golang
Installation
Entrypoint
Types
Golang

golang

A collection of functions for building, formatting, testing, linting and scanning
your Go project for vulnerabilities.

Installation

dagger install github.com/purpleclay/daggerverse/golang@v0.3.0

Entrypoint

Return Type

Golang !

Arguments

Name	Type	Description
base	Container	A custom base image containing an installation of golang. If no image is provided, one is resolved based on the Go version defined within the projects go.mod file. The official Go image is pulled from DockerHub using either the bullseye (< 1.20) or bookworm (> 1.20) variants. `NOTE:` Any pre-existing entrypoint will be removed, in favour of raw `go` commands
src	Directory !	a path to a directory containing the source code

Example

dagger -m github.com/purpleclay/daggerverse/golang@1190a20046659b68001a6e16cd5c12fab960b216 call \
 --src DIR_PATH

func (m *myModule) example(src *Directory) *Golang  {
	return dag.
			Golang(src)
}

@function
def example(src: dagger.Directory) -> dag.Golang:
	return (
		dag.golang(src)
	)

@func()
example(src: Directory): Golang {
	return dag
		.golang(src)
}

Types

Golang 🔗

Golang dagger module

modVersion() 🔗

Echoes the version of go defined within a projects go.mod file. It expects the go.mod file to be located within the root of the project

dagger call -m github.com/purpleclay/daggerverse/golang --src . mod-version

Return Type

String !

Example

dagger -m github.com/purpleclay/daggerverse/golang@1190a20046659b68001a6e16cd5c12fab960b216 call \
 --src DIR_PATH mod-version

func (m *myModule) example(ctx context.Context, src *Directory) string  {
	return dag.
			Golang(src).
			ModVersion(ctx)
}

@function
async def example(src: dagger.Directory) -> str:
	return await (
		dag.golang(src)
		.mod_version()
	)

@func()
async example(src: Directory): Promise<string> {
	return dag
		.golang(src)
		.modVersion()
}

build() 🔗

Build a static binary from a Go project using the provided configuration. A directory is returned containing the build binary.

Build a binary from a main.go file located at the project root: dagger call -m github.com/purpleclay/daggerverse/golang --src . build

Build a binary targeting a custom os and architecture: dagger call -m github.com/purpleclay/daggerverse/golang --src . build --os linux --arch arm64

Build a binary from a main.go file located within a cmd folder: dagger call -m github.com/purpleclay/daggerverse/golang --src . build --main cmd/example/main.go --out example

Return Type

Directory !

Arguments

Name	Type	Default Value	Description
main	String	-	the path to the main.go file of the project
out	String	-	the name of the built binary
os	String	-	the target operating system
arch	String	-	the target architecture
ldflags	[String ! ]	["-s", "-w"]	flags to configure the linking during a build, by default sets flags for generating a release binary

Example

dagger -m github.com/purpleclay/daggerverse/golang@1190a20046659b68001a6e16cd5c12fab960b216 call \
 --src DIR_PATH build

func (m *myModule) example(src *Directory) *Directory  {
	return dag.
			Golang(src).
			Build()
}

@function
def example(src: dagger.Directory) -> dagger.Directory:
	return (
		dag.golang(src)
		.build()
	)

@func()
example(src: Directory): Directory {
	return dag
		.golang(src)
		.build()
}

test() 🔗

Execute tests defined within the target project, ignores benchmarks by default

dagger call -m github.com/purpleclay/daggerverse/golang --src . test

Execute only short running tests ensuring they are shuffled: dagger call -m github.com/purpleclay/daggerverse/golang --src . test --short --shuffle

Execute a single test: `dagger call -m github.com/purpleclay/daggerverse/golang –src . test –run ‘TestSingleFeature’

Return Type

String !

Arguments

Name	Type	Default Value	Description
short	Boolean	true	if only short running tests should be executed
shuffle	Boolean	true	if the tests should be executed out of order
run	String	-	run select tests only, defined using a regex
skip	String	-	skip select tests, defined using a regex

Example

dagger -m github.com/purpleclay/daggerverse/golang@1190a20046659b68001a6e16cd5c12fab960b216 call \
 --src DIR_PATH test

func (m *myModule) example(ctx context.Context, src *Directory) string  {
	return dag.
			Golang(src).
			Test(ctx)
}

@function
async def example(src: dagger.Directory) -> str:
	return await (
		dag.golang(src)
		.test()
	)

@func()
async example(src: Directory): Promise<string> {
	return dag
		.golang(src)
		.test()
}

bench() 🔗

Execute benchmarks defined within the target project, excludes all other tests

dagger call -m github.com/purpleclay/daggerverse/golang --src . bench

Return Type

String !

Arguments

Name	Type	Default Value	Description
memory	Boolean	true	print memory allocation statistics for benchmarks
time	String	"5s"	the time.Duration each benchmark should run for

Example

dagger -m github.com/purpleclay/daggerverse/golang@1190a20046659b68001a6e16cd5c12fab960b216 call \
 --src DIR_PATH bench

func (m *myModule) example(ctx context.Context, src *Directory) string  {
	return dag.
			Golang(src).
			Bench(ctx)
}

@function
async def example(src: dagger.Directory) -> str:
	return await (
		dag.golang(src)
		.bench()
	)

@func()
async example(src: Directory): Promise<string> {
	return dag
		.golang(src)
		.bench()
}

vulncheck() 🔗

Scans the target project for vulnerabilities using govulncheck

dagger call -m github.com/purpleclay/daggerverse/golang --src . vulncheck

Return Type

String !

Example

dagger -m github.com/purpleclay/daggerverse/golang@1190a20046659b68001a6e16cd5c12fab960b216 call \
 --src DIR_PATH vulncheck

func (m *myModule) example(ctx context.Context, src *Directory) string  {
	return dag.
			Golang(src).
			Vulncheck(ctx)
}

@function
async def example(src: dagger.Directory) -> str:
	return await (
		dag.golang(src)
		.vulncheck()
	)

@func()
async example(src: Directory): Promise<string> {
	return dag
		.golang(src)
		.vulncheck()
}

lint() 🔗

Lint the target project using golangci-lint

dagger call -m github.com/purpleclay/daggerverse/golang --src . lint

Return Type

String !

Arguments

Name	Type	Default Value	Description
format	String	"colored-line-number"	the type of report that should be generated

Example

dagger -m github.com/purpleclay/daggerverse/golang@1190a20046659b68001a6e16cd5c12fab960b216 call \
 --src DIR_PATH lint

func (m *myModule) example(ctx context.Context, src *Directory) string  {
	return dag.
			Golang(src).
			Lint(ctx)
}

@function
async def example(src: dagger.Directory) -> str:
	return await (
		dag.golang(src)
		.lint()
	)

@func()
async example(src: Directory): Promise<string> {
	return dag
		.golang(src)
		.lint()
}

format() 🔗

Format the source code within a target project using gofumpt. Formatted code must be copied back onto the host.

dagger call -m github.com/purpleclay/daggerverse/golang --src . format export --path .

Return Type

Directory !

Example

dagger -m github.com/purpleclay/daggerverse/golang@1190a20046659b68001a6e16cd5c12fab960b216 call \
 --src DIR_PATH format

func (m *myModule) example(src *Directory) *Directory  {
	return dag.
			Golang(src).
			Format()
}

@function
def example(src: dagger.Directory) -> dagger.Directory:
	return (
		dag.golang(src)
		.format()
	)

@func()
example(src: Directory): Directory {
	return dag
		.golang(src)
		.format()
}