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project: Support Remote Builds (#4161)
* project: Support Remote Builds This change introduces support for using the ACR remote build feature. To use it, add `remoteBuild: true` to the `docker` member of a `service` in `azure.yaml`. Fixes #509
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,166 @@ | ||
| // Copyright (c) Microsoft Corporation. All rights reserved. | ||
| // Licensed under the MIT License. | ||
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| package containerregistry | ||
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| import ( | ||
| "archive/tar" | ||
| "compress/gzip" | ||
| "context" | ||
| "errors" | ||
| "io" | ||
| "os" | ||
| "path/filepath" | ||
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| "github.com/google/uuid" | ||
| "github.com/moby/patternmatcher" | ||
| "github.com/moby/patternmatcher/ignorefile" | ||
| ) | ||
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| // PackRemoteBuildSource creates a tarball of the specified context directory into a temporary file and returns the path to | ||
| // it. It ensures that the dockerfile is present in the tarball and returns the relative path of it in the archive. If the | ||
| // dockerfile is located outside of the context, it is added to the root of the archive with a unique prefix. | ||
| // | ||
| // This tarball may be used as source input for the ACR Remote Build feature. | ||
| // | ||
| // On error, if the archive had been created, the path is returned. The caller should ensure it is removed. | ||
| // | ||
| // A `.dockerignore` file may be used to control what is included in the build context. If a file with the same path as | ||
| // `dockerfile` exists but with an additional `.dockerignore` suffix, it is used as the ignore file. Otherwise, if a | ||
| // `.dockerignore` file exists in the root of the context, it is used. | ||
| // | ||
| // Any folders named `.git` is excluded from the produced archive. | ||
| func PackRemoteBuildSource(ctx context.Context, root string, dockerfile string) (string, string, error) { | ||
| var ignores []string | ||
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| // Like docker, we allow the use of a .dockerignore file to control what is included in the build context. | ||
| candidates := []string{dockerfile + ".dockerignore", filepath.Join(root, ".dockerignore")} | ||
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| for _, candidate := range candidates { | ||
| f, err := os.Open(candidate) | ||
| if err == nil { | ||
| defer f.Close() | ||
| i, err := ignorefile.ReadAll(f) | ||
| if err != nil { | ||
| return "", "", err | ||
| } | ||
| ignores = i | ||
| break | ||
| } else if !errors.Is(err, os.ErrNotExist) { | ||
| return "", "", err | ||
| } | ||
| } | ||
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| contextArchive, err := os.CreateTemp("", "azd-docker-context*.tar.gz") | ||
| if err != nil { | ||
| return "", "", err | ||
| } | ||
| defer contextArchive.Close() | ||
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| gw := gzip.NewWriter(contextArchive) | ||
| defer gw.Close() | ||
| tw := tar.NewWriter(gw) | ||
| defer tw.Close() | ||
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| var dockerfileArchivePath string | ||
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| err = filepath.WalkDir(root, func(path string, d os.DirEntry, err error) error { | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| if d.IsDir() { | ||
| if filepath.Base(path) == ".git" { | ||
| return filepath.SkipDir | ||
| } | ||
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| return nil | ||
| } | ||
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| archivePath := filepath.ToSlash(path[len(root)+1:]) | ||
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| ignore, err := patternmatcher.MatchesOrParentMatches(archivePath, ignores) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| if !ignore { | ||
| info, err := d.Info() | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| hdr, err := tar.FileInfoHeader(info, info.Name()) | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| hdr.Name = archivePath | ||
| if err := tw.WriteHeader(hdr); err != nil { | ||
| return err | ||
| } | ||
|
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| err = func() error { | ||
| f, err := os.Open(path) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer f.Close() | ||
|
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| _, err = io.Copy(tw, f) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| return nil | ||
| }() | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| if path == dockerfile { | ||
| dockerfileArchivePath = archivePath | ||
| } | ||
| } | ||
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| return nil | ||
| }) | ||
|
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| if err != nil { | ||
| return contextArchive.Name(), dockerfileArchivePath, err | ||
| } | ||
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| // If we didn't see the dockerfile in the context, add it to the archive at the root with a unique name. | ||
| if dockerfileArchivePath == "" { | ||
| f, err := os.Open(dockerfile) | ||
| if err != nil { | ||
| return contextArchive.Name(), dockerfileArchivePath, err | ||
| } | ||
| defer f.Close() | ||
| info, err := f.Stat() | ||
| if err != nil { | ||
| return contextArchive.Name(), dockerfileArchivePath, err | ||
| } | ||
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| hdr, err := tar.FileInfoHeader(info, info.Name()) | ||
| if err != nil { | ||
| return contextArchive.Name(), dockerfileArchivePath, err | ||
| } | ||
|
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| uniqueName := uuid.NewString() + "_" + filepath.Base(dockerfile) | ||
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| hdr.Name = uniqueName | ||
| if err := tw.WriteHeader(hdr); err != nil { | ||
| return contextArchive.Name(), dockerfileArchivePath, err | ||
| } | ||
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| _, err = io.Copy(tw, f) | ||
| if err != nil { | ||
| return contextArchive.Name(), dockerfileArchivePath, err | ||
| } | ||
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| dockerfileArchivePath = uniqueName | ||
| } | ||
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| return contextArchive.Name(), dockerfileArchivePath, err | ||
| } |
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