Rename packages

[alanwest]

Packages to rename

The following packages in both the main and the contrib repos should be renamed to better describe what they contain.

Current name	Suggested name	Notes
OpenTelemetry.Extensions.Serilog	OpenTelemetry.Appenders.Serilog	1, 6
OpenTelemetry.Extensions.EventSource	OpenTelemetry.Appenders.EventSource	1, 6
OpenTelemetry.Instrumentation.EventCounters	OpenTelemetry.Shims.EventCounters	1
OpenTelemetry.Extensions.Docker	OpenTelemetry.ResourceDetectors.Container	2
OpenTelemetry.Extensions.Propagators	OpenTelemetry.Propagators	2, 5
OpenTelemetry.Extensions.PersistentStorage.Abstractions	OpenTelemetry.PersistentStorage.Abstractions	2
OpenTelemetry.Extensions.PersistentStorage	OpenTelemetry.PersistentStorage.FileSystem	2
OpenTelemetry.Contrib.Instrumentation.AWS	OpenTelemetry.Instrumentation.AWS	3
OpenTelemetry.Contrib.Extensions.AWSXRay	OpenTelemetry.??.AWSXRay	3
OpenTelemetry.Extensions.AzureMonitor	OpenTelemetry.Samplers.AzureMonitor	3
OpenTelemetry.Extensions	?	4

[1]: A shim is a package that integrates a library with OpenTelemetry - e.g. "I use library xyz to produce [traces | metrics | logs], I need to use a shim package to integrate it with OpenTelemetry".

[2]: The name of an SDK extension package should contain the type of extension it contains - e.g., Exporter, ResourceDetectors, Propagators, etc. We prefer pluralized names, but may consider exceptions to this rule. For example, PersistentStorages sounds wrong. The inspiration for preferring pluralized names comes from the .NET design guidelines for namespace naming.

[3]: The naming of vendor-specific packages should be up to the vendor. However, we should make a suggestion and provide vendors with guidance.

[4]: OpenTelemetry.Extensions is a bit of an odd-ball. It contains a processor for both traces and logs, so should it be named OpenTelemetry.Processors.Something?

[5]: Not sure we can rename OpenTelemetry.Extensions.Propagators since it already has a stable release.

[6]: The initial development of the logging shims is on the main-logs branch. The will probably move to the contrib repo.

Packages to leave alone

(expand me) For reference, this is a list of the remaining packages. If there are packages in this list you think should be renamed, please comment.

Package name
OpenTelemetry
OpenTelemetry.Api
OpenTelemetry.Exporter.Console
OpenTelemetry.Exporter.Geneva
OpenTelemetry.Exporter.InMemory
OpenTelemetry.Exporter.Instana
OpenTelemetry.Exporter.Jaeger
OpenTelemetry.Exporter.OpenTelemetryProtocol
OpenTelemetry.Exporter.Prometheus.AspNetCore
OpenTelemetry.Exporter.Prometheus.HttpListener
OpenTelemetry.Exporter.Stackdriver
OpenTelemetry.Exporter.Zipkin
OpenTelemetry.Exporter.ZPages
OpenTelemetry.Extensions.DependencyInjection
OpenTelemetry.Extensions.Hosting
OpenTelemetry.Instrumentation.AspNet
OpenTelemetry.Instrumentation.AspNet.TelemetryHttpModule
OpenTelemetry.Instrumentation.AspNetCore
OpenTelemetry.Instrumentation.AWSLambda
OpenTelemetry.Instrumentation.ElasticsearchClient
OpenTelemetry.Instrumentation.EntityFrameworkCore
OpenTelemetry.Instrumentation.GrpcCore
OpenTelemetry.Instrumentation.GrpcNetClient
OpenTelemetry.Instrumentation.Hangfire
OpenTelemetry.Instrumentation.Http
OpenTelemetry.Instrumentation.MassTransit
OpenTelemetry.Instrumentation.MySqlData
OpenTelemetry.Instrumentation.Owin
OpenTelemetry.Instrumentation.Process
OpenTelemetry.Instrumentation.Quartz
OpenTelemetry.Instrumentation.Runtime
OpenTelemetry.Instrumentation.SqlClient
OpenTelemetry.Instrumentation.StackExchangeRedis
OpenTelemetry.Instrumentation.Wcf
OpenTelemetry.SemanticConventions
OpenTelemetry.Shims.OpenTracing

[reyang]

Proposal
Shim better describes what the package does for you. I think Shim also describes what the OpenTelemetry.Instrumentation.EventCounters package does. So for example:

OpenTelemetry.Extensions.Serilog becomes OpenTelemetry.Shims.Serilog

+1

[reecebradley]

[1]: A shim is a package that integrates a library with OpenTelemetry - e.g. "I use library xyz to produce [traces | metrics | logs], I need to use a shim package to integrate it with OpenTelemetry".

I agree.

[2]: The name of an SDK extension package should contain the type of extension it contains - e.g., Exporter, ResourceDetector, Propagator, etc. Should they be pluralize or not, i.e., Exporter vs. Exporters?
[3]: The naming of vendor-specific packages should be up to the vendor. However, we should make a suggestion and provide vendors with guidance.

I agrees :-)

If we have a good set of extension points that are commonly done, those names, like Exporters or Shims would be good to document. I always how this made all the packages start to feel cohesive or like, one person authored it. Makes it easier for consumers to navigate all the packages after learning the domain.

[5]: Not sure we can rename OpenTelemetry.Extensions.Propagators since it already has a stable release.

:-(

[CodeBlanch]

@alanwest I could live with "Shim" but I think "Adapter" could also work. In the case of Serilog & EventSource, maybe even "Appender" since the spec has run with that term? 🤷‍♀️

@vishweshbankwar How would you feel about renaming OpenTelemetry.PersistentStorage -> OpenTelemetry.PersistentStorage.FileSystem? Imagine side-by-side with some other implementations...

OpenTelemetry.PersistentStorage.Abstractions
OpenTelemetry.PersistentStorage.FileSystem
OpenTelemetry.PersistentStorage.MessageQueue
OpenTelemetry.PersistentStorage.Database

Not saying we will ever ship those, but I think the convention leads itself to a happy place 😄

[alanwest]

I could live with "Shim" but I think "Adapter" could also work.

I like Adapter or even Bridge. Wasn't a fan of Shims anyways, but chose it because of our existing OpenTelemetry.Shims.OpenTracing package. Though, we could rename that too since we've never shipped a stable version of it.

At least for OpenTracing stuff:

• Go uses the term Bridge
• Java uses the term Shim
• Spec uses the term Shim

Adapter feels familiar in .NET because of DataAdapter

[reyang]

I like Adapter or even Bridge.

"Bridge" is normally used to refer to a bi-directional thing.

Wasn't a fan of Shims anyways, but chose it because of our existing OpenTelemetry.Shims.OpenTracing package. Though, we could rename that too since we've never shipped a stable version of it.

FYI - The spec is using the word "shim" https://github.com/open-telemetry/opentelemetry-specification/blob/094fe9f34bc2fdb9797c4437c6062dcf61760de0/specification/compatibility/opentracing.md.

[alanwest]

The spec is using the word "shim"

And apparently matches wikipedia's definition quite well https://en.wikipedia.org/wiki/Shim_(computing)

[reyang]

The spec is using the word "shim"

And apparently matches wikipedia's definition quite well https://en.wikipedia.org/wiki/Shim_(computing)

IIRC it started as "bridge" then there was a holy war in the spec SIG and folks aligned on the term "shim"...

[vishweshbankwar]

@alanwest I could live with "Shim" but I think "Adapter" could also work. In the case of Serilog & EventSource, maybe even "Appender" since the spec has run with that term? 🤷‍♀️

@vishweshbankwar How would you feel about renaming OpenTelemetry.PersistentStorage -> OpenTelemetry.PersistentStorage.FileSystem? Imagine side-by-side with some other implementations...

OpenTelemetry.PersistentStorage.Abstractions OpenTelemetry.PersistentStorage.FileSystem OpenTelemetry.PersistentStorage.MessageQueue OpenTelemetry.PersistentStorage.Database

Not saying we will ever ship those, but I think the convention leads itself to a happy place 😄

I like it :). It is more clear and leaves room for other implementations to use the prefix.

[alanwest]

I've updated the PR description with a few of the changes discussed.

1. OpenTelemetry.PersistentStorage -> OpenTelemetry.PersistentStorage.FileSystem
2. OpenTelemetry.Shims.Serilog -> OpenTelemetry.Appenders.Serilog
3. OpenTelemetry.Shims.EventSource -> OpenTelemetry.Appenders.EventSource

Instead of the word using the word Shim for the last two these, I liked @CodeBlanch's suggestion of using Appender since this this a term used by the spec. I'd still be ok with Shim, but interested in other folks' thoughts.