Add CumulativeToDelta Processor

[EddieEldridge]

• Addresses: Include cumulativetodeltaprocessor from contrib #595

• Cumulative To Delta Processor

• My use case of this is that not all vendors support Cumulative metrics and being able to use this processor to convert them to Delta would be incredibly helpful.

[sumo-drosiek]

It should be rather added here (bottom part of snippet):

sumologic-otel-collector/otelcolbuilder/.otelcol-builder.yaml

Lines 34 to 69 in 956e103

	processors:
	# Processors with non-upstreamed changes:
	- gomod: "github.com/SumoLogic/sumologic-otel-collector/pkg/processor/cascadingfilterprocessor v0.0.0-00010101000000-000000000000"
	path: ./../pkg/processor/cascadingfilterprocessor
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/k8sprocessor v0.0.0-00010101000000-000000000000"
	path: ./../pkg/processor/k8sprocessor
	- gomod: "github.com/SumoLogic/sumologic-otel-collector/pkg/processor/sourceprocessor v0.0.0-00010101000000-000000000000"
	path: ./../pkg/processor/sourceprocessor
	- gomod: "github.com/SumoLogic/sumologic-otel-collector/pkg/processor/sumologicschemaprocessor v0.0.0-00010101000000-000000000000"
	path: ./../pkg/processor/sumologicschemaprocessor
	- gomod: "github.com/SumoLogic/sumologic-otel-collector/pkg/processor/sumologicsyslogprocessor v0.0.0-00010101000000-000000000000"
	path: ./../pkg/processor/sumologicsyslogprocessor
	- gomod: "github.com/SumoLogic/sumologic-otel-collector/pkg/processor/metricfrequencyprocessor v0.0.0-00010101000000-000000000000"
	path: ./../pkg/processor/metricfrequencyprocessor
	# Upstream processors:
	# Since include-code was removed we need to manually add all core components that we want to include:
	# https://github.com/open-telemetry/opentelemetry-collector/pull/4616
	- import: go.opentelemetry.io/collector/processor/batchprocessor
	gomod: go.opentelemetry.io/collector v0.51.0
	- import: go.opentelemetry.io/collector/processor/memorylimiterprocessor
	gomod: go.opentelemetry.io/collector v0.51.0
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/attributesprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/filterprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/groupbyattrsprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/groupbytraceprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/metricstransformprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/probabilisticsamplerprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/resourcedetectionprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/resourceprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/routingprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/spanmetricsprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/spanprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/tailsamplingprocessor v0.51.0"

as path: ./../pkg/processor/cumulativetodeltaprocessor refers to this repository code

[sumo-drosiek]

@EddieEldridge thank you for the contribution :)

[EddieEldridge]

It should be rather added here (bottom part of snippet):

sumologic-otel-collector/otelcolbuilder/.otelcol-builder.yaml

Lines 34 to 69 in 956e103

	processors:
	# Processors with non-upstreamed changes:
	- gomod: "github.com/SumoLogic/sumologic-otel-collector/pkg/processor/cascadingfilterprocessor v0.0.0-00010101000000-000000000000"
	path: ./../pkg/processor/cascadingfilterprocessor
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/k8sprocessor v0.0.0-00010101000000-000000000000"
	path: ./../pkg/processor/k8sprocessor
	- gomod: "github.com/SumoLogic/sumologic-otel-collector/pkg/processor/sourceprocessor v0.0.0-00010101000000-000000000000"
	path: ./../pkg/processor/sourceprocessor
	- gomod: "github.com/SumoLogic/sumologic-otel-collector/pkg/processor/sumologicschemaprocessor v0.0.0-00010101000000-000000000000"
	path: ./../pkg/processor/sumologicschemaprocessor
	- gomod: "github.com/SumoLogic/sumologic-otel-collector/pkg/processor/sumologicsyslogprocessor v0.0.0-00010101000000-000000000000"
	path: ./../pkg/processor/sumologicsyslogprocessor
	- gomod: "github.com/SumoLogic/sumologic-otel-collector/pkg/processor/metricfrequencyprocessor v0.0.0-00010101000000-000000000000"
	path: ./../pkg/processor/metricfrequencyprocessor
	# Upstream processors:
	# Since include-code was removed we need to manually add all core components that we want to include:
	# https://github.com/open-telemetry/opentelemetry-collector/pull/4616
	- import: go.opentelemetry.io/collector/processor/batchprocessor
	gomod: go.opentelemetry.io/collector v0.51.0
	- import: go.opentelemetry.io/collector/processor/memorylimiterprocessor
	gomod: go.opentelemetry.io/collector v0.51.0
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/attributesprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/filterprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/groupbyattrsprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/groupbytraceprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/metricstransformprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/probabilisticsamplerprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/resourcedetectionprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/resourceprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/routingprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/spanmetricsprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/spanprocessor v0.51.0"
	- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/tailsamplingprocessor v0.51.0"

as path: ./../pkg/processor/cumulativetodeltaprocessor refers to this repository code

Woops, my bad. Should be fixed now :)

[sumo-drosiek]

Woops, my bad. Should be fixed now :)

We would like to to keep alphabetical order there 😅

[sumo-drosiek]

And please update changelog 🙏

[sumo-drosiek]

and readme

[sumo-drosiek]

@EddieEldridge Crucial part of readme is the table with list of supported components. Unfortunately this is alphabetical as well 😓

I'm personally using this plugin to format table: https://marketplace.visualstudio.com/items?itemName=darkriszty.markdown-table-prettify

[EddieEldridge]

@EddieEldridge Crucial part of readme is the table with list of supported components. Unfortunately this is alphabetical as well 😓

I'm personally using this plugin to format table: https://marketplace.visualstudio.com/items?itemName=darkriszty.markdown-table-prettify

Ok, after much struggle I think I've managed to add that in without messing up the whole table. Thanks for being patient :D

[swiatekm]

@EddieEldridge I think we're good to go after you rebase and resolve conflicts. It'd be best if you squashed it all to a single commit and followed https://www.conventionalcommits.org/en/v1.0.0/ for the message.

[EddieEldridge]

Cool, I think that should be good now. Let me know if there's anything else that needs changing or if you have any nitpicks :)

[swiatekm]

👍