pb

pb is a Protocol Buffers Build tool that manages dependencies and build configuration for protoc.

Flags

• proto-path - Path to .proto to compile using configuration
• config - Path to configuration file to use for compilation

Config

Configuration is provided in HCL with the following top-level configuration fields:

go

go configures protoc dependencies based on the go.mod, and includes any modules that contain *.proto files. Fields are:

• path - Path to the go.mod file. Relative to configuration or absolute
• ignores - array of directory paths to ignore for importing *.proto files

Example

go {
  path = "go.mod"
  ignores = ["internal"]
}

dependency(type, label)

dependencies configures the label dependencies for the provided type at the version provided

The fields are:

• type (label) - The dependency type (either: git or local)
• name (label) - The name and location of the dependency
• version - The tag or commit to use as a version

Example

dependency "git" "github.com/googleapis/googleapis" {
    version = "5518740a67d22a7ad1b0b7656c98211ca5e19307"
}

plugin(name)

plugin configures protoc plugins for code generation. The fields are:

• name - The binary name suffix (i.e. protoc-gen-<name>)
• path - The path to place generated files, relative to the configuration
• rel_path - The path to place generated files, relative to the *.proto file being generated for
• options - Options to provide the protoc plugin

Example

plugin "go" {
    rel_path = "."
    options = {
        "paths": "source_relative",
    }
}

plugin "go-grpc" {
    rel_path = "."
    options = {
        "paths": "source_relative",
    }
}

Full example

go {
	path = "./go.mod"
	ignore = ["vendor", "test", "example", "internal"]
}

dependency "git" "github.com/googleapis/googleapis" {
	version = "5518740a67d22a7ad1b0b7656c98211ca5e19307"
}

plugin "go" {
	rel_path = "."
	options = {
		"paths": "source_relative",
	}
}

plugin "go-grpc" {
	rel_path = "."
	options = {
		"paths": "source_relative",
	}
}

plugin "swagger" {
	path = "./genspec/openapi/"
	options = {
		"allow_merge": "true",
		"merge_file_name": "api"
	}
}

plugin "grpc-gateway" {
	rel_path = "."
	options = {
		"paths": "source_relative",
		"allow_patch_feature": "false",
	}
}

Using with go generate

You can use this tool with go generate in place of using Makefiles for protoc generate, by adding a build-tag to a file alongside the .proto file:

//go:generate go run github.com/enmand/pb -proto-path=path/to/service.proto --config=path/to/proto.hcl
package service