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pulumi/pkg/codegen/programs.md

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(programgen)=

Programs

Programs may be generated from a program written in a supported source language. This process, often referred to as "programgen", exists primarily to support the pulumi convert command, though it is also used in other places such as language conformance testing. Programgen begins by using a converter plugin to convert from a source language into Pulumi Configuration Language (PCL), before generating a program in the target language from this PCL definition. The PCL-to-target-language conversion is exposed by a language host through two endpoints:

  • , which typically wraps the GenerateProgram Go function in the relevant gen_program.go in this package -- see e.g. gh-file:pulumi#pkg/codegen/nodejs/gen_program.go for NodeJS or gh-file:pulumi#pkg/codegen/python/gen_program.go for Python. GenerateProgram only generates source files (e.g. .ts, .py) etc.
  • , which again typically wraps the GenerateProject Go function (itself typically found alongside GenerateProgram). GenerateProject generates a complete project directory, including both a Pulumi.yaml file and language-appropriate files such as package.json, requirements.txt, etc.