_line:80,filepath:<|"|>test/test_api.py<|"|>,start_line:50}<tool_call|><|tool_response>
Turn 9at 335 s95 tokens out8,382 prompt tokens
Okay, `test_list_buckets_with_restriction_and_no_name` confirms that `list_buckets()` raises `RestrictedBucket` when there is a restriction.

But we have `get_bucket_by_name`. Let's see if it's tested.
TOOL CALL · run_command
{
  "command": "grep -rn \"get_bucket_by_name\" test/test_api.py"
}
Result of run_command 127 characters
{
  "status": "error",
  "error_type": "CommandError",
  "error_message": "",
  "details": {
    "stdout": "",
    "stderr": "",
    "exit_code": 1
  }
}
Generated tokens 95 tokens · stopped: STOP
Okay, `test_list_buckets_with_restriction_and_no_name` confirms that `list_buckets()` raises `RestrictedBucket` when there is a restriction. But we have `get_bucket_by_name`. Let's see if it's tested.<channel|><|tool_call>call:run_command{command:<|"|>grep -rn "get_bucket_by_name" test/test_api.py<|"|>}<tool_call|><|tool_response>
Turn 10at 338 s53 tokens out8,533 prompt tokens
It's not in `test/test_api.py`. Let me search for it in other tests.
TOOL CALL · run_command
{
  "command": "grep -rn \"get_bucket_by_name\" test/"
}
Result of run_command 1,052 characters
{
  "status": "ok",
  "stdout": "test/test_console_tool.py:388:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\ntest/test_console_tool.py:395:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\ntest/test_console_tool.py:603:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\ntest/test_console_tool.py:610:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\ntest/test_console_tool.py:794:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\ntest/test_console_tool.py:829:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\ntest/test_console_tool.py:873:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\ntest/test_console_tool.py:913:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\ntest/test_console_tool.py:1070:        bucket = self.b2_api.get_bucket_by_name('my-bucket')\ntest/test_policy.py:69:        api.get_bucket_by_name.return_value = bucket\ntest/test_sync.py:248:        self.api.get_bucket_by_name.return_value = self.bucket\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 53 tokens · stopped: STOP
It's not in `test/test_api.py`. Let me search for it in other tests. <channel|><|tool_call>call:run_command{command:<|"|>grep -rn "get_bucket_by_name" test/<|"|>}<tool_call|><|tool_response>
Turn 11at 391 s847 tokens out9,030 prompt tokens
Most of these are mocks.

I can write a reproduction script.
I'll mock `B2Api` and its dependencies.
Actually, I can just use the real `B2Api` and mock the `account_info` and `cache`.

```python
import unittest
from unittest.mock import MagicMock, patch
from b2.api import B2Api
from b2.exception import RestrictedBucket

class TestB2Api(unittest.TestCase):
    def test_get_bucket_by_name_restricted(self):
        api = B2Api()
        # Mock account info to have a bucket restriction
        # account_info.get_allowed() returns the allowed dictionary
        mock_allowed = {
            'capabilities': ['listBuckets'],
            'bucketId': 'bucket_id_123',
            'bucketName': 'my-restricted-bucket'
        }
        api.account_info.get_allowed = MagicMock(return_value=mock_allowed)
        
        # Mock cache to return None (to force it to call list_buckets)
        api.cache.get_bucket_id_or_none_from_bucket_name = MagicMock(return_value=None)
        
        # Mock the session to return a list of buckets
        # We need to see if it fails before calling list_buckets or not
        # Wait, the problem is that it calls list_buckets() without args.
        # list_buckets() calls check_bucket_restrictions(None).
        # check_bucket_restrictions(None) raises RestrictedBucket because bucketName is not None.

        with self.assertRaises(RestrictedBucket) as cm:
            api.get_bucket_by_name('my-restricted-bucket')
        
        self.assertEqual(cm.exception.allowed_bucket_name, 'my-restricted-bucket')

if __name__ == '__main__':
    unittest.main()
```

Wait, I should check if `get_bucket_by_name` actually calls `list_buckets()`.
Yes, it does:
```python
        for bucket in self.list_buckets():
            if bucket.name == bucket_name:
                return bucket
```

Let's run this repro script.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nimport unittest\nfrom unittest.mock import MagicMock\nfrom b2.api import B2Api\nfrom b2.exception import RestrictedBucket\n\nclass TestB2Api(unittest.TestCase):\n    def test_get_bucket_by_name_restricted(self):\n        api = B2Api()\n        # Mock account info to have a bucket restriction\n        mock_allowed = {\n            'capabilities': ['listBuckets'],\n            'bucketId': 'bucket_id_123',\n            'bucketName': 'my-restricted-bucket'\n        }\n        api.account_info.get_allowed = MagicMock(return_value=mock_allowed)\n        \n        # Mock cache to return None (to force it to call list_buckets)\n        api.cache.get_bucket_id_or_none_from_bucket_name = MagicMock(return_value=None)\n        \n        try:\n            api.get_bucket_by_name('my-restricted-bucket')\n        except RestrictedBucket as e:\n            print(f\"Caught expected exception: {e}\")\n            return\n        except Exception as e:\n            print(f\"Caught unexpected exception: {type(e).__name__}: {e}\")\n            raise e\n        \n        print(\"FAIL: No RestrictedBucket exception raised\")\n        raise AssertionError(\"No RestrictedBucket exception raised\")\n\nif __name__ == '__main__':\n    unittest.main()\nPY\n"
}
Result of run_command 3,376 characters
{
  "status": "error",
  "error_type": "CommandError",
  "error_message": "E\n======================================================================\nERROR: test_get_bucket_by_name_restricted (__main__.TestB2Api)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/b2/account_info/sqlite_account_info.py\", line 269, in _get_account_info_or_raise\n    value = cursor.fetchone()[0]\nTypeError: 'NoneType' object is not subscriptable\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File \"<stdin>\", line 27, in test_get_bucket_by_name_restricted\n  File \"<stdin>\", line 21, in test_get_bucket_by_name_restricted\n  File \"/workspace/b2/api.py\", line 219, in get_bucket_by_name\n    for bucket in self.list_buckets():\n  File \"/usr/local/lib/python3.7/site-packages/logfury/_logfury/trace_call.py\", line 86, in wrapper\n    return function(*wrapee_args, **wrapee_kwargs)\n  File \"/workspace/b2/api.py\", line 247, in list_buckets\n    account_id = self.account_info.get_account_id()\n  File \"/workspace/b2/account_info/sqlite_account_info.py\", line 238, in get_account_id\n    return self._get_account_info_or_raise('account_id')\n  File \"/workspace/b2/account_info/sqlite_account_info.py\", line 276, in _get_account_info_or_raise\n    raise MissingAccountData(str(e))\nb2.account_info.exception.MissingAccountData: Missing account data: 'NoneType' object is not subscriptable\n\n----------------------------------------------------------------------\nRan 1 test in 0.016s\n\nFAILED (errors=1)\n",
  "details": {
    "stdout": "Caught unexpected exception: MissingAccountData: Missing account data: 'NoneType' object is not subscriptable\n",
    "stderr": "E\n======================================================================\nERROR: test_get_bucket_by_name_restricted (__main__.TestB2Api)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/b2/account_info/sqlite_account_info.py\", line 269, in _get_account_info_or_raise\n    value = cursor.fetchone()[0]\nTypeError: 'NoneType' object is not subscriptable\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File \"<stdin>\", line 27, in test_get_bucket_by_name_restricted\n  File \"<stdin>\", line 21, in test_get_bucket_by_name_restricted\n  File \"/workspace/b2/api.py\", line 219, in get_bucket_by_name\n    for bucket in self.list_buckets():\n  File \"/usr/local/lib/python3.7/site-packages/logfury/_logfury/trace_call.py\", line 86, in wrapper\n    return function(*wrapee_args, **wrapee_kwargs)\n  File \"/workspace/b2/api.py\", line 247, in list_buckets\n    account_id = self.account_info.get_account_id()\n  File \"/workspace/b2/account_info/sqlite_account_info.py\", line 238, in get_account_id\n    return self._get_account_info_or_raise('account_id')\n  File \"/workspace/b2/account_info/sqlite_account_info.py\", line 276, in _get_account_info_or_raise\n    raise MissingAccountData(str(e))\nb2.account_info.exception.MissingAccountData: Missing account data: 'NoneType' object is not subscriptable\n\n----------------------------------------------------------------------\nRan 1 test in 0.016s\n\nFAILED (errors=1)\n",
    "exit_code": 1
  }
}
Generated tokens 847 tokens · stopped: STOP
Most of these are mocks. I can write a reproduction script. I'll mock `B2Api` and its dependencies. Actually, I can just use the real `B2Api` and mock the `account_info` and `cache`. ```python import unittest from unittest.mock import MagicMock, patch from b2.api import B2Api from b2.exception import RestrictedBucket class TestB2Api(unittest.TestCase): def test_get_bucket_by_name_restricted(self): api = B2Api() # Mock account info to have a bucket restriction # account_info.get_allowed() returns the allowed dictionary mock_allowed = { 'capabilities': ['listBuckets'], 'bucketId': 'bucket_id_123', 'bucketName': 'my-restricted-bucket' } api.account_info.get_allowed = MagicMock(return_value=mock_allowed) # Mock cache to return None (to force it to call list_buckets) api.cache.get_bucket_id_or_none_from_bucket_name = MagicMock(return_value=None) # Mock the session to return a list of buckets # We need to see if it fails before calling list_buckets or not # Wait, the problem is that it calls list_buckets() without args. # list_buckets() calls check_bucket_restrictions(None). # check_bucket_restrictions(None) raises RestrictedBucket because bucketName is not None. with self.assertRaises(RestrictedBucket) as cm: api.get_bucket_by_name('my-restricted-bucket') self.assertEqual(cm.exception.allowed_bucket_name, 'my-restricted-bucket') if __name__ == '__main__': unittest.main() ``` Wait, I should check if `get_bucket_by_name` actually calls `list_buckets()`. Yes, it does: ```python for bucket in self.list_buckets(): if bucket.name == bucket_name: return bucket ``` Let's run this repro script.<channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' import unittest from unittest.mock import MagicMock from b2.api import B2Api from b2.exception import RestrictedBucket class TestB2Api(unittest.TestCase): def test_get_bucket_by_name_restricted(self): api = B2Api() # Mock account info to have a bucket restriction mock_allowed = { 'capabilities': ['listBuckets'], 'bucketId': 'bucket_id_123', 'bucketName': 'my-restricted-bucket' } api.account_info.get_allowed = MagicMock(return_value=mock_allowed) # Mock cache to return None (to force it to call list_buckets) api.cache.get_bucket_id_or_none_from_bucket_name = MagicMock(return_value=None) try: api.get_bucket_by_name('my-restricted-bucket') except RestrictedBucket as e: print(f"Caught expected exception: {e}") return except Exception as e: print(f"Caught unexpected exception: {type(e).__name__}: {e}") raise e print("FAIL: No RestrictedBucket exception raised") raise AssertionError("No RestrictedBucket exception raised") if __name__ == '__main__': unittest.main() PY <|"|>}<tool_call|><|tool_response>
Turn 12at 410 s422 tokens out10,949 prompt tokens
Ah, `B2Api` uses `SqliteAccountInfo` by default, and it's failing because the SQLite database is empty. I should mock `account_info` entirely or mock `get_account_id()`.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nimport unittest\nfrom unittest.mock import MagicMock\nfrom b2.api import B2Api\nfrom b2.exception import RestrictedBucket\n\nclass TestB2Api(unittest.TestCase):\n    def test_get_bucket_by_name_restricted(self):\n        api = B2Api()\n        # Mock account info to have a bucket restriction\n        mock_allowed = {\n            'capabilities': ['listBuckets'],\n            'bucketId': 'bucket_id_123',\n            'bucketName': 'my-restricted-bucket'\n        }\n        api.account_info.get_allowed = MagicMock(return_value=mock_allowed)\n        api.account_info.get_account_id = MagicMock(return_value='account_id_123')\n        \n        # Mock cache to return None (to force it to call list_buckets)\n        api.cache.get_bucket_id_or_none_from_bucket_name = MagicMock(return_value=None)\n        \n        try:\n            api.get_bucket_by_name('my-restricted-bucket')\n        except RestrictedBucket as e:\n            print(f\"Caught expected exception: {e}\")\n            return\n        except Exception as e:\n            print(f\"Caught unexpected exception: {type(e).__name__}: {e}\")\n            raise e\n        \n        print(\"FAIL: No RestrictedBucket exception raised\")\n        raise AssertionError(\"No RestrictedBucket exception raised\")\n\nif __name__ == '__main__':\n    unittest.main()\nPY\n"
}
Result of run_command 253 characters
{
  "status": "ok",
  "stdout": "Caught expected exception: Application key is restricted to bucket: my-restricted-bucket\n",
  "stderr": ".\n----------------------------------------------------------------------\nRan 1 test in 0.001s\n\nOK\n",
  "exit_code": 0
}
Generated tokens 422 tokens · stopped: STOP
Ah, `B2Api` uses `SqliteAccountInfo` by default, and it's failing because the SQLite database is empty. I should mock `account_info` entirely or mock `get_account_id()`. <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' import unittest from unittest.mock import MagicMock from b2.api import B2Api from b2.exception import RestrictedBucket class TestB2Api(unittest.TestCase): def test_get_bucket_by_name_restricted(self): api = B2Api() # Mock account info to have a bucket restriction mock_allowed = { 'capabilities': ['listBuckets'], 'bucketId': 'bucket_id_123', 'bucketName': 'my-restricted-bucket' } api.account_info.get_allowed = MagicMock(return_value=mock_allowed) api.account_info.get_account_id = MagicMock(return_value='account_id_123') # Mock cache to return None (to force it to call list_buckets) api.cache.get_bucket_id_or_none_from_bucket_name = MagicMock(return_value=None) try: api.get_bucket_by_name('my-restricted-bucket') except RestrictedBucket as e: print(f"Caught expected exception: {e}") return except Exception as e: print(f"Caught unexpected exception: {type(e).__name__}: {e}") raise e print("FAIL: No RestrictedBucket exception raised") raise AssertionError("No RestrictedBucket exception raised") if __name__ == '__main__': unittest.main() PY <|"|>}<tool_call|><|tool_response>
Turn 13at 419 s144 tokens out11,456 prompt tokens
Great! The reproduction script confirms the bug: `get_bucket_by_name` calls `list_buckets()` without arguments, which triggers `RestrictedBucket` when the key is restricted.

Now I will apply the fix: change `self.list_buckets()` to `self.list_buckets(bucket_name)` in `get_bucket_by_name`.

Let's read the exact lines of `get_bucket_by_name` again to make sure I have the context right.
TOOL CALL · read_file
{
  "end_line": 225,
  "filepath": "b2/api.py",
  "start_line": 210
}
Result of read_file 746 characters
{
  "status": "ok",
  "filepath": "b2/api.py",
  "content": "        If we don't already know it from the cache, try fetching it from\n        the B2 service.\n        \"\"\"\n        # If we can get it from the stored info, do that.\n        self.check_bucket_restrictions(bucket_name)\n        id_ = self.cache.get_bucket_id_or_none_from_bucket_name(bucket_name)\n        if id_ is not None:\n            return Bucket(self, id_, name=bucket_name)\n\n        for bucket in self.list_buckets():\n            if bucket.name == bucket_name:\n                return bucket\n        raise NonExistentBucket(bucket_name)\n\n    def delete_bucket(self, bucket):\n        \"\"\"",
  "start_line": 210,
  "end_line": 225,
  "total_lines": 372,
  "is_truncated": false
}
Generated tokens 144 tokens · stopped: STOP
Great! The reproduction script confirms the bug: `get_bucket_by_name` calls `list_buckets()` without arguments, which triggers `RestrictedBucket` when the key is restricted. Now I will apply the fix: change `self.list_buckets()` to `self.list_buckets(bucket_name)` in `get_bucket_by_name`. Let's read the exact lines of `get_bucket_by_name` again to make sure I have the context right. <channel|><|tool_call>call:read_file{end_line:225,filepath:<|"|>b2/api.py<|"|>,start_line:210}<tool_call|><|tool_response>
Turn 14at 423 s55 tokens out11,846 prompt tokens
Wait, I should also check if there's an async version of this. Let me search for `AsyncB2Api` or similar.
TOOL CALL · run_command
{
  "command": "grep -rn \"AsyncB2Api\" ."
}
Result of run_command 127 characters
{
  "status": "error",
  "error_type": "CommandError",
  "error_message": "",
  "details": {
    "stdout": "",
    "stderr": "",
    "exit_code": 1
  }
}
Generated tokens 55 tokens · stopped: STOP
Wait, I should also check if there's an async version of this. Let me search for `AsyncB2Api` or similar. <channel|><|tool_call>call:run_command{command:<|"|>grep -rn "AsyncB2Api" .<|"|>}<tool_call|><|tool_response>
Turn 15at 428 s49 tokens out11,956 prompt tokens
No `AsyncB2Api` found. Let's check if there are other API-like classes.
TOOL CALL · run_command
{
  "command": "grep -rn \"class .*Api\" b2/"
}
Result of run_command 307 characters
{
  "status": "ok",
  "stdout": "b2/api.py:41:class B2Api(object):\nb2/raw_simulator.py:508:class RawSimulator(AbstractRawApi):\nb2/console_tool.py:1189:class TestRawApi(Command):\nb2/raw_api.py:51:class AbstractRawApi(object):\nb2/raw_api.py:124:class B2RawApi(AbstractRawApi):\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 49 tokens · stopped: STOP
No `AsyncB2Api` found. Let's check if there are other API-like classes. <channel|><|tool_call>call:run_command{command:<|"|>grep -rn "class .*Api" b2/<|"|>}<tool_call|><|tool_response>

Patch, tests and logs

Final code change Included
Test output Missing
Not saved for this rollout. Nothing has been inferred or reconstructed.
Test errors Missing
Not saved for this rollout. Nothing has been inferred or reconstructed.
Test report (JUnit) Missing
Not saved for this rollout. Nothing has been inferred or reconstructed.
Agent log Included
  [   0.0s] 📋 System Prompt: You are a principal Python software engineer resolving a repository issue in `/workspace`.
  [   0.0s] 🎯 Task Prompt: You are evaluating a software engineering task for repository 
Backblaze/B2_Command_Line_Tool.
  [  37.0s] 💭 (1521 chars) "The user is reporting an issue where `b2.api.B2Api.get_bucket_by_name` doesn't work with 
bucket-scoped application keys...."
  [  37.0s] 🔧 run_command grep -rn --include="*.py" "get_bucket_by_name" ./b2 ./test
  [  37.0s]   → ./b2/api.py:206:    def get_bucket_by_name(self, bucket_name):
  [  47.3s] 💭 (263 chars) "Okay, `b2/api.py` line 206 is where `get_bucket_by_name` is defined.
Let's read `b2/api.py` around that area and also `l..."
  [  47.3s] 📖 read_file (b2/api.py)
  [  47.4s]   ✓ {'status': 'ok', 'filepath': 'b2/api.py', 'content': '        )\n        return 
self.transferer.download_file_from_url(u…
  [  53.0s] 💭 (93 chars) "Wait, I missed reading `check_bucket_restrictions`. The `read_file` only went up to line 
349."
  [  53.0s] 📖 read_file (b2/api.py)
  [  53.0s]   ✓ {'status': 'ok', 'filepath': 'b2/api.py', 'content': 
'##################################################################…
  [  74.5s] 💭 (715 chars) "Wait, I called `read_file` on `b2/api.py` from line 350 to 400, but it returned lines 1 to 
150 because of some reason? A..."
  [  74.5s] 🔧 run_command grep -n "def check_bucket_restrictions" b2/api.py
  [  74.6s]   → 359:    def check_bucket_restrictions(self, bucket_name):
  [  78.0s] 💭 (57 chars) "Okay, it's on line 359. Let me read from line 350 to 400."
  [  78.0s] 📖 read_file (b2/api.py)
  [  78.1s]   ✓ {'status': 'ok', 'filepath': 'b2/api.py', 'content': '        return self.session.list_keys(\n          
account_id, ma…
  [ 157.6s] 💭 (5112 chars) "Okay, so `check_bucket_restrictions` does:
```python
    def check_bucket_restrictions(self, bucket_name):
        # ......"
  [ 157.6s] 📖 read_file (b2/api.py)
  [ 157.7s]   ✓ {'status': 'ok', 'filepath': 'b2/api.py', 'content': 
'##################################################################…
  [ 283.7s] 💭 (7848 chars) "Wait, the `authorize_account` method does this:
```python
        if 'listBuckets' in allowed['capabilities']:
         ..."
  [ 283.7s] 🔧 run_command grep -rn "RestrictedBucket" test/
  [ 283.8s]   → test/test_api.py:15:from b2.exception import RestrictedBucket
  [ 288.0s] 💭 (49 chars) "Let's read `test/test_api.py` around those lines."
  [ 288.0s] 📖 read_file (test/test_api.py)
  [ 288.0s]   ✓ {'status': 'ok', 'filepath': 'test/test_api.py', 'content': "        
self.api.authorize_account('production', key['appli…
  [ 334.2s] 💭 (201 chars) "Okay, `test_list_buckets_with_restriction_and_no_name` confirms that `list_buckets()` raises
`RestrictedBucket` when the..."
  [ 334.2s] 🔧 run_command grep -rn "get_bucket_by_name" test/test_api.py
  [ 334.2s]   → error (exit 0): 
  [ 337.2s] 💭 (68 chars) "It's not in `test/test_api.py`. Let me search for it in other tests."
  [ 337.2s] 🔧 run_command grep -rn "get_bucket_by_name" test/
  [ 337.2s]   → test/test_console_tool.py:388:        bucket = self.b2_api.get_bucket_by_name('my-bucket')
  [ 390.6s] 💭 (1853 chars) "Most of these are mocks.

I can write a reproduction script.
I'll mock `B2Api` and its dependencies.
Actually, I can jus..."
  [ 390.6s] 🔧 run_command (35 lines) python3 - <<'PY'
  [ 390.7s]   → error (exit 0): 
  [ 410.0s] 💭 (169 chars) "Ah, `B2Api` uses `SqliteAccountInfo` by default, and it's failing because the SQLite 
database is empty. I should mock `a..."
  [ 410.0s] 🔧 run_command (36 lines) python3 - <<'PY'
  [ 410.1s]   → Caught expected exception: Application key is restricted to bucket: my-restricted-bucket
  [ 418.7s] 💭 (387 chars) "Great! The reproduction script confirms the bug: `get_bucket_by_name` calls `list_buckets()`
without arguments, which tr..."
  [ 418.7s] 📖 read_file (b2/api.py)
  [ 418.8s]   ✓ {'status': 'ok', 'filepath': 'b2/api.py', 'content': '        If we don\'t already know it from the 
cache, try fetching …
  [ 422.4s] 💭 (105 chars) "Wait, I should also check if there's an async version of this. Let me search for 
`AsyncB2Api` or similar."
  [ 422.4s] 🔧 run_command grep -rn "AsyncB2Api" .
  [ 422.4s]   → error (exit 0): 
  [ 427.2s] 💭 (71 chars) "No `AsyncB2Api` found. Let's check if there are other API-like classes."
  [ 427.2s] 🔧 run_command grep -rn "class .*Api" b2/
  [ 427.2s]   → b2/api.py:41:class B2Api(object):
Native result row
{
  "agent_error": "Agent exceeded session timeout (7.5 min)",
  "duration_seconds": 452.62,
  "error": "Empty agent patch",
  "grade": {
    "error": "Empty agent patch",
    "resolved": false,
    "strict_clean_patch": false,
    "test_exit_code": -1
  },
  "instance_id": "backblaze__b2_command_line_tool-488",
  "pass_idx": 0,
  "patch_chars": 0,
  "phase1_seconds": 452.62,
  "repo": "Backblaze/B2_Command_Line_Tool",
  "request_log_path": "/kaggle-root/working/r31/rollouts_X/requests/backblaze__b2_command_line_tool-488__p0__r1.jsonl",
  "resolved": false,
  "rollout_idx": 1,
  "run_key": "backblaze__b2_command_line_tool-488__p0__r1",
  "strict_clean_patch": false,
  "tool_calls": 15,
  "total_llm_calls": 15,
  "trace_path": "/kaggle-root/working/r31/rollouts_X/traces/trace_backblaze__b2_command_line_tool-488__p0__r1.json"
}