[New article]: Polyglot environment variables

[sebastienros]

This PR introduces new environment variables for referenced services and/or endpoints. I am not sure this deserves a specific article but we might want to update existing samples, at least the polyglot ones, such that these are used instead of .NET Service Discovery ones like services__myapi_https__0.

Most notably:

var projectA = builder.AddProject<ProjectA>("projecta");
var projectB = builder.AddProject<ProjectB>("b").WithReference(projectA);

Will generate the ENVS "PROJECTA_HTTP" and "PROJECTA_HTTPS", i.e. a value for each endpoint, with {RESOURCENAME}_{ENDPOINTNAME}".

var projectA = builder.AddProject<ProjectA>("projecta");
var projectB = builder.AddProject<ProjectB>("b").WithReference(projectA, "custom");

Will generate the ENVS "PROJECTA_HTTP" and "PROJECTA_HTTPS", i.e. a value for each endpoint, with {RESOURCENAME}_{ENDPOINTNAME}".

To get a specific endpoint and a specific ENV:

var projectA = builder.AddProject<ProjectA>("projecta");
var projectB = builder.AddProject<ProjectB>("b").WithEnvironment("PROJECTA_URL", projectA.GetEndpoint("https"));

Will generate an ENV "PROJECTA_URL".

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Associated WorkItem - 500333

[davidfowl]

I wouldn't call it that, but yes 😄. Connection information?

[sebastienros]

Yeah, polyglot is internal keyword.

[IEvangelist]

Is this for v13?

[davidfowl]

Yes