Merge "docs: Clean up formatting"
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Zuul
Gerrit Code Review
commit
2e43285f67
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@ -245,13 +245,10 @@ storage URL options shown below:
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--os-storage-url https://10.1.5.2:8080/v1/AUTH_ced809b6a4baea7aeab61a \
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list
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.. We need the backslash below in order to indent the note
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\
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.. note::
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.. note::
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Leftover environment variables are a common source of confusion when
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authorization fails.
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Leftover environment variables are a common source of confusion when
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authorization fails.
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CLI commands
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~~~~~~~~~~~~
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@ -739,15 +736,15 @@ is passed, the Unix timestamp when the temporary URL will expire.
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But beyond that, ``time`` can also be specified as an ISO 8601 timestamp
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in one of following formats:
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i) Complete date: YYYY-MM-DD (eg 1997-07-16)
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i) Complete date: YYYY-MM-DD (e.g. 1997-07-16)
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ii) Complete date plus hours, minutes and seconds:
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YYYY-MM-DDThh:mm:ss
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(eg 1997-07-16T19:20:30)
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ii) Complete date plus hours, minutes and seconds:
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YYYY-MM-DDThh:mm:ss
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(e.g. 1997-07-16T19:20:30)
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iii) Complete date plus hours, minutes and seconds with UTC designator:
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YYYY-MM-DDThh:mm:ssZ
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(eg 1997-07-16T19:20:30Z)
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iii) Complete date plus hours, minutes and seconds with UTC designator:
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YYYY-MM-DDThh:mm:ssZ
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(e.g. 1997-07-16T19:20:30Z)
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Please be aware that if you don't provide the UTC designator (i.e., Z)
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the timestamp is generated using your local timezone. If only a date is
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@ -881,17 +878,14 @@ Download an object from a container:
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testSwift.txt [auth 0.028s, headers 0.045s, total 0.045s, 0.002 MB/s]
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.. We need the backslash below in order to indent the note
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\
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.. note::
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.. note::
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To upload an object to a container, your current working directory must be
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where the file is located or you must provide the complete path to the file.
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In other words, the --object-name <object-name> is an option that will upload
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file and name object to <object-name> or upload directory and use <object-name> as
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object prefix. In the case that you provide the complete path of the file,
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that complete path will be the name of the uploaded object.
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To upload an object to a container, your current working directory must be
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where the file is located or you must provide the complete path to the file.
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In other words, the --object-name <object-name> is an option that will upload
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file and name object to <object-name> or upload directory and use <object-name> as
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object prefix. In the case that you provide the complete path of the file,
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that complete path will be the name of the uploaded object.
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For example:
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@ -39,17 +39,17 @@ Indices and tables
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License
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~~~~~~~
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Copyright 2013 OpenStack, LLC.
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Copyright 2013 OpenStack, LLC.
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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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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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http://www.apache.org/licenses/LICENSE-2.0
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* http://www.apache.org/licenses/LICENSE-2.0
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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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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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@ -16,41 +16,41 @@ Use Cases
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Alongside the command line tool, the ``python-swiftclient`` includes two
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levels of API:
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* A low level client API that provides simple Python wrappers around the
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various authentication mechanisms and the individual HTTP requests.
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* A high level service API that provides methods for performing common
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operations in parallel on a thread pool.
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* A low level client API that provides simple Python wrappers around the
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various authentication mechanisms and the individual HTTP requests.
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* A high level service API that provides methods for performing common
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operations in parallel on a thread pool.
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Example use cases:
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* Uploading and retrieving data
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Use the command line tool if you are simply uploading and downloading
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files and directories to and from your filesystem. The command line tool
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can be integrated into a shell script to automate tasks.
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* Uploading and retrieving data
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Use the command line tool if you are simply uploading and downloading
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files and directories to and from your filesystem. The command line tool
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can be integrated into a shell script to automate tasks.
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* Integrating into an automated Python workflow
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Use the ``SwiftService`` API to perform operations offered by the CLI
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if your use case requires integration with a Python-based workflow.
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This method offers greater control and flexibility over individual object
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operations, such as the metadata set on each object. The ``SwiftService``
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class provides methods to perform multiple sets of operations against a
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swift object store using a configurable shared thread pool. A single
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instance of the ``SwiftService`` class can be shared between multiple
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threads in your own code.
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* Integrating into an automated Python workflow
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Use the ``SwiftService`` API to perform operations offered by the CLI
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if your use case requires integration with a Python-based workflow.
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This method offers greater control and flexibility over individual object
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operations, such as the metadata set on each object. The ``SwiftService``
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class provides methods to perform multiple sets of operations against a
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swift object store using a configurable shared thread pool. A single
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instance of the ``SwiftService`` class can be shared between multiple
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threads in your own code.
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* Developing an application in Python to access a swift object store
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Use the ``SwiftService`` API to develop Python applications that use
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swift to store and retrieve objects. A ``SwiftService`` instance provides
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a configurable thread pool for performing all operations supported by the
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CLI.
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* Developing an application in Python to access a swift object store
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Use the ``SwiftService`` API to develop Python applications that use
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swift to store and retrieve objects. A ``SwiftService`` instance provides
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a configurable thread pool for performing all operations supported by the
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CLI.
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* Fine-grained control over threading or the requests being performed
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Use the ``Connection`` API if your use case requires fine grained control
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over advanced features or you wish to use your own existing threading
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model. Examples of advanced features requiring the use of the
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``Connection`` API include creating an SLO manifest that references
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already existing objects, or fine grained control over the query strings
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supplied with each HTTP request.
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* Fine-grained control over threading or the requests being performed
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Use the ``Connection`` API if your use case requires fine grained control
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over advanced features or you wish to use your own existing threading
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model. Examples of advanced features requiring the use of the
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``Connection`` API include creating an SLO manifest that references
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already existing objects, or fine grained control over the query strings
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supplied with each HTTP request.
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Important considerations
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~~~~~~~~~~~~~~~~~~~~~~~~
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@ -66,19 +66,19 @@ the proper use case, and not treat the storage like a traditional filesystem.
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There are two main restrictions to bear in mind when designing an application
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that uses an object store:
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* You cannot rename objects. Due to fact that the name of an object is one
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of the factors that determines where the object and its replicas are stored,
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renaming would require multiple copies of the data to be moved between
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physical storage devices. If you want to rename an object you must upload
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to the new location, or make a server side copy request to the new location,
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and then delete the original.
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* You cannot rename objects. Due to fact that the name of an object is one
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of the factors that determines where the object and its replicas are stored,
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renaming would require multiple copies of the data to be moved between
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physical storage devices. If you want to rename an object you must upload
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to the new location, or make a server side copy request to the new location,
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and then delete the original.
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* You cannot modify objects. Objects are stored in multiple locations and
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are checked for integrity based on the MD5 sum calculated during
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upload. In order to modify the contents of an object, the entire desired
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contents must be re-uploaded. In certain special cases it is possible to
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work around this restriction using large objects, but no general
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file-like access is available to modify a stored object.
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* You cannot modify objects. Objects are stored in multiple locations and
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are checked for integrity based on the MD5 sum calculated during
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upload. In order to modify the contents of an object, the entire desired
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contents must be re-uploaded. In certain special cases it is possible to
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work around this restriction using large objects, but no general
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file-like access is available to modify a stored object.
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Objects cannot be locked
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------------------------
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@ -26,10 +26,10 @@ the auth version based on the combination of options specified, but
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supplying options from multiple different auth versions can cause unexpected
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behaviour.
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.. note::
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.. note::
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Leftover environment variables are a common source of confusion when
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authorization fails.
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Leftover environment variables are a common source of confusion when
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authorization fails.
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Keystone V3
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~~~~~~~~~~~
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@ -109,17 +109,17 @@ in this dictionary are described below, along with their defaults:
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Options
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~~~~~~~
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``retries``: ``5``
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``retries``: ``5``
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The number of times that the library should attempt to retry HTTP
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actions before giving up and reporting a failure.
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``container_threads``: ``10``
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``container_threads``: ``10``
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``object_dd_threads``: ``10``
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``object_dd_threads``: ``10``
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``object_uu_threads``: ``10``
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``object_uu_threads``: ``10``
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``segment_threads``: ``10``
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``segment_threads``: ``10``
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The above options determine the size of the available thread pools for
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performing swift operations. Container operations (such as listing a
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container) operate in the container threads, and a similar pattern
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@ -131,86 +131,86 @@ Options
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``uu`` and ``dd``. This stands for "upload/update" and "download/delete",
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and the corresponding actions will be run on separate threads pools.
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``segment_size``: ``None``
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``segment_size``: ``None``
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If specified, this option enables uploading of large objects. Should the
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object being uploaded be larger than 5G in size, this option is
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mandatory otherwise the upload will fail. This option should be
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specified as a size in bytes.
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``use_slo``: ``False``
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``use_slo``: ``False``
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Used in combination with the above option, ``use_slo`` will upload large
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objects as static rather than dynamic. Only static large objects provide
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error checking for the downloaded object, so we recommend this option.
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``segment_container``: ``None``
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``segment_container``: ``None``
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Allows the user to select the container into which large object segments
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will be uploaded. We do not recommend changing this value as it could make
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locating orphaned segments more difficult in the case of errors.
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``leave_segments``: ``False``
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``leave_segments``: ``False``
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Setting this option to true means that when deleting or overwriting a large
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object, its segments will be left in the object store and must be cleaned
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up manually. This option can be useful when sharing large object segments
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between multiple objects in more advanced scenarios, but must be treated
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with care, as it could lead to ever increasing storage usage.
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``changed``: ``None``
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``changed``: ``None``
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This option affects uploads and simply means that those objects which
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already exist in the object store will not be overwritten if the ``mtime``
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and size of the source is the same as the existing object.
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``skip_identical``: ``False``
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``skip_identical``: ``False``
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A slightly more thorough case of the above, but rather than ``mtime`` and size
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uses an object's ``MD5 sum``.
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``yes_all``: ``False``
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``yes_all``: ``False``
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This options affects only download and delete, and in each case must be
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specified in order to download/delete the entire contents of an account.
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This option has no effect on any other calls.
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``no_download``: ``False``
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``no_download``: ``False``
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This option only affects download and means that all operations proceed as
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normal with the exception that no data is written to disk.
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``header``: ``[]``
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``header``: ``[]``
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Used with upload and post operations to set headers on objects. Headers
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are specified as colon separated strings, e.g. "content-type:text/plain".
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``meta``: ``[]``
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``meta``: ``[]``
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Used to set metadata on an object similarly to headers.
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.. note::
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Setting metadata is a destructive operation, so when updating one
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of many metadata values all desired metadata for an object must be re-applied.
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``long``: ``False``
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``long``: ``False``
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Affects only list operations, and results in more metrics being made
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available in the results at the expense of lower performance.
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``fail_fast``: ``False``
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``fail_fast``: ``False``
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Applies to delete and upload operations, and attempts to abort queued
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tasks in the event of errors.
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``prefix``: ``None``
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``prefix``: ``None``
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Affects list operations; only objects with the given prefix will be
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returned/affected. It is not advisable to set at the service level, as
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those operations that call list to discover objects on which they should
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operate will also be affected.
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``delimiter``: ``None``
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``delimiter``: ``None``
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Affects list operations, and means that listings only contain results up
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to the first instance of the delimiter in the object name. This is useful
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for working with objects containing '/' in their names to simulate folder
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structures.
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``dir_marker``: ``False``
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``dir_marker``: ``False``
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Affects uploads, and allows empty 'pseudofolder' objects to be created
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when the source of an upload is ``None``.
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``checksum``: ``True``
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``checksum``: ``True``
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Affects uploads and downloads. If set check md5 sum for the transfer.
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``shuffle``: ``False``
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``shuffle``: ``False``
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When downloading objects, the default behaviour of the CLI is to shuffle
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lists of objects in order to spread the load on storage drives when multiple
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clients are downloading the same files to multiple locations (e.g. in the
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@ -220,12 +220,12 @@ Options
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are downloaded in lexically-sorted order. Setting this option to ``True``
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gives the same shuffling behaviour as the CLI.
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``destination``: ``None``
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``destination``: ``None``
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When copying objects, this specifies the destination where the object
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will be copied to. The default of None means copy will be the same as
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source.
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``fresh_metadata``: ``None``
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``fresh_metadata``: ``None``
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When copying objects, this specifies that the object metadata on the
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source will *not* be applied to the destination object - the
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destination object will have a new fresh set of metadata that includes
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