This change adds instance bindings to Painless. This binding allows a whitelisted
method to be called on an instance instantiated prior to script compilation.
Whitelisting must be done in code as there is no practical way to instantiate a
useful instance from a text file (see the tests for an example). Since an
instance can be shared by multiple scripts, each method called must be
thread-safe.
We throw parsing exception when an unknown array is found, but we don't when an unknown top-level field is found. This commit makes sure that unsupported top-level fields are not ignored in a do section.
Closes#34651
Access to special variables _source and _fields were accidentally
removed in recent refactorings. This commit adds them back, along with a
test.
closes#33884
- Restrict visibility of Aggregators and Factories
- Move PipelineAggregatorBuilders up a level so it is consistent with
AggregatorBuilders
- Checkstyle line length fixes for a few classes
- Minor odds/ends (swapping to method references, formatting, etc)
This removes the extraneous check to see if the class for a statically imported
method is already whitelisted, so a statically imported method can be whitelisted
independently.
Since all calls to `ESLoggerFactory` outside of the logging package were
deprecated, it seemed like it'd simplify things to migrate all of the
deprecated calls and declare `ESLoggerFactory` to be package private.
This does that.
When a script uses the special-cased SearchScript or ExecutableScript, Painless is
internally caching the GenericElasticsearchScript that is generated via compile as part of
the newInstance method for the factories. This breaks the model for class bindings as the
class binding expects to not have any stored information for each instance generated via
newInstance from the factory. This change fixes the issue by creating a new instance of
the GenericElasticsearchScript each time newInstance is called against the factory.
It is sometimes desirable to pass a class into a script constructor that
will not actually be exposed in the script whitelist. This commit uses
reflection when creating the compiler to find all the classes of the
factory method signature, and make the classloader that wraps lookup
also expose these classes.
* Adds equals/hashcode methods to the Painless* objects within the lookup package.
* Changes the caches to use the Painless* objects as keys as well as values. This forces
future changes to taken into account the appropriate values for caching.
* Deletes the existing caching objects in favor of Painless* objects. This removes a pair of
bugs that were not taking into account subtle corner cases related to augmented methods
and caching.
* Uses the Painless* objects to check for equivalency in existing Painless* objects that
may have already been added to a PainlessClass. This removes a bug related to return
not being appropriately checked when adding methods.
* Cleans up several error messages.
This change cleans up "unused variable" warnings. There are several cases were we
most likely want to suppress the warnings (especially in the client documentation test
where the snippets contain many unused variables). In a lot of cases the unused
variables can just be deleted though.
This change adds the OneStatementPerLineCheck to our checkstyle precommit
checks. This rule restricts the number of statements per line to one. The
resoning behind this is that it is very difficult to read multiple statements on
one line. People seem to mostly use it in short lambdas and switch statements in
our code base, but just going through the changes already uncovered some actual
problems in randomization in test code, so I think its worth it.
With the upcoming instance bindings, the singular *Binding name isn't descriptive enough
with multiple binding types. This renames the existing *Binding classes to *ClassBinding.
Mechanical change (with some error messages changed from binding to class binding by
hand).
This commit switches the joda time backcompat in scripting to use
augmentation over ZonedDateTime. The augmentation methods provide
compatibility with the missing methods between joda's DateTime and
java's ZonedDateTime. Due to getDayOfWeek returning an enum in the java
API, ZonedDateTime is wrapped so that the method can return int like the
joda time does. The java time api version is renamed to
getDayOfWeekEnum, which will be kept through 7.x for compatibility while
users switch back to getDayOfWeek once joda compatibility is removed.
* LeafCollector.setScorer() now takes a Scorable
* Scorers may not have null Weights
* IndexWriter.getFlushingBytes() reports how much memory is being used by IW threads writing to disk
The main benefit of the upgrade for users is the search optimization for top scored documents when the total hit count is not needed. However this optimization is not activated in this change, there is another issue opened to discuss how it should be integrated smoothly.
Some comments about the change:
* Tests that can produce negative scores have been adapted but we need to forbid them completely: #33309Closes#32899
When the change was made to the format for in the whitelist for bindings, parameters from
both the constructor and the method were combined into a single list instead of separate
lists. The check for method parameters was being executed from the start of the combined
list rather than the correct position. The tests for bindings used a constructor and a method
that only used the int types so this was not caught. The test has been changed to also use
a double type and this issue is fixed.
Trailers (statements following something like an if statement) that don't use brackets currently require a semicolon even if they're the last statement. This is a regression caused by (#29566) and noted by (#33193). This change fixes the regression and adds a test for the broken case.
This removes def from the classes map in PainlessLookup and instead always special
cases it. This prevents potential calls against the def type that shouldn't be made and
forces all cases of def throughout Painless code to be special cased.
This changes the whitelist parameter fqn_only to no_import when specifying that a
whitelisted class must have the fully-qualified-name instead of a shortcut name. This more
closely correlates with Java imports, hence the rename.
This commit adds two pieces. The first is a small set of documentation providing
instructions on how to get setup to run context examples. This will require a download
similar to how Kibana works for some of the examples. The second is an ingest processor
example using the downloaded data. More examples will follow as ideally one per PR.
This also adds a set of tests to individually test each script as a unit test.
This change consolidates all the logic for generating a FunctionReference (renamed from
FunctionRef) from several arbitrary constructors to a single static function that is used at
both compile-time and run-time. This increases long-term maintainability as it is much
easier to follow when and how a function reference is being generated. It moves most of
the duplicated logic out of the ECapturingFuncRef, EFuncRef and ELambda nodes and
Def as well.
This modifies Def to use a Map<String, LocalMethod> to look up user-defined methods at runtime
instead of writing constant methodhandles to do the reverse lookup. This creates a consistency
between how LocalMethods are looked up at compile-time and run-time. This consistency will allow
this code to be more maintainable moving forward. This will also allow FunctionReference to be
cleaned up in a follow up PR.
Renames existing methods in PainlessLookup. Adds lookupPainlessClass,
lookupPainlessMethod, and lookupPainlessField to PainlessLookup. This consolidates
the logic necessary to look these things up into a single place and begins the clean up of
some of the nodes that were looking each of these things up individually. This also has
the added benefit of improved consistency in error messaging.
This commit adds a boolean system property, `es.scripting.use_java_time`,
which controls the concrete return type used by doc values within
scripts. The return type of accessing doc values for a date field is
changed to Object, essentially duck typing the type to allow
co-existence during the transition from joda time to java time.
Renames and removes variables from PainlessMethod to follow the new naming
convention. Generates methodtypes at compile-time instead of using a method at run-
time. Moves write method to MethodWriter.
This commit fixes the painless compiler classloader to know about the
classes from the script context. This fixes an issue when a custom
context is used from a plugin which caused a ClassNotFoundException for
the script class and its factory classes.
PainlessMethod was being used as both a method and a constructor, and while there are
similarities, there are also some major differences. This allows the reflection objects to be
stored reducing the number of other pieces of data stored in a PainlessMethod as they are
now redundant. This temporarily increases some of the code in FunctionRef and
PainlessDocGenerator as they now differentiate between constructors and methods, BUT
is also makes the code more maintainable because there aren't checks in several places
anymore to differentiate.
MethodType can be computed at compile-time rather than run-time. This removes the
method that collects MethodType at run-time from a PainlessMethod since is it no longer
necessary.
Removes the variables name, clazz, and type as they are unnecessary. Renames
staticMembers -> staticFields, members -> fields, getters -> getterMethodHandles, and
setters -> setterMethodHandles.
Implements a static function in PainlessLookupBuilder that contains all the logic related
to Whitelist. PainlessLookupBuilder is available for use in loading from methods beyond
Whitelist now.
This finishes the updating the methods in the PainlessLookupBuilder to the new naming scheme. Mechanical change. Methods include the ones used for copying members in the inheritance hierarchy, calculating shortcuts, and setting the functional interface.
This is largely mechanical change that cleans up the addConstructor, addMethod, and
addFields methods in PainlessLookup. Changes include renamed variables, better error
messages, and some minor code movement to make it more maintainable long term.
* INGEST: Make a few Processors callable by Painless
* Extracted a few stateless String processors as well as the json processor to static methods and whitelisted them in Painless
* provide whitelist from processors plugin
This removes some extraneous naming syntax and makes clear the meaning of certain
naming conventions without ambiguities (stricter) within the lookup package. Purely
mechanical change. Note this does not cover a large portion of the
PainlessLookupBuilder and PainlessLookup yet as there are several more follow up PRs for these incoming.
This change cleans up the addPainlessClass methods by doing the following things:
* Rename many variable names to match the new conventions described in the JavaDocs
for PainlessLookup
* Decouples Whitelist.Class from adding a PainlessClass directly
* Adds a second version of addPainlessClass that is intended for use to add future
defaults in a follow PR
This change also fixes the method and field caches by storing Classes instead of Strings
since it would technically be possible now that the whitelists are extendable to have
different Classes with the same name. It was convenient to add this change together
since some of the new constants are shared.
Note the changes are largely mechanical again where all the code behavior should
remain the same.
This change adds two contexts the execute scripts against:
* SEARCH_SCRIPT: Allows to run scripts in a search script context.
This context is used in `function_score` query's script function,
script fields, script sorting and `terms_set` query.
* FILTER_SCRIPT: Allows to run scripts in a filter script context.
This context is used in the `script` query.
In both contexts a index name needs to be specified and a sample document.
The document is needed to create an in-memory index that the script can
access via the `doc[...]` and other notations. The index name is needed
because a mapping is needed to index the document.
Examples:
```
POST /_scripts/painless/_execute
{
"script": {
"source": "doc['field'].value.length()"
},
"context" : {
"search_script": {
"document": {
"field": "four"
},
"index": "my-index"
}
}
}
```
Returns:
```
{
"result": 4
}
```
POST /_scripts/painless/_execute
{
"script": {
"source": "doc['field'].value.length() <= params.max_length",
"params": {
"max_length": 4
}
},
"context" : {
"filter_script": {
"document": {
"field": "four"
},
"index": "my-index"
}
}
}
Returns:
```
{
"result": true
}
```
Also changed PainlessExecuteAction.TransportAction to use TransportSingleShardAction
instead of HandledAction, because now in case score or filter contexts are used
the request needs to be redirected to a node that has an active IndexService
for the index being referenced (a node with a shard copy for that index).
Several pieces of data in PainlessClass cannot be passed in at the time the
PainlessClass is created so it must be "frozen" after all the data is collected. This means
PainlessClass is currently serving two functions as both a builder and a set of data. This
separates the two pieces into clearly distinct values.
This change also removes the PainlessMethodKey in favor of a simple String. The goal is
to have the painless method key be completely internal to the PainlessLookup eventually
and this simplifies the way there. Note that this was added since PainlessClass and
PainlessClassBuilder were already being changed instead of a follow up PR.
When building the PainlessMethods and PainlessFields they stored a reference to a
PainlessClass. This reference was prior to "freezing" the PainlessClass so the data was
both incomplete and mutable. This has been replaced with a target java class instead
since the PainlessClass is accessible through a java class now and it requires no special
modifications to get around a chicken and egg issue.
The "source" field in SSource seems unused. If removed, it can also be removed
from the ctor, which in turn makes is possible to delete the sourceText in the
Walker class.
* Cleanup Duplication in `PainlessScriptEngine`
* Extract duplicate building of compiler settings to method
* Remove dead method params + dead constant in `ScriptProcessor`
* Handle missing values in painless
Throw an exception for `doc['field'].value`
if this document is missing a value for the `field`.
For 7.0:
This is the default behaviour from 7.0
For 6.x:
To enable this behavior from 6.x, a user can set a jvm.option:
`-Des.script.exception_for_missing_value=true` on a node.
If a user does not enable this behavior, a deprecation warning is logged on start up.
Closes#29286
Create lookup package
rename Definition to PainlessLookup and move to lookup package
rename Definition.Method to PainlessMethod
rename Definition.MethodKey to PainlessMethod
rename Definition.Field to PainlessField
rename Definition.Struct to PainlessClass
rename Definition.Cast to PainlessCast
rename Whitelist.Struct to WhitelistClass
rename Whitelist.Constructor to WhitelistConstructor
rename Whitelist.Method to WhitelistMethod
rename Whitelist.Field to WhitelistField
* Upgrade bouncycastle
Required to fix
`bcprov-jdk15on-1.55.jar; invalid manifest format `
on jdk 11
* Downgrade bouncycastle to avoid invalid manifest
* Add checksum for new jars
* Update tika permissions for jdk 11
* Mute test failing on jdk 11
* Add JDK11 to CI
* Thread#stop(Throwable) was removed
http://mail.openjdk.java.net/pipermail/core-libs-dev/2018-June/053536.html
* Disable failing tests #31456
* Temprorarily disable doc tests
To see if there are other failures on JDK11
* Only blacklist specific doc tests
* Disable only failing tests in ingest attachment plugin
* Mute failing HDFS tests #31498
* Mute failing lang-painless tests #31500
* Fix backwards compatability builds
Fix JAVA version to 10 for ES 6.3
* Add 6.x to bwx -> java10
* Prefix out and err from buildBwcVersion for readability
```
> Task :distribution:bwc:next-bugfix-snapshot:buildBwcVersion
[bwc] :buildSrc:compileJava
[bwc] WARNING: An illegal reflective access operation has occurred
[bwc] WARNING: Illegal reflective access by org.codehaus.groovy.reflection.CachedClass (file:/home/alpar/.gradle/wrapper/dists/gradle-4.5-all/cg9lyzfg3iwv6fa00os9gcgj4/gradle-4.5/lib/groovy-all-2.4.12.jar) to method java.lang.Object.finalize()
[bwc] WARNING: Please consider reporting this to the maintainers of org.codehaus.groovy.reflection.CachedClass
[bwc] WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
[bwc] WARNING: All illegal access operations will be denied in a future release
[bwc] :buildSrc:compileGroovy
[bwc] :buildSrc:writeVersionProperties
[bwc] :buildSrc:processResources
[bwc] :buildSrc:classes
[bwc] :buildSrc:jar
```
* Also set RUNTIME_JAVA_HOME for bwcBuild
So that we can make sure it's not too new for the build to understand.
* Align bouncycastle dependency
* fix painles array tets
closes#31500
* Update jar checksums
* Keep 8/10 runtime/compile untill consensus builds on 11
* Only skip failing tests if running on Java 11
* Failures are dependent of compile java version not runtime
* Condition doc test exceptions on compiler java version as well
* Disable hdfs tests based on runtime java
* Set runtime java to minimum supported for bwc
* PR review
* Add comment with ticket for forbidden apis
This completes the removal of Painless Type. The new data structures in the definition are a map of names (String) to Java Classes and a map of Java Classes to Painless Structs. The names to Java Classes map can contain a 2 to 1 ratio of names to classes depending on whether or not a short (imported) name is used. The Java Classes to Painless Structs is 1 to 1 always where the Java Class name must match the Painless Struct name. This should lead a significantly simpler type system in Painless moving forward since the Painless Type only held redundant information since Painless does not support generics.
* remove left-over comment
* make sure of the property for plugins
* skip installing modules if these exist in the distribution
* Log the distrbution being ran
* Don't allow running with integ-tests-zip passed externally
* top level x-pack/qa can't run with oss distro
* Add support for matching objects in lists
Makes it possible to have a key that points to a list and assert that a
certain object is present in the list. All keys have to be present and
values have to match. The objects in the source list may have additional
fields.
example:
```
match: { 'nodes.$master.plugins': { name: ingest-attachment } }
```
* Update plugin and module tests to work with other distributions
Some of the tests expected that the integration tests will always be ran
with the `integ-test-zip` distribution so that there will be no other
plugins loaded.
With this change, we check for the presence of the plugin without
assuming exclusivity.
* Allow modules to run on other distros as well
To match the behavior of tets.distributions
* Add and use a new `contains` assertion
Replaces the previus changes that caused `match` to do a partial match.
* Implement PR review comments
* Migrate scripted metric aggregation scripts to ScriptContext design #29328
* Rename new script context container class and add clarifying comments to remaining references to params._agg(s)
* Misc cleanup: make mock metric agg script inner classes static
* Move _score to an accessor rather than an arg for scripted metric agg scripts
This causes the score to be evaluated only when it's used.
* Documentation changes for params._agg -> agg
* Migration doc addition for scripted metric aggs _agg object change
* Rename "agg" Scripted Metric Aggregation script context variable to "state"
* Rename a private base class from ...Agg to ...State that I missed in my last commit
* Clean up imports after merge
TransportAction currently contains 2 doExecute methods, one which takes
a the task, and one that does not. The latter is what some subclasses
implement, while the first one just calls the latter, dropping the given
task. This commit combines these methods, in favor of just always
assuming a task is present.
Most transport actions don't need the node ThreadPool. This commit
removes the ThreadPool as a super constructor parameter for
TransportAction. The actions that do need the thread pool then have a
member added to keep it from their own constructor.
Most transport actions don't need to resolve index names. This commit
removes the index name resolver as a super constructor parameter for
TransportAction. The actions that do need the resolver then have a
member added to keep the resolver from their own constructor.
Since #30966, Action no longer has anything but a call to the
GenericAction super constructor. This commit renames GenericAction
into Action, thus eliminating the Action class. Additionally, this
commit removes the Request generic parameter of the class, since
it was unused.
This commit removes the RequestBuilder generic type from Action. It was
needed to be used by the newRequest method, which in turn was used by
client.prepareExecute. Both of these methods are now removed, along with
the existing users of prepareExecute constructing the appropriate
builder directly.
Currently failures to compile a script usually lead to a ScriptException, which
inherits the 500 INTERNAL_SERVER_ERROR from ElasticsearchException if it does
not contain another root cause. Instead, this should be a 400 Bad Request error.
This PR changes this more generally for script compilation errors by changing
ScriptException to return 400 (bad request) as status code.
Closes#12315
The getDate() and getDates() existed prior to 5.x on long fields in
scripting. In 5.x, a new Date type for ScriptDocValues was added. The
getDate() and getDates() methods were left on long fields and added to date
fields to ease the transition. This commit removes those methods for
7.0.
This pipeline aggregation gives the user the ability to script functions that "move" across a window
of data, instead of single data points. It is the scripted version of MovingAvg pipeline agg.
Through custom script contexts, we expose a number of convenience methods:
- MovingFunctions.max()
- MovingFunctions.min()
- MovingFunctions.sum()
- MovingFunctions.unweightedAvg()
- MovingFunctions.linearWeightedAvg()
- MovingFunctions.ewma()
- MovingFunctions.holt()
- MovingFunctions.holtWinters()
- MovingFunctions.stdDev()
The user can also define any arbitrary logic via their own scripting, or combine with the above methods.
We *think* that #28600 is caused by warnings not being collected during
one of the fan out phases of search but we're not 100% sure how this is
happening. This commit drops the number of shards used for the test to 1
so there *isn't* a fan out phase. If this makes the issue go away we'll
have more information.
Added an api that allows to execute an arbitrary script and a result to be returned.
```
POST /_scripts/painless/_execute
{
"script": {
"source": "params.var1 / params.var2",
"params": {
"var1": 1,
"var2": 1
}
}
}
```
Relates to #27875
This allows the grammar to determine when and what delimiters statements will use by
splitting up the statements into regular statements and delimited statements, those that do
not require a delimiter versus those that do. This allows consumers of the statements to
determine what delimiters the statements will use so that in certain cases semicolons are
not necessary like when there's a closing right bracket.
This change removes the need for semicolon insertion in the lexer, simplifying the existing
lexer quite a bit. It also ensures that there isn't a need to track semicolons being inserted
into places that aren't necessary such as array initializers.
As we have factored Elasticsearch into smaller libraries, we have ended
up in a situation that some of the dependencies of Elasticsearch are not
available to code that depends on these smaller libraries but not server
Elasticsearch. This is a good thing, this was one of the goals of
separating Elasticsearch into smaller libraries, to shed some of the
dependencies from other components of the system. However, this now
means that simple utility methods from Lucene that we rely on are no
longer available everywhere. This commit copies IOUtils (with some small
formatting changes for our codebase) into the fold so that other
components of the system can rely on these methods where they no longer
depend on Lucene.
The initializer and afterthought were not having their types
appropriately cast which is necessary with expressions which in turn
caused values to be popped off the stack that were null.
If you call `getDates()` on a long or date type field add a deprecation
warning to the response and log something to the deprecation logger.
This *mostly* worked just fine but if the deprecation logger happens to
roll then the roll will be performed with the script's permissions
rather than the permissions of the server. And scripts don't have
permissions to, say, open files. So the rolling failed. This fixes that
by wrapping the call the deprecation logger in `doPriviledged`.
This is a strange `doPrivileged` call because it doens't check
Elasticsearch's `SpecialPermission`. `SpecialPermission` is a permission
that no-script code has and that scripts never have. Usually all
`doPrivileged` calls check `SpecialPermission` to make sure that they
are not accidentally acting on behalf of a script. But in this case we
are *intentionally* acting on behalf of a script.
Closes#28408
Second part in a series of PR's to remove Painless Type in favor of Java Class. This completely removes the Painless Type dependency from AnalyzerCaster. Both casting and promotion are now based on Java Class exclusively. This also allows AnalyzerCaster to be decoupled from Definition and make cast checks be static calls again.
Ryan Ernst
Jack Conradson
Luca Cavanna
Zachary Tong
Armin Braun
Nik Everett
Kazuhiro Sera
Christoph Büscher
Alan Woodward
Jim Ferenczi
Alexander Reelsen
Alpar Torok
Martijn van Groningen
Mayya Sharipova
Jonathan Little
Tanguy Leroux
Zachary Tong
Robin Neatherway
Jason Tedor