[close #421] add timelines tool for slow log

[iosmanthus]

Signed-off-by: iosmanthus myosmanthustree@gmail.com

What problem does this PR solve?

close: #421
Increasing the read readability of the slow log, add a timeline to illustrate the slow log process.

What is changed and how it works?

Usage: <main class> [--resolution=<resolution>] [--threshold=<threshold>] <path>
      <path>   The log file to parse
      --width=<width>
               resolution of timelines
      --threshold=<threshold>
               threshold of warning time, in ms

This tool parses the existing logs of client-java and extracts the slow log, then converts them into timelines.
Three arguments are provided:

1. path: the path of the log file.
2. resolution: the maximum bars for a timeline, default is 70.
3. threshold: above the threshold, the timelines print in red, default is 10ms

text:

function: putIfAbsent
start: 22:50:36.364
end: 22:50:37.232
region: {Region[111] ConfVer[33] Version[5] Store[13] KeyRange[key0]:[key1]}
key: key0
================================================================================  total 868ms
================================================================================  868ms callWithRetry tikvpb.Tikv/RawCompareAndSwap
=============                                                                     150ms gRPC tikvpb.Tikv/RawCompareAndSwap
                                                                                  6ms backoff BoTiKVRPC
              =============                                                       151ms gRPC tikvpb.Tikv/RawCompareAndSwap
                            =                                                     16ms backoff BoTiKVRPC
                             =============                                        150ms gRPC tikvpb.Tikv/RawCompareAndSwap
                                           ==                                     26ms backoff BoTiKVRPC
                                             =============                        150ms gRPC tikvpb.Tikv/RawCompareAndSwap
                                                           ======                 68ms backoff BoTiKVRPC
                                                                  =============   150ms gRPC tikvpb.Tikv/RawCompareAndSwap
                                                                                  0ms backoff BoTiKVRPC
                                                                                  0ms backoff BoRegionMiss

Check List for Tests

This PR has been tested by at least one of the following methods:

• Unit test
• Manual test (add detailed scripts or steps below)

[zz-jason]

what's the difference with scripts, what kind of code is expected to be put in scripts and tools respectively?

[iosmanthus]

what's the difference with scripts, what kind of code is expected to be put in scripts and tools respectively?

scripts might be some shell script or python script to build the project, it might be more appropriate to put the tool into tools because it generates something else and it's not a script.

[marsishandsome]

Will this PR changes the release logic?
Before: mvn clean package -DskipTests
After: build tools? release tools binary?

[marsishandsome]

I recommend writing the tool in Java and release in the same tikv-java-client jar, so that users can run the tools directly without another executable binary.

[iosmanthus]

@zz-jason @marsishandsome PTAL

[iosmanthus]

Will this PR changes the release logic? Before: mvn clean package -DskipTests After: build tools? release tools binary?

This tool will not change the release logic, it is a dependent binary tool to parse slow log instead of a library.

[iosmanthus]

/run-all-tests

[iosmanthus]

/run-all-tests release-5.0

[iosmanthus]

/run-all-tests tikv = release-5.0

[iosmanthus]

@zz-jason PTAL

[iosmanthus]

@zz-jason PTAL

[iosmanthus]

@zz-jason PTAL

[iosmanthus]

/run-all-tests

[iosmanthus]

/run-all-tests

[iosmanthus]

@zz-jason @marsishandsome PTAL

[github-actions]

This PR is stale because it has been open 30 days with no activity. Remove the status/stale label or comment or this PR will be closed in 7 days.

[zz-jason]

I'm going to close this PR since it hasn't been updated for a long time. Feel free to reopen it once you wish to advance this PR in the future.