* add activemq-plugin

* fix  update ActiveMQConsumerInstrumentation Enhance another class

* refacor ActiveMQConsumerInstrumentation code

* support both  topic and queue

* clear the code

* add UnitTest add fix bug

* fix obtain url  bug

* Refactor the ActiveMQProducerInstrumentation code

* fix bug

* fix ConstructorInterceptor BUG

* add Licensed

* Update application.yml

Restore configuration

* Restore configuration

* perfect test

* fix

* fix License

* fix  Project Files

* fix import class in instrumentation

* fix test case

* fix java doc

* fix  Trigger CI

* fix ActiveMQConsumerAndProducerConstructorInterceptorTest

* delete unit test

* fix

* fix

* fix  folder directory problem

* Delete ActiveMQConsumerInstrumentation.java

* #1202

1. Determine the log is enabled for the DEBUG level before printing message.
2. Make the columns initialize to be static attribute.
3. Topology build optimize: Cache query result to avoid repeating queries.

* #1202

Add elasticsearch batch process setting into application.yml.

* #1202

Fixed check style error.

* #1202

Use XContentFactory to build source to insert into elasticsearch.

* Add Zipkin receiver

* Refactor English documents to guide end users.

* sofa rpc integration

* remove unused class and method,add component defination

* only support after sofa rpc 5.4.0

* set sofarpc componentId be 32

* Add document of component library settings and incuating features abstract. (#1185)

* sofa rpc integration

* Update UI licenses (#1189)

* Update UI licenses for beta version

* Update FAQ doc (#1184)

* update faq doc

* update faq

* update faq

* Update readme for beta release. (#1191)

* New english readme.

* New chinese readme.

* Fix #1186 Webapp read timeout config (#1192)

* Updat ui (#1197)

* Change the intercept point of block call way (#1190)

* Change the buired point of block call way

* Support future way and change the operation name of span

* Update screenshot for new release. (#1209)

* remove unused class and method,add component defination

* only support after sofa rpc 5.4.0

* set sofarpc componentId be 32

* sofa rpc integration

* remove unused class and method,add component defination

* only support after sofa rpc 5.4.0

* set sofarpc componentId be 32

* sofa rpc integration

* remove unused class and method,add component defination

* change parent pom version

* remove unused dependency

Block streaming, mandatory persistent cache data to storage then clean the cache data.

* #1263

Separated TTL from minute to minute, hour, day, month.

* 1. Minute metric data ttl change to 90, because of the 1 hour duration condition in UI means 60 minutes.
And i prefer to setting the value up to above 50%.
2. Some description and logging.

#1263

* Add a config time named traceDataTTL for trace data TTL.

#1263

* Fixed the logger english sentence mistake.

Delete buffer directory when collector restart.

* Rename thermodynamic attributes.

* A missing attribute name.

* Add EntityFrameworkCore provider components in component-libraries config

* Fix component-libraries.yml

* Add test case for official component-libraries.yml file

* Fix a missing id in component-libraries.yml

* Add .NET/.NET Core components in component-libraries config

* Use [3000, 4000) for C#/.NET.

* Fixed #1090

1. Move setting the performance from create table action to install action.
2. Add check step that avoid filed type not match the definition when project upgraded.

* Setting namespace by class construct.

* Refactor the old ComponentDefine and ComponentsDefine to be based on file for better extenable.

* Support don't uplink componentId, but componentName in segment.

* Fix CI.

* Move component id exchange logic from SpanDecorator to SpanIdExchanger.

* Fixed the compile error cause of class construct changes.

* Provide short database column name.

* Compile successful

* Attribute name change from source to target.

* Provide highPerformanceMode setting for short column name speciality.

* Fixed a bug that persistent timer started multiple times.
Running about 10 minute, the result of collector performance test is above 1w TPS when using MacBook 2017.

* Refactor the collector configuration initialization.

#1047

* 1. Add the performance collection point.
2. Report formatter.

#1032

* Add a new cache implementation by caffeine.

#1032

* Performance optimization:
Make all the loggers class variable to have the static modifier.

* 1. Add the performance collection point.
2. Report formatter.

#1032

* Add a new cache implementation by caffeine.

#1032

* Because of key issue, system env override can't be supported.

* Override value only in supported types. Int, String, Long, Boolean.

* Provide document for TLS

* Provide direct uplink doc.

* Add namespace document.

* Provide token auth doc.

* Provide setting override document.

* Fix two typo.

* Fix more typos.

* Collector instrument agent.

* Make the agent.jar output to the /agent folder in collector package.

* Try to add metric annotation.

* Change the instrument ways.

* Reformat.

* Finish the agent codes. Wait for @peng-yongsheng 's metric requirements.

* Debug new instrument.

* Fix a detect bug.

* Finish the instrument

* Fix compile issue.

* Add client side token.

* Fix ci.

* Fix most codes of token auth at both sides.

* Add settings in config files.

* Make auth interceptor doesn't throw expcetion.

* Update AuthenticationSimpleChecker.java

* Update AuthenticationActivator.java

* Revert "Update AuthenticationActivator.java"

This reverts commit 0935f18fd6802ab84c12e0609c21ef753ff51be3.

* Merge branch 'feature/token-auth' of https://github.com/apache/incubator-skywalking into feature/token-auth

# Conflicts:
#	apm-collector/apm-collector-agent/agent-grpc/agent-grpc-provider/src/main/java/org/apache/skywalking/apm/collector/agent/grpc/provider/AuthenticationSimpleChecker.java

* Fix Auhentication token works incorrect (#1001)

* Fix Auhentication token works incorrect

* Change way to build GRPC Channel

* Response an empty header when auth fails.

* Support setting override through system.properties and envs.

* Remove test case.

Fix IPMC checks for releasing.

* Finish the prototype of TLS of gRPC between agent and server.

* Fix for rat check.

* Update GRPCChannelManager.java

* Update AgentModuleGRPCProvider.java

* Upgrade netty version (#971)

* Make sure end user can't start gRPC server with and without SSL in the same port.

fixed maven 3.3.9 build issue caused by empty assembly ID on Ubuntu 16.04.2 using OpenJDK 1.8.0_151.

[INFO] Building apm-collector-boot 5.0.0-alpha
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ apm-collector-boot ---
[INFO] Deleting /home/steve/skywalking/incubator-skywalking/apm-collector/apm-collector-boot/target
[INFO] 
[INFO] --- maven-checkstyle-plugin:2.17:check (validate) @ apm-collector-boot ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.492 s
[INFO] Finished at: 2018-02-18T12:05:49-06:00
[INFO] Final Memory: 19M/235M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.17:check (validate) on project apm-collector-boot: Failed during checkstyle configuration: cannot initialize module Header - Unable to find: CHECKSTYLE_HEAD -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException