The current implementation starts/stops watcher using an executor. This
can result in our of order operations.
This commit reduces those executor calls to an absolute minimum in order
to be able to do state changes within the cluster state listener method,
which runs in sequence.
When a state change occurs that forces the watcher service to pause
(like no watcher index, no master node, no local shards), the service is
now in a paused state.
Pausing is a super lightweight operation, which marks the
ExecutionService as paused and waits for the currently executing watches
to finish in the background via an executor. The same applies for
stopping, the potentially long running operation is outsourced in to an
executor, as waiting for executed watches is decoupled from the current
state.
The only other long running operation is starting, where watches need to
be loaded. This is also done via an executor, but has an additional
protection by checking the cluster state version it was started with. If
another cluster state version was trying to load the watches, then this
loading will not take effect.
This PR also cleans up some unused states, like the a simple boolean in
the HistoryStore/TriggeredWatchStore marking it as started or stopped,
as this can now be caught in the execution service.
Another advantage of this approach is the fact, that now only triggered
watches are not getting executed, while watches that are run via the
Execute Watch API will still be executed regardless if watcher is
stopped or not.
Lastly the TickerScheduleTriggerEngine thread now only starts on data nodes.
Necessary changes so that the licensing functionality can be
used in a JVM in FIPS 140 approved mode.
* Uses adequate salt length in encryption
* Changes key derivation to PBKDF2WithHmacSHA512 from a custom
approach with SHA512 and manual key stretching
* Removes redundant manual padding
Other relevant changes:
* Uses the SAH512 hash instead of the encrypted key bytes as the
key fingerprint to be included in the license specification
* Removes the explicit verification check of the encryption key
as this is implicitly checked in signature verification.
We had a number of awaitsFix links that weren't updated after the xpack
merge.
Where possible I changed the links to the new locations, but in some
circumstances the original ticket was closed (suggesting the awaitsfix
should be removed) or was otherwise unclear the status.
* master: (24 commits)
Watcher: Ensure mail message ids are unique per watch action (#30112)
REST: Remove GET support for clear cache indices (#29525)
SQL: Correct error message (#30138)
Require acknowledgement to start_trial license (#30135)
Fix a bug in FieldCapabilitiesRequest#equals and hashCode. (#30181)
SQL: Add BinaryMathProcessor to named writeables list (#30127)
Tests: Use buildDir as base for generated-resources (#30191)
Fix SliceBuilderTests#testRandom failures
Build: Fix deb version to use tilde with prerelease versions (#29000)
Fix edge cases in CompositeKeyExtractorTests (#30175)
Document time unit limitations for date histograms (#30177)
Add support for field capabilities to the high-level REST client. (#29664)
Remove licenses missed by the migration (#30128)
[DOCS] Updates docker installation package details (#30110)
Fix TermsSetQueryBuilder.doEquals() method (#29629)
[Monitoring] Remove unhelpful Monitoring tests (#30144)
[Test] Fix RenameProcessorTests.testRenameExistingFieldNullValue() (#29655)
add copyright/scope configuration for intellij to Contributing Guide (#29688)
[test] include oss tar in packaging tests (#30155)
TEST: Update settings should go through cluster state (#29682)
...
This is related to #30134. It modifies the start_trial action to require
an acknowledgement parameter in the rest request to actually start the
trial license. There are backwards compatibility issues as prior ES
versions did not support this parameter. To handle this, it is assumed
that a request coming from a node prior to 6.3 is acknowledged. And
attempts to write a non-acknowledged request to a prior to 6.3 node will
throw an exception.
Additionally this PR adds messages about the trial license the user is
generating.
This commit makes x-pack a module and adds it to the default
distrubtion. It also creates distributions for zip, tar, deb and rpm
which contain only oss code.
Alexander Reelsen
Ioannis Kakavas
Nhat Nguyen
Zachary Tong
Tim Brooks
Martijn van Groningen
Michael Basnight
Ryan Ernst