bf62b7ebb7
This change removes the Catalog Service and replaces it with a more simplistic Repositories() method for obtaining a catalog of all repositories. The Repositories method takes a pre-allocated slice and fills it up to the size of the slice and returns the amount filled. The catalog is returned lexicographically and will start being filled from the last entry passed to Repositories(). If there are no more entries to fill, io.EOF will be returned. Signed-off-by: Patrick Devine <patrick.devine@docker.com> Conflicts: registry/client/repository.go registry/handlers/api_test.go
65 lines
1.6 KiB
Go
65 lines
1.6 KiB
Go
package storage
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import (
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"errors"
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"io"
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"path"
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"sort"
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"strings"
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"github.com/docker/distribution/context"
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"github.com/docker/distribution/registry/storage/driver"
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)
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// Returns a list, or partial list, of repositories in the registry.
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// Because it's a quite expensive operation, it should only be used when building up
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// an initial set of repositories.
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func (reg *registry) Repositories(ctx context.Context, repos []string, last string) (n int, err error) {
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var foundRepos []string
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var errVal error
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if len(repos) == 0 {
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return 0, errors.New("no space in slice")
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}
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root, err := defaultPathMapper.path(repositoriesRootPathSpec{})
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if err != nil {
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return 0, err
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}
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// Walk each of the directories in our storage. Unfortunately since there's no
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// guarantee that storage will return files in lexigraphical order, we have
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// to store everything another slice, sort it and then copy it back to our
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// passed in slice.
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Walk(ctx, reg.blobStore.driver, root, func(fileInfo driver.FileInfo) error {
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filePath := fileInfo.Path()
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// lop the base path off
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repoPath := filePath[len(root)+1:]
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_, file := path.Split(repoPath)
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if file == "_layers" {
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repoPath = strings.TrimSuffix(repoPath, "/_layers")
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if repoPath > last {
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foundRepos = append(foundRepos, repoPath)
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}
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return ErrSkipDir
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} else if strings.HasPrefix(file, "_") {
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return ErrSkipDir
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}
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return nil
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})
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sort.Strings(foundRepos)
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n = copy(repos, foundRepos)
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// Signal that we have no more entries by setting EOF
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if len(foundRepos) <= len(repos) {
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errVal = io.EOF
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}
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return n, errVal
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}
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