* close inputStream safety

* FIX NPE in AlarmService

resolve the Integer overflow,convert the value to Long type

* Change version 

* #1405
Add application id into service metric for the page jump from overview page to service page.

* Fixed test case error.

* #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.

* #1206

1. Support list data type attribute in streaming data.
2. Support multiple service names in segment duration index.

* Fixed the conflict.

* #1206

Add TODO description to notify linjiaqi.

* #1206

Remove @NotNull

* Add Zipkin receiver

Add application id and code into ServiceInfo.

* #1124

Add heart beat time into service name index to filter non-active service name.

* Filter service name by heart beat time when query service name count.

* #1124
1. Add application id to be a query condition of searchService method.
2. Filter service name by given time which calculated by the minute metric TTL setting. ( CurrentTimeStamp - minuteMetricTTL )

* Fixed the auto test failure.

#1124

* #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.

* Fixing #1231. Adding order and status to trace query.

* Fixing 1231. Using enum for traceState and queryOrder

* Incorporating code review suggestions

* Do not get alarm metric for overview and application topology.

* Delete server and service alarm metric only.

Module class rename to ModuleDefine, Module is the JDK9 class. It is conflict with our Module class. (#1168)

* Rename thermodynamic attributes.

* A missing attribute name.

* Refactor tps to cpm

* Change the implementation for new graphql protocol.

* Add aggregate column named duration in GC metric table.

* getGCTrend query finished.

* Change between seconds to between minutes.

* Provide graphQL for Thermodynamic in overview page.

* Finish the Thermodynamic.

* `nodes` should not be null.

* Add initialized java bean for graphql protocol.

* Add license head.

* Fixed bean definition fault.

* Sample of DAO javadoc.

#1064

* Part of UI DAO documents commit.

* Describe all DAO in UI module .

#1064

* The class be tested was deleted.

* Fixed compile failure.

* Fixed CI failure cause of special character.

* gte -> gt
lte -> le

#1064

* Replaced ObjectUtils for Objects methods

* 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.

* empty service testcase

* complete GraphQLHandlerTest

* some test completed

* apm-collector-ui testcase completed

* commons testcase

* some ui module query testcase

* add testcase

* fix some checkStyle issue

* add some null testcase

* remove

* add license

* fix author error

* remove invalid tag @date

* add license which has been missed

* Refactor the collector configuration initialization.

#1047

Add contains point method instead instance of for decide span listener class type.
Transform minute time bucket just once.

#1032

* 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.

* avoid "by zero" exception when all request are error

* update pr about "by zero" exception

* update pr about "by zero" exception add 3 file change

* update pr about "by zero" exception add 1 file change

* update pr about "by zero" exception to solution 1

#1009

* 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.

#998

* [maven-release-plugin] prepare release apm-5.0.0-alpha

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

The time range expression for query the live instance between the start time and end time is incorrect.

* Fixed #918

* 1. Fixed the remote serialize exception bug when there was a null value in string array.
2. Fixed the topology null exception bug when source or target application id is 0.

* Fixed the no data avg throughput in service bug.

* Fixed no parent dependency for service dependency graph #906

* Get the MQ server address id from reference.

* Fixed the remote exception bug when running cluster mode collector.
How: Register remote data entity into remote module.

* Fixed the bug which the end second time bucket calculate result is incorrect.

* Fixed a test case error.