*: Upgrade to go 1.16 && remove deprecated io/ioutil

[TennyZhuang]

What problem does this PR solve?

Problem Summary:

Upgrade to go 1.16

And Deprecation of io/ioutil

What is changed and how it works?

How it Works:

fastmod --accept-all -e go "ioutil\.WriteFile" "os.WriteFile"
fastmod --accept-all -e go "ioutil\.TempFile" "os.CreateTemp"
fastmod --accept-all -e go "ioutil\.TempDir" "os.MkdirTemp"
fastmod --accept-all -e go "ioutil\.ReadFile" "os.ReadFile"
fastmod --accept-all -e go "ioutil\.ReadAll" "io.ReadAll"
fastmod --accept-all -e go "ioutil\.ReadDir" "os.ReadDir"
fastmod --accept-all -e go "ioutil\.NopCloser" "io.NopCloser"
fastmod --accept-all -e go "ioutil\.Discard" "io.Discard"

goimports -w .

And a little manual fix in slow_query.go getAllFiles

Related changes

Check List

Tests

• Unit test

Side effects

Release note

• No release note

[ti-srebot]

No release note, Please follow https://github.com/pingcap/community/blob/master/contributors/release-note-checker.md

[tisonkun]

ref #22198

[tisonkun]

@TennyZhuang it seems go mod tidy generated a different go.sum file. Please resolve diff and push updates.

[purelind]

/run-build

[bb7133]

/rebuild

[bb7133]

/run-all-tests

[zhouqiang-cl]

/run-all-tests

[zhouqiang-cl]

/run-e2e-test

[zhouqiang-cl]

/run-unit-tests

[bb7133]

Hi @TennyZhuang , we've updated the plugin codes, now the build is fine, thanks for your efforts.

[ti-chi-bot]

@tisonkun: Thanks for your review. The bot only counts /lgtm from reviewers and higher roles in list, but you're still welcome to leave your comments.

In response to this:

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[tisonkun]

/cc @bb7133 @XuHuaiyu

[zhouqiang-cl]

/merge

[ti-chi-bot]

@zhouqiang-cl: /merge is only allowed for the committers, you can assign this pull request to the committer in list by filling /assign @committer in the comment to help merge this pull request.

In response to this:

/merge

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[morgo]

/merge

[ti-chi-bot]

@morgo: /merge in this pull request requires 2 /lgtm.

In response to this:

/merge

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[morgo]

/LGTM

[zhouqiang-cl]

/run-e2e-test

[bb7133]

/lgtm

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• bb7133
• morgo

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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[bb7133]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 86111ce

[ti-chi-bot]

@TennyZhuang: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[morgo]

/run-unit-test