* 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.

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.

* 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

* 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.

* 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.

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.

2. Delete the history data before the setting that you can find the property name of history_delete_before_days in the application.yml file.

Make agent gRPC to be a collector module.
Make agent jetty to be a collector module.
Make agent stream to be a collector module.

Trace segment compute by http json stream test success.

#537

#537