Merge pull request #1225 from jlongtine/engine-writefile
engine.#Writefile
This commit is contained in:
commit
e8843b918e
@ -99,3 +99,13 @@ _No input._
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### engine.#Service Outputs
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_No output._
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## engine.#WriteFile
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### engine.#WriteFile Inputs
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_No input._
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### engine.#WriteFile Outputs
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_No output._
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89
plan/task/writefile.go
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89
plan/task/writefile.go
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@ -0,0 +1,89 @@
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package task
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import (
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"context"
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"fmt"
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"io/fs"
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"cuelang.org/go/cue"
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"github.com/moby/buildkit/client/llb"
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"go.dagger.io/dagger/compiler"
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"go.dagger.io/dagger/plancontext"
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"go.dagger.io/dagger/solver"
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)
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func init() {
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Register("WriteFile", func() Task { return &writeFileTask{} })
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}
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type writeFileTask struct {
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}
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func (t *writeFileTask) Run(ctx context.Context, pctx *plancontext.Context, s solver.Solver, v *compiler.Value) (*compiler.Value, error) {
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var contents []byte
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var err error
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path, err := v.Lookup("path").String()
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if err != nil {
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return nil, err
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}
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switch kind := v.Lookup("contents").Kind(); kind {
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// TODO: support bytes?
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// case cue.BytesKind:
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// contents, err = v.Lookup("contents").Bytes()
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case cue.StringKind:
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var str string
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str, err = v.Lookup("contents").String()
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if err == nil {
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contents = []byte(str)
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}
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case cue.BottomKind:
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err = fmt.Errorf("%s: WriteFile contents is not set", path)
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default:
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err = fmt.Errorf("%s: unhandled data type in WriteFile: %s", path, kind)
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}
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if err != nil {
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return nil, err
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}
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mode, err := v.Lookup("mode").Int64()
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if err != nil {
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return nil, err
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}
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input, err := pctx.FS.FromValue(v.Lookup("input"))
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if err != nil {
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return nil, err
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}
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inputState, err := input.Result().ToState()
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if err != nil {
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return nil, err
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}
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outputState := inputState.File(
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llb.Mkfile(path, fs.FileMode(mode), contents),
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withCustomName(v, "WriteFile %s", path),
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)
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result, err := s.Solve(ctx, outputState, pctx.Platform.Get())
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if err != nil {
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return nil, err
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}
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fs := pctx.FS.New(result)
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output := compiler.NewValue()
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if err := output.FillPath(cue.ParsePath("output"), fs.MarshalCUE()); err != nil {
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return nil, err
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}
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return output, nil
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}
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@ -8,3 +8,13 @@ package engine
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contents: string
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output: #FS
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}
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#WriteFile: {
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_type: "WriteFile"
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input: #FS
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path: string
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contents: string
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mode: int
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output: #FS
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}
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@ -12,4 +12,15 @@ setup() {
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@test "task: #ReadFile" {
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cd "$TESTDIR"/tasks/readfile
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dagger --europa up
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}
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@test "task: #WriteFile" {
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cd "$TESTDIR"/tasks/writefile
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dagger --europa up ./writefile.cue
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}
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@test "task: #WriteFile failure: different contents" {
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cd "$TESTDIR"/tasks/writefile
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run dagger --europa up ./writefile_failure_diff_contents.cue
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assert_failure
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}
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1
tests/tasks/writefile/cue.mod/module.cue
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1
tests/tasks/writefile/cue.mod/module.cue
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@ -0,0 +1 @@
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module: ""
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3
tests/tasks/writefile/cue.mod/pkg/.gitignore
vendored
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3
tests/tasks/writefile/cue.mod/pkg/.gitignore
vendored
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@ -0,0 +1,3 @@
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# generated by dagger
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alpha.dagger.io
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dagger.lock
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26
tests/tasks/writefile/writefile.cue
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26
tests/tasks/writefile/writefile.cue
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@ -0,0 +1,26 @@
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package main
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import (
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"alpha.dagger.io/europa/dagger/engine"
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)
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engine.#Plan & {
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actions: {
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pull: engine.#Pull & {
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source: "alpine:3.15.0@sha256:e7d88de73db3d3fd9b2d63aa7f447a10fd0220b7cbf39803c803f2af9ba256b3"
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}
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write: engine.#WriteFile & {
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input: pull.output
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path: "/testing"
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contents: "1,2,3"
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mode: 700
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}
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readfile: engine.#ReadFile & {
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input: write.output
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path: "/testing"
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} & {
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// assert result
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contents: "1,2,3"
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}
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}
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}
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26
tests/tasks/writefile/writefile_failure_diff_contents.cue
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26
tests/tasks/writefile/writefile_failure_diff_contents.cue
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@ -0,0 +1,26 @@
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package main
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import (
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"alpha.dagger.io/europa/dagger/engine"
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)
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engine.#Plan & {
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actions: {
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pull: engine.#Pull & {
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source: "alpine:3.15.0@sha256:e7d88de73db3d3fd9b2d63aa7f447a10fd0220b7cbf39803c803f2af9ba256b3"
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}
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write: engine.#WriteFile & {
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input: pull.output
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path: "/testing"
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contents: "1,2,3,4"
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mode: 700
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}
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readfile: engine.#ReadFile & {
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input: write.output
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path: "/testing"
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} & {
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// assert result
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contents: "1,2,3"
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}
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}
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}
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