mirror of https://github.com/docker/cli.git
35 lines
1.9 KiB
Markdown
35 lines
1.9 KiB
Markdown
# Deprecation note
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This repository used to contain the [protocol
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buffer](https://developers.google.com/protocol-buffers) code that defined both
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the data model and the exposition format of Prometheus metrics.
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Starting with v2.0.0, the [Prometheus
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server](https://github.com/prometheus/prometheus) does not ingest the
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protobuf-based exposition format anymore. Currently, all but one of the
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[official instrumentation
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libraries](https://prometheus.io/docs/instrumenting/clientlibs/) do not expose
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the protobuf-based exposition format. The [Go instrumentation
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library](https://github.com/prometheus/client_golang), however, has been built
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around the protobuf-based data model. As a byproduct thereof, it is still able
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to expose the protobuf-based exposition format. The Go instrumentation library
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is the only remaining repository within the [Prometheus GitHub
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org](https://github.com/prometheus) directly using the prometheus/client_model
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repository.
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Therefore, formerly existing support for languages other than Go (namely C++,
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Java, Python, Ruby) has been removed from this repository. If you are a 3rd
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party user of those languages, you can go back to [commit
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14fe0d1](https://github.com/prometheus/client_model/commit/14fe0d1b01d4d5fc031dd4bec1823bd3ebbe8016)
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to keep using the old code, or you can consume
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[`metrics.proto`](https://github.com/prometheus/client_model/blob/master/metrics.proto)
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directly with your own protobuf tooling. Note, however, that changes of
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`metrics.proto` after [commit
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14fe0d1](https://github.com/prometheus/client_model/commit/14fe0d1b01d4d5fc031dd4bec1823bd3ebbe8016)
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are solely informed by requirements of the Go instrumentation library and will
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not take into account any requirements of other languages or stability concerns
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for the protobuf-based exposition format.
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Check out the [OpenMetrics project](https://openmetrics.io/) for the future of
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the data model and exposition format used by Prometheus and others.
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