* plugin code

* NPE FIX

* Add componentId for apache servicecomb.

* Edit according to comment

* add servicecomb

* Edit according to comment

* fix

* set no statement.

* update sql.

* update statement.

* revert threshold.

* Update joda lib to fix UTC 13/14 bug

* Change the dependencies file.

* Refactor DataCarrier, support ArrayBlockingQueueBuffer as the implementation for blocking queue buffer.

* Fix style issue.

* Remove import.

* Remove uesless codes.

* fix component-libraries.yml miss component:rest-high-level-client

* Update component-libraries.yml

Add mapping.

* Add elasticsearch 6.x plugin & elasticsearch 6.x test scenario

* [maven-release-plugin] prepare release v6.5.0

* [maven-release-plugin] prepare for next development iteration

* Update EtcdCoordinator.java

when EtcdCoordinator cannot connect to etcd cluster for a long time, 
the information registered in etcd will expire and refresh() function will not work.

* fix elasticsearch query data window size too large error.

* make query max window size configurable.

* Add register persistent worker latency metrics  #3671

* remove never thrown exception on Time#close()
add panel to mesh-mode-grafana.json

* remove never thrown exception on Time#close()
add panel to mesh-mode-grafana.json

* add plugin netty-socketio https://github.com/mrniko/netty-socketio

* delete create exit span interceptor.

* delete create exit span interceptor testcase.

* delete create exit span interceptor testcase.

* add constructor test unit

* change bind on random port in test case

* reverse upstream master whitespace

* resolve build_id param

* delete health check segment test case

* add ContextManager.isActive check before use activeSpan invoke

* remove unnecessary code and blank line

* Makes the scope of alarm information more semantic.

* update md.

* update md.

* add ruleName in AlarmMsg.

* update md.

* update test case.

* fix coveralls.

* fix coveralls.

* fix ci.

the SourceServiceId set error id which is destServiceId.

* add graphql getServiceInstance instanceUUID field.

* add graphql getServiceInstance instanceUUID field.

* add graphql getServiceInstance instanceUUID field.

* sync query-protocol repo

* add instanceUUID field e2e

* add instanceUUID field e2e

* add instanceUUID field e2e

* add instanceUUID field e2e

* Fix #3402

* Fix unecessary blankline

* Optimize rebuild logic

* Fix checkstyle fail

* Add concurrency test

* Fix text mistakes

* Optimize refresh logic && new test for return clients never change by refresh logic

* Make unit test more clearness

* Add more unit test && fix a bug

* Rename variable && format by skywalking style

* Is it a typo or not?

* delete datasource-settings.properties

* handle 'metadataQueryMaxSize'

* delete DynamicModuleConfig.java

* modify mysql config

* parsing yaml to support the configuration for multiple properties

* delete datasource-settings.properties

* modify doc

* add properties for docker-entrypoint.sh

* add testLoadConfig()

* support ehcache 2.x

* This dependency should be added.

* Fix again.

* Exclude a dependency for test.

* Fix 5 places of using wrong Strings util.

* Support namespace in Nacos cluster/configuration

* Give Nacos default namespace as per config/registry

* code cleanup: remove unnecessary and optimize the function's parameters.

* fix code style.

* Support dynamically configure alarm settings

* Update documentation

* Provide Consul dynamic configuration center implementation

* Add more unit tests

* Fix unit test

* Add more unit tests and remove unused file

* Remove redundant doc

* Upgrade guava version to support higher JDK version

* Adjust license version

* Update doc

* Add pulsar apm plugin.

* Fix check style

* Fix pulsar consumer component define.

* Add pulsar to component-libraries.yml

* Fix error interceptor class.

* Add pulsar to agent support list.

* Add Pulsar to ComponentsDefine and component-libraries.yml

* Move create entry span log of consumer from after method to before method

* Fix send callback issue when exception cause.

* Fix test issues

* Move pulsar plugin to optional plugins

* Add none messages tests for interceptor of producer and consumer.

* Remove unused comments.

* Move pulsar plugin back to the apm-sdk-plugin

* Fix comments

* remove set startTime for entry span(default is set by System.currentTimeMillis)

* Fix comments

* sync ui

* query-server-time-info

* query-server-time-info

* query-server-time-info

* query-server-time-info

* query-server-time-info

* sync skywalking-query-protocol

* sync ui

* sync ui

* sync skywalking-query-protocol

* sync skywalking-query-protocol

* Support timeout configuration in agent and backend.

* Fix CI

* no message

* Update docker-entrypoint.sh

* Set telemtry instance id in etcd and nacos plugins