OpenSearch/docs/java-api/index.asciidoc
Ryan Ernst 33d6a55d1d
Create plugin for internalClusterTest task (#56067)
This commit creates a new gradle plugin to provide a separate task name
and source set for running ESIntegTestCase tests. The only project
converted to use the new plugin in this PR is server, as an example. The
remaining cases in x-pack will be handled in followups.

backport of #55896
2020-05-06 17:20:52 -07:00

150 lines
4.9 KiB
Plaintext

= Java API
include::../Versions.asciidoc[]
[[java-api]]
[preface]
== Preface
deprecated[7.0.0, The `TransportClient` is deprecated in favour of the {java-rest}/java-rest-high.html[Java High Level REST Client] and will be removed in Elasticsearch 8.0. The {java-rest}/java-rest-high-level-migration.html[migration guide] describes all the steps needed to migrate.]
This section describes the Java API that Elasticsearch provides. All
Elasticsearch operations are executed using a
<<client,Client>> object. All
operations are completely asynchronous in nature (either accepts a
listener, or returns a future).
Additionally, operations on a client may be accumulated and executed in
<<java-docs-bulk,Bulk>>.
Note, all the APIs are exposed through the
Java API (actually, the Java API is used internally to execute them).
== Javadoc
The javadoc for the transport client can be found at {transport-client-javadoc}/index.html.
== Maven Repository
Elasticsearch is hosted on
http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.elasticsearch.client%22[Maven
Central].
For example, you can define the latest version in your `pom.xml` file:
["source","xml",subs="attributes"]
--------------------------------------------------
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>transport</artifactId>
<version>{version}</version>
</dependency>
--------------------------------------------------
[[java-transport-usage-maven-lucene]]
=== Lucene Snapshot repository
The very first releases of any major version (like a beta), might have been built on top of a Lucene Snapshot version.
In such a case you will be unable to resolve the Lucene dependencies of the client.
For example, if you want to use the `6.0.0-beta1` version which depends on Lucene `7.0.0-snapshot-00142c9`, you must
define the following repository.
For Maven:
["source","xml",subs="attributes"]
--------------------------------------------------
<repository>
<id>elastic-lucene-snapshots</id>
<name>Elastic Lucene Snapshots</name>
<url>https://s3.amazonaws.com/download.elasticsearch.org/lucenesnapshots/00142c9</url>
<releases><enabled>true</enabled></releases>
<snapshots><enabled>false</enabled></snapshots>
</repository>
--------------------------------------------------
For Gradle:
["source","groovy",subs="attributes"]
--------------------------------------------------
maven {
name "lucene-snapshots"
url 'https://s3.amazonaws.com/download.elasticsearch.org/lucenesnapshots/00142c9'
}
--------------------------------------------------
=== Log4j 2 Logger
You need to also include Log4j 2 dependencies:
["source","xml",subs="attributes"]
--------------------------------------------------
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.11.1</version>
</dependency>
--------------------------------------------------
And also provide a Log4j 2 configuration file in your classpath.
For example, you can add in your `src/main/resources` project dir a `log4j2.properties` file like:
["source","properties",subs="attributes"]
--------------------------------------------------
appender.console.type = Console
appender.console.name = console
appender.console.layout.type = PatternLayout
appender.console.layout.pattern = [%d{ISO8601}][%-5p][%-25c] %marker%m%n
rootLogger.level = info
rootLogger.appenderRef.console.ref = console
--------------------------------------------------
=== Using another Logger
If you want to use another logger than Log4j 2, you can use http://www.slf4j.org/[SLF4J] bridge to do that:
["source","xml",subs="attributes"]
--------------------------------------------------
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-to-slf4j</artifactId>
<version>2.11.1</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.24</version>
</dependency>
--------------------------------------------------
http://www.slf4j.org/manual.html[This page] lists implementations you can use. Pick your favorite logger
and add it as a dependency. As an example, we will use the `slf4j-simple` logger:
["source","xml",subs="attributes"]
--------------------------------------------------
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.7.21</version>
</dependency>
--------------------------------------------------
:client-tests: {docdir}/../../server/src/internalClusterTest/java/org/elasticsearch/client/documentation
:hlrc-tests: {docdir}/../../client/rest-high-level/src/test/java/org/elasticsearch/client
:client-reindex-tests: {docdir}/../../modules/reindex/src/test/java/org/elasticsearch/client/documentation
include::client.asciidoc[]
include::docs.asciidoc[]
include::search.asciidoc[]
include::aggs.asciidoc[]
include::query-dsl.asciidoc[]
include::admin/index.asciidoc[]