wehub-resource-sync
62 lines
2.3 KiB
Go
62 lines
2.3 KiB
Go
// Copyright 2026 Dolthub, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package blobstore
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import (
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"fmt"
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"os"
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"strings"
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)
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// DoltDataRef is the default remote ref backing a git-object-db dolt blobstore.
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const DoltDataRef = "refs/dolt/data"
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// DefaultInfoBranch is the default short branch name for the visible info branch
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// that indicates a repository is being used as a Dolt remote.
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const DefaultInfoBranch = "__dolt_remote_info__"
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// InfoBranchEnvVar is the environment variable that overrides the info branch name.
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// Set to an empty string to disable the info branch entirely.
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const InfoBranchEnvVar = "DOLT_REMOTE_INFO_BRANCH"
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// ResolveInfoBranch returns the info branch name from the environment, falling
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// back to the provided default. An empty return value means "disabled".
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func ResolveInfoBranch(defaultBranch string) string {
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if v, ok := os.LookupEnv(InfoBranchEnvVar); ok {
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return strings.TrimSpace(v)
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}
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return defaultBranch
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}
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func trimRefsPrefix(ref string) string {
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return strings.TrimPrefix(ref, "refs/")
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}
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// RemoteTrackingRef returns a UUID-owned remote-tracking ref for a GitBlobstore instance.
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// Each instance gets its own tracking ref to avoid concurrent git-fetch races
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// when multiple blobstore instances share the same cache repo.
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func RemoteTrackingRef(remoteName, remoteRef, uuid string) string {
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return fmt.Sprintf("refs/dolt/remotes/%s/%s/%s", remoteName, trimRefsPrefix(remoteRef), uuid)
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}
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// OwnedLocalRef returns a UUID-owned local ref for a GitBlobstore instance.
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//
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// Note: these UUID refs can accumulate in the local repo over time. This is
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// intentional for now; callers that want best-effort cleanup can use
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// (*GitBlobstore).CleanupOwnedLocalRef.
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func OwnedLocalRef(remoteName, remoteRef, uuid string) string {
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return fmt.Sprintf("refs/dolt/blobstore/%s/%s/%s", remoteName, trimRefsPrefix(remoteRef), uuid)
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}
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