146 lines
5.8 KiB
Python
146 lines
5.8 KiB
Python
# -*- coding: utf-8 -*- #
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# Copyright 2020 Google LLC. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""The canonical error codes for Google APIs."""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import unicode_literals
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import enum
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class Code(enum.Enum):
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"""Defines the canonical error codes for API responses."""
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# Not an error; returned on success
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OK = 0
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# The operation was cancelled, typically by the caller.
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CANCELLED = 1
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# Unknown error. For example, this error may be returned when
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# a Status value received from another address space belongs to
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# an error-space that is not known in this address space. Also
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# errors raised by APIs that do not return enough error information
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# may be converted to this error.
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UNKNOWN = 2
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# The client specified an invalid argument. Note that this differs
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# from FAILED_PRECONDITION. INVALID_ARGUMENT indicates arguments
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# that are problematic regardless of the state of the system
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# (e.g., a malformed file name).
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INVALID_ARGUMENT = 3
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# The deadline expired before the operation could complete. For operations
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# that change the state of the system, this error may be returned
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# even if the operation has completed successfully. For example, a
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# successful response from a server could have been delayed long
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# enough for the deadline to expire.
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DEADLINE_EXCEEDED = 4
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# Some requested entity (e.g., file or directory) was not found.
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#
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# Note to server developers: if a request is denied for an entire class
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# of users, such as gradual feature rollout or undocumented allowlist,
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# `NOT_FOUND` may be used. If a request is denied for some users within
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# a class of users, such as user-based access control, `PERMISSION_DENIED`
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# must be used.
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NOT_FOUND = 5
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# The entity that a client attempted to create (e.g., file or directory)
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# already exists.
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ALREADY_EXISTS = 6
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# The caller does not have permission to execute the specified
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# operation. `PERMISSION_DENIED` must not be used for rejections
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# caused by exhausting some resource (use `RESOURCE_EXHAUSTED`
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# instead for those errors). `PERMISSION_DENIED` must not be
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# used if the caller can not be identified (use `UNAUTHENTICATED`
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# instead for those errors). This error code does not imply the
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# request is valid or the requested entity exists or satisfies
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# other pre-conditions.
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PERMISSION_DENIED = 7
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# The request does not have valid authentication credentials for the
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# operation.
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UNAUTHENTICATED = 16
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# Some resource has been exhausted, perhaps a per-user quota, or
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# perhaps the entire file system is out of space.
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RESOURCE_EXHAUSTED = 8
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# The operation was rejected because the system is not in a state
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# required for the operation's execution. For example, the directory
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# to be deleted is non-empty, an rmdir operation is applied to
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# a non-directory, etc.
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#
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# A litmus test that may help a service implementer in deciding
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# between FAILED_PRECONDITION, ABORTED, and UNAVAILABLE:
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# (a) Use UNAVAILABLE if the client can retry just the failing call.
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# (b) Use ABORTED if the client should retry at a higher-level
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# (e.g., when a client-specified test-and-set fails, indicating the
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# client should restart a read-modify-write sequence).
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# (c) Use FAILED_PRECONDITION if the client should not retry until
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# the system state has been explicitly fixed. E.g., if an "rmdir"
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# fails because the directory is non-empty, FAILED_PRECONDITION
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# should be returned since the client should not retry unless
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# the files are deleted from the directory.
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FAILED_PRECONDITION = 9
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# The operation was aborted, typically due to a concurrency issue such as
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# a sequencer check failure or transaction abort.
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#
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# See litmus test above for deciding between FAILED_PRECONDITION,
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# ABORTED, and UNAVAILABLE.
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ABORTED = 10
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# The operation was attempted past the valid range. E.g., seeking or
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# reading past end-of-file.
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#
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# Unlike INVALID_ARGUMENT, this error indicates a problem that may
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# be fixed if the system state changes. For example, a 32-bit file
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# system will generate INVALID_ARGUMENT if asked to read at an
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# offset that is not in the range [0,2^32-1], but it will generate
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# OUT_OF_RANGE if asked to read from an offset past the current
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# file size.
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#
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# There is a fair bit of overlap between FAILED_PRECONDITION and
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# OUT_OF_RANGE. We recommend using OUT_OF_RANGE (the more specific
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# error) when it applies so that callers who are iterating through
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# a space can easily look for an OUT_OF_RANGE error to detect when
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# they are done.
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OUT_OF_RANGE = 11
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# The operation is not implemented or is not supported/enabled in this
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# service.
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UNIMPLEMENTED = 12
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# Internal errors. This means that some invariants expected by the
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# underlying system have been broken. This error code is reserved
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# for serious errors.
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INTERNAL = 13
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# The service is currently unavailable. This is most likely a
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# transient condition, which can be corrected by retrying with
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# a backoff. Note that it is not always safe to retry
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# non-idempotent operations.
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#
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# See litmus test above for deciding between FAILED_PRECONDITION,
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# ABORTED, and UNAVAILABLE.
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UNAVAILABLE = 14
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# Unrecoverable data loss or corruption.
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DATA_LOSS = 15
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