1.0Performance: Add L1 aggregation flush period, which reduces the CPU load and helps young GC.
2. Replace do not direct send after the first aggregation to reduce the network #6400.
3. Enhance the DataCarrier to notify the consumer in no enqueue event in short term.
4. L1 aggregation flush period still works even no further metrics generated, powered by <3>
5. Fix gRPC remote client OOM. The concurrency control mechanism failed.
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.
Motivation:
According the feedback from the community, the e2e tests are hard for
them to understand and get them started, so this pull request aims to
rewrite the e2e tests with some improvements:
- debuggable locally, now you can run every individual case directly
inside the IDE, just like running a plain unit test.
- same functionalities of multiple counterparts share the same codes,
cases like different storages and cluster coordinators share the same
codes, easy to add more similar cases.
- the "end" now extends to the Doccker images, meaning that some bugs
like #4483 and #4471 can be more easily and early to be discovered.
- codes style and license headers are checked
Modifications:
- adopt jupeter (a.k.a junit 5), testcontainers as the new test
framework, all containers are orchestrated by docker-compose.yml,
well-known technology that developers should be familiar with.
- rewrite all test cases and verify them.
- reorganize the workflows in GitHub Actions.
Result:
- new e2e test should be easy to add.
- closes https://github.com/apache/skywalking/issues/4472
Motivation:
Review code styles with some bots automatically.
Modifications:
Set up ReviewDog in GitHub Action to review code style.
Add more check rules to checkstyle plugin.
Result:
Obvious code styles can be reviewed and commented automatically.
* Update JDK compiling level to 8, and remove zip dist.
* Exclude annotation and shade API.
* Fix more exclusion.
* 1. Update grava and gson 2. Fix compile issue. 3. Keep protoc and maven plugin in old version. Some incompatible of 3rd party grpc proto.
* Fix dependency conflicts, license and notice issue, and dependency check script issue
Co-authored-by: kezhenxu94 <kezhenxu94@163.com>
Oliver
吴晟 Wu Sheng
wankai123
kezhenxu94
zifeihan
Kirs
Stephen Ni
lijial
zcai2
Evan
Jared Tan
Daming
Xin,Zhang
zhang-wei
Kdump
Lu Jiajing
李文广
Gao Hongtao
Brandon Fergerson
John Niang