Signed-off-by: NGao Hongtao <hanahmily@gmail.com>

* Keep latest index always present.
  * Avoid TTL timer to remove latest index
  * Create a latest index even without any data.
Signed-off-by: NGao Hongtao <hanahmily@gmail.com>

* go2sky e2e
Co-authored-by: Nkezhenxu94 <kezhenxu94@apache.org>

* Fix bug that the agent heart beats too frequently
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

Co-authored-by: NMrproliu <mrproliu@lagou.com>

* Set up restrict length rules for service, instance and endpoint

* Adjust two env names.

Here are the list of changes we made in this pull request. Top 3 are the principle changes, others are following these principles.
1. New agent and mesh report protocol. 
2. New agent header protocol. 
3. Service register, instance register and network address register have been removed permanently.
4. Service traffic, instance traffic and network alias metrics are added to replace the service, instance and network address inventory.
5. Register process has been removed.
6. Metrics stream process supports insert only mode, especially for traffic entities.
7. Metrics stream process supports no-downsampling mode for traffic entities and network alias.
8. Remove all register mechanism and cache in the java agent.
9. Remove MONTH step in GraphQL query.
10. Update UI to remove MONTH step query, the max query range is 60 days now.
11. Simplify the TTL to metrics and record. And the unit has been formatted in Day unit. No specific TTL for ElasticSearch storage.
12. Buffer mechanism of trace receiver and mesh receiver has been removed due to no register.
13. New service id, instance id and endpoint id rules, including service relation, instance relation and endpoint relation id rules.
14. Java agent support `keep tracing` mode, meaning, agent generating tracing context even the backend is unconnected/unavailable.
15. Plugin test tool up to date, in order to support new protocol.
16. Plugin tests expected data files updated.
17. E2E tests updated.
18. Telemetry of Grafana config has been merged into one.
19. Documentation updates.
20. [TBD] InfluxDB storage implementation is not available, need @dmsolr to fix later, in order to reduce the master change block by this PR.

spelling fix

* Set the endpoint name length to 150, to keep safe and avoid over-length.

* Set endpointNameMaxLength in the application.yml

* Fix a mischange.

* Correct the endpoint name length control logic
Co-authored-by: Nkezhenxu94 <kezhenxu94@apache.org>

MEDIUMTEXT in H2 is CLOB in JDBC type, and casting it to `String` causes `ClassCastException`

- Add length definition with reasonable default value.
- #content of @Column has been renamed to storageOnly . I add this to many fields as they are not being query in any case.
- Merge H2 and MySQL columntype mapping back to consistent.
- Remove @IDColumn.
- Support @QueryUnifiedIndex.
- Refactor the MySQL and H2 installers to use @Column and @QueryUnifiedIndex definitions to create indices automatically. But the index naming rule has been changed to entityseqIDX. seq is the Increment Interger for every entity.
- Support @MetricsExtension and insertOnly in the MetricsPersistentWorker worker.
- Optimize MetricsStreamProcessor

* Escape '/' on InfluxDB

* fix checkstyle

* Finish step one, source and entity changed.

* Step 2, finish the basic and core DAO changes.

* Step 3. Change all source codes of backend, and make project compiling successfully.

* Make startup successful and persistence works.

* Fix dead codes in the MySQLTableInstaller.

* Fix mischange.

* Fix MySQL storage bootstrap error.

* Rollback dependency change.

* Simply enable tailing logs from container no mater it's in CI or not

* Fix segment table issue.

* Fix MySQL Instanller.

* Support Influxdb implementation of new endpoint traffic.

* Set and modify timeout to 90mins

* Remove unnecessary entity in the EndpointTraffic.

* Fix wrong entity builder and make name more clear.

* Fix 2 equal methods bug.

* Fix InfluxDB identifier(name) conflict issue.

* Fix endpoint topology query, endpoint id should be changed as a string.

* Fix a missing change.

* Fix a wrong commit.

* Column name can't be changed, due to it affect the hybrid metadb(h2/mysql) query, change it explicitly with double quotation marks.

* Fix formats.

* Remove endpoint/operation register from the agent. and change the plugin tests(without local tests). operationId relation codes have been removed from agent too.

* Try to fix the hytrix case.

* Fix 3 cases.

* Try to fix cases.

* Fix 2.

* Fix one.

* Fix the serviceId type mis-change.

* Fix int query

* Fix hystrix case.

* Fix a case.

* Fix EndpointCallRelationDispatcher set the source/dest endpoint without id encoding.

* Update documentation and add 2 test cases.
Co-authored-by: Nkezhenxu94 <kezhenxu94@163.com>

* fix #4539, add PHP to the query protocol

* Add PHP module support to e2e test

* Add PHP e2e test into the CI control file

* Remove networks aliases

* Add PHP module support to e2e test

* Add e2e.php.yaml

* Locked version

* Add 200000 microsecond sleep in E2E-PHP
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>
Co-authored-by: Nkezhenxu94 <kezhenxu94@apache.org>

* up ui

* up ui

* fix elasticsearch-5.x-plugin on es6.x TransportClient error, Found class org.elasticsearch.common.transport.TransportAddress, but interface was expected
up elasticsearch-6.x-plugin support TransportClient

* fix elasticsearch-5.x-plugin on es6.x TransportClient error, Found class org.elasticsearch.common.transport.TransportAddress, but interface was expected
up elasticsearch-6.x-plugin support TransportClient

* fix elasticsearch-5.x-plugin on es6.x TransportClient error, Found class org.elasticsearch.common.transport.TransportAddress, but interface was expected
up elasticsearch-6.x-plugin support TransportClient

* const string witnesses
add some unit test
recommended to change ; to ,

* const string witnesses
add some unit test
recommended to change ; to ,

* up ES6.X test-plugin

* up es6.x test-plugin

* up es6.x test-plugin

* up es6.x test-plugin

* add DeleteIndexRequest

* up es6.x test-plugin

* remove TransportCaseController.java

* fix TransportActionNodeProxyExecuteMethodsInterceptorTest
Co-authored-by: Nyi.liang <yi.liang@zhangmen.cn>
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>
Co-authored-by: N梁懿 <liangyi@xforceplus.com>
Co-authored-by: Naderm <394102339@qq.com>

Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

Motivation:

Guarantee that the agent supports JDK13 and JDK14

Modifications:

Add JDK13 and JDK14 to build matrix

Result:

Build with JDK13 and JDK14

* Update powered-by.md

* Update powered-by.md

Change order.

* Update powered-by.md

Change to official company name.
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

Co-authored-by: NMrproliu <mrproliu@lagou.com>
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>
Co-authored-by: Nkezhenxu94 <kezhenxu94@apache.org>

Modify Eclipse and IDEA  steps

* Add missing `@Repeatable` to `@Tag` annotation

* Remove some verified minor versions to speed up plugin tests

* Update How-to-release.md

* Update How-to-release.md
Co-authored-by: Nkezhenxu94 <kezhenxu94@apache.org>