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@v0.5.0

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.
src	Directory !	a path to a directory containing the source code

Example

dagger -m github.com/purpleclay/daggerverse/golang@9f87a8c41f0edc2766602b75a5c52a681001d5b5 call \
 --base IMAGE:TAG --src DIR_PATH

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

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

@func()
example(base: Container, src: Directory): Golang {
	return dag
		.golang(base, 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

Return Type

String !

Example

dagger -m github.com/purpleclay/daggerverse/golang@9f87a8c41f0edc2766602b75a5c52a681001d5b5 call \
 --base IMAGE:TAG --src DIR_PATH mod-version

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

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

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

withPrivate() 🔗

Enable private Go module support by dynamically constructing a .netrc auto-login configuration file. Each call will append a new auto-login configuration

Return Type

Golang !

Arguments

Name	Type	Default Value	Description
machine	String !	-	the remote machine name
username	Secret !	-	a user on the remote machine that can login
password	Secret !	-	a token (or password) used to login into a remote machine by the identified user
modules	[String ! ] !	-	a list of Go module paths that will be treated as private by Go through the GOPRIVATE environment variable

Example

dagger -m github.com/purpleclay/daggerverse/golang@9f87a8c41f0edc2766602b75a5c52a681001d5b5 call \
 --base IMAGE:TAG --src DIR_PATH with-private --machine string --username env:MYSECRET --password env:MYSECRET --modules string1 --modules string2

func (m *myModule) example(base *Container, src *Directory, machine string, username *Secret, password *Secret, modules []string) *Golang  {
	return dag.
			Golang(base, src).
			WithPrivate(machine, username, password, modules)
}

@function
def example(base: dagger.Container, src: dagger.Directory, machine: str, username: dagger.Secret, password: dagger.Secret, modules: List[str]) -> dag.Golang:
	return (
		dag.golang(base, src)
		.with_private(machine, username, password, modules)
	)

@func()
example(base: Container, src: Directory, machine: string, username: Secret, password: Secret, modules: string[]): Golang {
	return dag
		.golang(base, src)
		.withPrivate(machine, username, password, modules)
}

withPrivateLoad() 🔗

Enable private Go module support by loading an existing .netrc auto-login configuration file. Each call will append a new auto-login configuration

Return Type

Golang !

Arguments

Name	Type	Default Value	Description
cfg	File !	-	a path to a .netrc auto-login configuration file
modules	[String ! ] !	-	a list of Go module paths that will be treated as private by Go through the GOPRIVATE environment variable

Example

dagger -m github.com/purpleclay/daggerverse/golang@9f87a8c41f0edc2766602b75a5c52a681001d5b5 call \
 --base IMAGE:TAG --src DIR_PATH with-private-load --cfg file:path --modules string1 --modules string2

func (m *myModule) example(base *Container, src *Directory, cfg *File, modules []string) *Golang  {
	return dag.
			Golang(base, src).
			WithPrivateLoad(cfg, modules)
}

@function
def example(base: dagger.Container, src: dagger.Directory, cfg: dagger.File, modules: List[str]) -> dag.Golang:
	return (
		dag.golang(base, src)
		.with_private_load(cfg, modules)
	)

@func()
example(base: Container, src: Directory, cfg: File, modules: string[]): Golang {
	return dag
		.golang(base, src)
		.withPrivateLoad(cfg, modules)
}

build() 🔗

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

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@9f87a8c41f0edc2766602b75a5c52a681001d5b5 call \
 --base IMAGE:TAG --src DIR_PATH build

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

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

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

test() 🔗

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

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@9f87a8c41f0edc2766602b75a5c52a681001d5b5 call \
 --base IMAGE:TAG --src DIR_PATH test

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

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

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

bench() 🔗

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

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@9f87a8c41f0edc2766602b75a5c52a681001d5b5 call \
 --base IMAGE:TAG --src DIR_PATH bench

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

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

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

vulncheck() 🔗

Scans the target project for vulnerabilities using govulncheck

Return Type

String !

Example

dagger -m github.com/purpleclay/daggerverse/golang@9f87a8c41f0edc2766602b75a5c52a681001d5b5 call \
 --base IMAGE:TAG --src DIR_PATH vulncheck

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

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

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

lint() 🔗

Lint the target project using golangci-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@9f87a8c41f0edc2766602b75a5c52a681001d5b5 call \
 --base IMAGE:TAG --src DIR_PATH lint

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

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

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

format() 🔗

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

Return Type

Directory !

Example

dagger -m github.com/purpleclay/daggerverse/golang@9f87a8c41f0edc2766602b75a5c52a681001d5b5 call \
 --base IMAGE:TAG --src DIR_PATH format

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

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

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