This patch set reorganizes Deckhand's documentation structure for better organization into 3 distinct categories: * developer's guide * operator's guide * user's guide This means that the RTD navigation menu on the left-hand side will have fewer links (see list above) making navigation much easier. This is similar to how Armada organizes its documentation too. This patch set also updates README section with a better overview and trims some fat from it (remove testing documentation as it doesn't really belong there -- there is a dedicated page for that already). Finally, this patch set changes the exceptions page to render as a basic list of autoexception classes because the current tabularized view is not rendering correctly on RTD [0]. [0] https://airship-deckhand.readthedocs.io/en/latest/exceptions.html Change-Id: I162383bf8e3bbd5004603c979ac7b0d760a210c4
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Revision History
Revision History
Documents will be ingested in batches which will be given a revision index. This provides a common language for describing complex validations on sets of documents.
Revisions can be thought of as commits in a linear git history, thus looking at a revision includes all content from previous revisions.
Revision Diffing
By maintaining a linear history of all the documents in each revision, Deckhand is able to diff different revisions together to report what has changed across revisions, allowing external services to determine whether the Deckhand configuration undergone any changes since the service last queried the Deckhand API.
The revision difference is calculated by comparing the overall difference across all the documents in
the buckets associated with the two revisions that are diffed. For
example, if a bucket shared between two revisions contains two
documents, and between the first revision and the second revision, if
only one of those two documents has been modified, the bucket itself is
tagged as modified
. For more information about revision
diffing, please reference the api-ref
.
Revision DeepDiffing
Revision DeepDiffing is an extended version of existing revision diff
api. When any bucket state gets changed to modified
, It
shows deep difference between revisions. DeepDiffing resultset will
consist of document_added
, document_deleted
and document_changed
count and details. For more
information about revision deepdiffing, please reference the api-ref
.
Revision Rollback
As all the changes to documents are maintained via revisions, it is
possible to rollback the latest revision in Deckhand to a prior
revision. This behavior can be loosely compared to a
git rebase
in which it is possible to squash the latest
revision in order to go back to the previous revision. This behavior is
useful for undoing accidental changes and returning to a stable internal
configuration.