labelset: optimise String() function #590
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Build the output in a `bytes.Buffer` to avoid creating small strings which are passed to `Join`. Use stack arrays to avoid allocations for small buffers, and `AppendQuote`/`AvailableBuffer` avoids allocating and copying in the case that buffer space is sufficient. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
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[](https://renovatebot.com) This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | [github.com/prometheus/common](https://togithub.com/prometheus/common) | `v0.48.0` -> `v0.52.3` | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | --- ### Release Notes <details> <summary>prometheus/common (github.com/prometheus/common)</summary> ### [`v0.52.3`](https://togithub.com/prometheus/common/compare/v0.52.2...v0.52.3) [Compare Source](https://togithub.com/prometheus/common/compare/v0.52.2...v0.52.3) ### [`v0.52.2`](https://togithub.com/prometheus/common/releases/tag/v0.52.2) [Compare Source](https://togithub.com/prometheus/common/compare/v0.51.1...v0.52.2) #### What's Changed - Drop support for Go older than 1.18 by [@​SuperQ](https://togithub.com/SuperQ) in [prometheus/common#612 - fix(protobuf): Correctly decode multi-messages streams by [@​srebhan](https://togithub.com/srebhan) in [prometheus/common#616 - Bump github.com/aws/aws-sdk-go from 1.50.31 to 1.51.11 in /sigv4 by [@​dependabot](https://togithub.com/dependabot) in [prometheus/common#615 #### New Contributors - [@​srebhan](https://togithub.com/srebhan) made their first contribution in [prometheus/common#616 **Full Changelog**: prometheus/common@v0.51.1...v0.52.2 ### [`v0.51.1`](https://togithub.com/prometheus/common/releases/tag/v0.51.1) [Compare Source](https://togithub.com/prometheus/common/compare/v0.51.0...v0.51.1) #### What's Changed - Synchronize common files from prometheus/prometheus by [@​prombot](https://togithub.com/prombot) in [prometheus/common#606 - Synchronize common files from prometheus/prometheus by [@​prombot](https://togithub.com/prombot) in [prometheus/common#609 - Retract v0.50.0 by [@​SuperQ](https://togithub.com/SuperQ) in [prometheus/common#610 **Full Changelog**: prometheus/common@v0.51.0...v0.51.1 ### [`v0.51.0`](https://togithub.com/prometheus/common/releases/tag/v0.51.0) [Compare Source](https://togithub.com/prometheus/common/compare/v0.50.0...v0.51.0) #### What's Changed - Synchronize common files from prometheus/prometheus by [@​prombot](https://togithub.com/prombot) in [prometheus/common#604 - expfmt: Add a way to generate different OpenMetrics Formats by [@​ywwg](https://togithub.com/ywwg) in [prometheus/common#596 - Fix string slice definition for FormatFlagOptions. by [@​gizmoguy](https://togithub.com/gizmoguy) in [prometheus/common#607 - Correct logic in sample naming for counters, add new test by [@​vesari](https://togithub.com/vesari) in [prometheus/common#608 #### New Contributors - [@​gizmoguy](https://togithub.com/gizmoguy) made their first contribution in [prometheus/common#607 **Full Changelog**: prometheus/common@v0.50.0...v0.51.0 ### [`v0.50.0`](https://togithub.com/prometheus/common/releases/tag/v0.50.0) [Compare Source](https://togithub.com/prometheus/common/compare/v0.49.0...v0.50.0) #### What's Changed - Synchronize common files from prometheus/prometheus by [@​prombot](https://togithub.com/prombot) in [prometheus/common#594 - Bump github.com/stretchr/testify from 1.8.4 to 1.9.0 in /sigv4 by [@​dependabot](https://togithub.com/dependabot) in [prometheus/common#593 - Bump github.com/aws/aws-sdk-go from 1.50.27 to 1.50.29 in /sigv4 by [@​dependabot](https://togithub.com/dependabot) in [prometheus/common#592 - Bump github.com/aws/aws-sdk-go from 1.50.29 to 1.50.31 in /sigv4 by [@​dependabot](https://togithub.com/dependabot) in [prometheus/common#595 - Remove unused 'Host' member from HTTPClientConfig by [@​bboreham](https://togithub.com/bboreham) in [prometheus/common#597 - Add OpenMetrics unit support by [@​vesari](https://togithub.com/vesari) in [prometheus/common#544 - Remove deprecated version function by [@​SuperQ](https://togithub.com/SuperQ) in [prometheus/common#591 - Synchronize common files from prometheus/prometheus by [@​prombot](https://togithub.com/prombot) in [prometheus/common#599 - Bump golang.org/x/oauth2 from 0.17.0 to 0.18.0 by [@​dependabot](https://togithub.com/dependabot) in [prometheus/common#600 - Bump google.golang.org/protobuf from 1.32.0 to 1.33.0 by [@​dependabot](https://togithub.com/dependabot) in [prometheus/common#601 **Full Changelog**: prometheus/common@v0.49.0...v0.50.0 ### [`v0.49.0`](https://togithub.com/prometheus/common/releases/tag/v0.49.0) [Compare Source](https://togithub.com/prometheus/common/compare/v0.48.0...v0.49.0) #### What's Changed - Synchronize common files from prometheus/prometheus by [@​prombot](https://togithub.com/prombot) in [prometheus/common#574 - Bump github.com/aws/aws-sdk-go from 1.49.13 to 1.50.8 in /sigv4 by [@​dependabot](https://togithub.com/dependabot) in [prometheus/common#571 - Synchronize common files from prometheus/prometheus by [@​prombot](https://togithub.com/prombot) in [prometheus/common#581 - Update Go by [@​SuperQ](https://togithub.com/SuperQ) in [prometheus/common#588 - Deprecate version.NewCollector by [@​SuperQ](https://togithub.com/SuperQ) in [prometheus/common#579 - Bump github.com/aws/aws-sdk-go from 1.50.8 to 1.50.27 in /sigv4 by [@​dependabot](https://togithub.com/dependabot) in [prometheus/common#587 - Avoid off-spec openmetrics exposition when exemplars have empty labels by [@​orls](https://togithub.com/orls) in [prometheus/common#569 - Bump golang.org/x/oauth2 from 0.16.0 to 0.17.0 by [@​dependabot](https://togithub.com/dependabot) in [prometheus/common#585 - Write created lines when negotiating OpenMetrics by [@​ArthurSens](https://togithub.com/ArthurSens) in [prometheus/common#504 - Upgrade client_model to v.0.6.0 by [@​vesari](https://togithub.com/vesari) in [prometheus/common#589 - http_config: Add host by [@​jkroepke](https://togithub.com/jkroepke) in [prometheus/common#549 - LabelSet: Fix alphabetical sorting for prometheus LabelSet by [@​wasim-nihal](https://togithub.com/wasim-nihal) in [prometheus/common#575 - labelset: optimise String() function by [@​bboreham](https://togithub.com/bboreham) in [prometheus/common#590 #### New Contributors - [@​orls](https://togithub.com/orls) made their first contribution in [prometheus/common#569 - [@​vesari](https://togithub.com/vesari) made their first contribution in [prometheus/common#589 **Full Changelog**: prometheus/common@v0.48.0...v0.49.0 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "on tuesday" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/open-telemetry/opentelemetry-collector). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yMjAuMiIsInVwZGF0ZWRJblZlciI6IjM3LjI2OS4yIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9--> --------- Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com> Co-authored-by: opentelemetrybot <107717825+opentelemetrybot@users.noreply.github.com>
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Build the output in a
bytes.Bufferto avoid creating small strings which are passed toJoin.Use stack arrays to avoid allocations for small buffers, and
AppendQuote/AvailableBufferavoids allocating and copying in the case that buffer space is sufficient.