James Long
808 lines
32 KiB
TypeScript
808 lines
32 KiB
TypeScript
import { LayerNode } from "@opencode-ai/core/effect/layer-node"
|
|
import { Cause, Duration, Effect, Layer, Schedule, Schema, Semaphore, Context } from "effect"
|
|
import { ChildProcess, ChildProcessSpawner } from "effect/unstable/process"
|
|
import { formatPatch, structuredPatch } from "diff"
|
|
import path from "path"
|
|
import { AppProcess } from "@opencode-ai/core/process"
|
|
import { InstanceState } from "@/effect/instance-state"
|
|
import { FSUtil } from "@opencode-ai/core/fs-util"
|
|
import { Hash } from "@opencode-ai/core/util/hash"
|
|
import { Config } from "@/config/config"
|
|
import { Global } from "@opencode-ai/core/global"
|
|
import { Info } from "@opencode-ai/schema/file-diff"
|
|
|
|
export const Patch = Schema.Struct({
|
|
hash: Schema.String,
|
|
files: Schema.mutable(Schema.Array(Schema.String)),
|
|
})
|
|
export type Patch = typeof Patch.Type
|
|
|
|
export const FileDiff = Info
|
|
export type FileDiff = typeof FileDiff.Type
|
|
|
|
const prune = "7.days"
|
|
const limit = 2 * 1024 * 1024
|
|
const core = ["-c", "core.longpaths=true", "-c", "core.symlinks=true"]
|
|
const cfg = ["-c", "core.autocrlf=false", ...core]
|
|
const quote = [...cfg, "-c", "core.quotepath=false"]
|
|
interface GitResult {
|
|
readonly code: ChildProcessSpawner.ExitCode
|
|
readonly text: string
|
|
readonly stderr: string
|
|
}
|
|
|
|
type State = Omit<Interface, "init">
|
|
|
|
export interface Interface {
|
|
readonly init: () => Effect.Effect<void>
|
|
readonly cleanup: () => Effect.Effect<void>
|
|
readonly track: () => Effect.Effect<string | undefined>
|
|
readonly patch: (hash: string) => Effect.Effect<Patch>
|
|
readonly restore: (snapshot: string) => Effect.Effect<void>
|
|
readonly revert: (patches: Patch[]) => Effect.Effect<void>
|
|
readonly diff: (hash: string) => Effect.Effect<string>
|
|
readonly diffFull: (from: string, to: string) => Effect.Effect<FileDiff[]>
|
|
}
|
|
|
|
export class Service extends Context.Service<Service, Interface>()("@opencode/Snapshot") {}
|
|
|
|
const layer: Layer.Layer<Service, never, FSUtil.Service | AppProcess.Service | Config.Service> = Layer.effect(
|
|
Service,
|
|
Effect.gen(function* () {
|
|
const fs = yield* FSUtil.Service
|
|
const appProcess = yield* AppProcess.Service
|
|
const config = yield* Config.Service
|
|
const locks = new Map<string, Semaphore.Semaphore>()
|
|
|
|
const lock = (key: string) => {
|
|
const hit = locks.get(key)
|
|
if (hit) return hit
|
|
|
|
const next = Semaphore.makeUnsafe(1)
|
|
locks.set(key, next)
|
|
return next
|
|
}
|
|
|
|
const state = yield* InstanceState.make<State>(
|
|
Effect.fn("Snapshot.state")(function* (ctx) {
|
|
const state = {
|
|
directory: ctx.directory,
|
|
worktree: ctx.worktree,
|
|
gitdir: path.join(Global.Path.data, "snapshot", ctx.project.id, Hash.fast(ctx.worktree)),
|
|
vcs: ctx.project.vcs,
|
|
}
|
|
|
|
const args = (cmd: string[]) => ["--git-dir", state.gitdir, "--work-tree", state.worktree, ...cmd]
|
|
|
|
const encodeNulTerminatedPaths = (files: string[]) => files.join("\0") + "\0"
|
|
const encodeTopLevelLiteralPathspecs = (files: string[]) =>
|
|
encodeNulTerminatedPaths(files.map((file) => `:(top,literal)${file}`))
|
|
|
|
const git = Effect.fnUntraced(
|
|
function* (cmd: string[], opts?: { cwd?: string; env?: Record<string, string>; stdin?: string }) {
|
|
const result = yield* appProcess.run(
|
|
ChildProcess.make("git", cmd, { cwd: opts?.cwd, env: opts?.env, extendEnv: true }),
|
|
{ stdin: opts?.stdin },
|
|
)
|
|
return {
|
|
code: ChildProcessSpawner.ExitCode(result.exitCode),
|
|
text: result.stdout.toString("utf8"),
|
|
stderr: result.stderr.toString("utf8"),
|
|
} satisfies GitResult
|
|
},
|
|
Effect.catch((err) =>
|
|
Effect.succeed({
|
|
code: ChildProcessSpawner.ExitCode(1),
|
|
text: "",
|
|
stderr: err instanceof Error ? err.message : String(err),
|
|
}),
|
|
),
|
|
)
|
|
|
|
const ignore = Effect.fnUntraced(function* (files: string[]) {
|
|
if (!files.length) return new Set<string>()
|
|
// check-ignore treats a leading colon as pathspec magic but accepts and echoes a protective ./ prefix.
|
|
const checkIgnorePaths = files.map((item) => (item.startsWith(":") ? `./${item}` : item))
|
|
const check = yield* git(
|
|
[
|
|
...quote,
|
|
"--git-dir",
|
|
path.join(state.worktree, ".git"),
|
|
"--work-tree",
|
|
state.worktree,
|
|
"check-ignore",
|
|
"--no-index",
|
|
"--stdin",
|
|
"-z",
|
|
],
|
|
{
|
|
cwd: state.worktree,
|
|
stdin: encodeNulTerminatedPaths(checkIgnorePaths),
|
|
},
|
|
)
|
|
if (check.code !== 0 && check.code !== 1) return new Set<string>()
|
|
return new Set(
|
|
check.text
|
|
.split("\0")
|
|
.filter(Boolean)
|
|
.map((item) => (item.startsWith("./:") ? item.slice(2) : item)),
|
|
)
|
|
})
|
|
|
|
const drop = Effect.fnUntraced(function* (files: string[]) {
|
|
if (!files.length) return
|
|
yield* git(
|
|
[
|
|
...cfg,
|
|
...args(["rm", "--cached", "-f", "--ignore-unmatch", "--pathspec-from-file=-", "--pathspec-file-nul"]),
|
|
],
|
|
{
|
|
cwd: state.worktree,
|
|
stdin: encodeTopLevelLiteralPathspecs(files),
|
|
},
|
|
)
|
|
})
|
|
|
|
const stage = Effect.fnUntraced(function* (files: string[]) {
|
|
if (!files.length) return
|
|
const result = yield* git(
|
|
[...cfg, ...args(["add", "--all", "--sparse", "--pathspec-from-file=-", "--pathspec-file-nul"])],
|
|
{
|
|
cwd: state.worktree,
|
|
stdin: encodeTopLevelLiteralPathspecs(files),
|
|
},
|
|
)
|
|
if (result.code === 0) return
|
|
yield* Effect.logWarning("failed to add snapshot files", {
|
|
exitCode: result.code,
|
|
stderr: result.stderr,
|
|
})
|
|
})
|
|
|
|
const exists = (file: string) => fs.exists(file).pipe(Effect.orDie)
|
|
const read = (file: string) => fs.readFileString(file).pipe(Effect.catch(() => Effect.succeed("")))
|
|
const remove = (file: string) => fs.remove(file).pipe(Effect.catch(() => Effect.void))
|
|
const locked = <A, E, R>(fx: Effect.Effect<A, E, R>) => lock(state.gitdir).withPermits(1)(fx)
|
|
|
|
const enabled = Effect.fnUntraced(function* () {
|
|
if (state.vcs !== "git") return false
|
|
return (yield* config.get()).snapshot !== false
|
|
})
|
|
|
|
const excludes = Effect.fnUntraced(function* () {
|
|
const result = yield* git(["rev-parse", "--path-format=absolute", "--git-path", "info/exclude"], {
|
|
cwd: state.worktree,
|
|
})
|
|
const file = result.text.trim()
|
|
if (!file) return
|
|
if (!(yield* exists(file))) return
|
|
return file
|
|
})
|
|
|
|
const sync = Effect.fnUntraced(function* (list: string[] = []) {
|
|
const file = yield* excludes()
|
|
const target = path.join(state.gitdir, "info", "exclude")
|
|
const text = [
|
|
file ? (yield* read(file)).trimEnd() : "",
|
|
...list.map((item) => `/${item.replaceAll("\\", "/")}`),
|
|
]
|
|
.filter(Boolean)
|
|
.join("\n")
|
|
yield* fs.ensureDir(path.join(state.gitdir, "info")).pipe(Effect.orDie)
|
|
yield* fs.writeFileString(target, text ? `${text}\n` : "").pipe(Effect.orDie)
|
|
})
|
|
|
|
// Reuse the hashes for the git storage between the original repo and snapshot
|
|
// on huge repos like chromium checkout the git add --all rebuilding the
|
|
// hashes can take minutes. By doing this we eliminating this at all
|
|
const seed = Effect.fnUntraced(function* () {
|
|
if (state.vcs !== "git") return
|
|
|
|
const commonDir = yield* git(["rev-parse", "--path-format=absolute", "--git-common-dir"], {
|
|
cwd: state.worktree,
|
|
})
|
|
|
|
if (commonDir.code !== 0) return
|
|
const source = commonDir.text.trim()
|
|
if (!source || !(yield* exists(source))) return
|
|
|
|
// Share the source object database (and the source's own alternates,
|
|
// skipping any that no longer exist) so seeded blobs resolve.
|
|
const sourceObjects = path.join(source, "objects")
|
|
const chained = (yield* read(path.join(sourceObjects, "info", "alternates")))
|
|
.split("\n")
|
|
.map((line) => line.trim())
|
|
.filter(Boolean)
|
|
const alternates: string[] = []
|
|
for (const candidate of [sourceObjects, ...chained]) {
|
|
if (yield* exists(candidate)) alternates.push(candidate)
|
|
}
|
|
if (!alternates.length) return
|
|
|
|
yield* fs.ensureDir(path.join(state.gitdir, "objects", "info")).pipe(Effect.orDie)
|
|
yield* fs
|
|
.writeFileString(path.join(state.gitdir, "objects", "info", "alternates"), alternates.join("\n") + "\n")
|
|
.pipe(Effect.orDie)
|
|
|
|
// Seed the index from the source repo so already-hashed entries are reused.
|
|
// Best-effort: a missing/incompatible index just falls back to a full add.
|
|
const sourceIndex = path.join(source, "index")
|
|
if (yield* exists(sourceIndex)) {
|
|
yield* fs.copyFile(sourceIndex, path.join(state.gitdir, "index")).pipe(Effect.catch(() => Effect.void))
|
|
}
|
|
})
|
|
|
|
const add = Effect.fnUntraced(function* () {
|
|
yield* sync()
|
|
const [diff, other] = yield* Effect.all(
|
|
[
|
|
git([...quote, ...args(["diff-files", "--name-only", "-z", "--", "."])], {
|
|
cwd: state.directory,
|
|
}),
|
|
git([...quote, ...args(["ls-files", "--full-name", "--others", "--exclude-standard", "-z", "--", "."])], {
|
|
cwd: state.directory,
|
|
}),
|
|
],
|
|
{ concurrency: 2 },
|
|
)
|
|
if (diff.code !== 0 || other.code !== 0) {
|
|
yield* Effect.logWarning("failed to list snapshot files", {
|
|
diffCode: diff.code,
|
|
diffStderr: diff.stderr,
|
|
otherCode: other.code,
|
|
otherStderr: other.stderr,
|
|
})
|
|
return
|
|
}
|
|
|
|
const tracked = diff.text.split("\0").filter(Boolean)
|
|
const untracked = other.text.split("\0").filter(Boolean)
|
|
const all = Array.from(new Set([...tracked, ...untracked]))
|
|
if (!all.length) return
|
|
|
|
// Resolve source-repo ignore rules against the exact candidate set.
|
|
// --no-index keeps this pattern-based even when a path is already tracked.
|
|
const ignored = yield* ignore(all)
|
|
|
|
// Remove newly-ignored files from snapshot index to prevent re-adding
|
|
if (ignored.size > 0) {
|
|
const ignoredFiles = Array.from(ignored)
|
|
yield* Effect.logInfo("removing gitignored files from snapshot", { count: ignoredFiles.length })
|
|
yield* drop(ignoredFiles)
|
|
}
|
|
|
|
const allow = all.filter((item) => !ignored.has(item))
|
|
if (!allow.length) return
|
|
|
|
const large = new Set(
|
|
(yield* Effect.all(
|
|
allow.map((item) =>
|
|
fs
|
|
.stat(path.join(state.worktree, item))
|
|
.pipe(Effect.catch(() => Effect.void))
|
|
.pipe(
|
|
Effect.map((stat) => {
|
|
if (!stat || stat.type !== "File") return
|
|
const size = typeof stat.size === "bigint" ? Number(stat.size) : stat.size
|
|
return size > limit ? item : undefined
|
|
}),
|
|
),
|
|
),
|
|
{ concurrency: 8 },
|
|
)).filter((item): item is string => Boolean(item)),
|
|
)
|
|
const block = new Set(untracked.filter((item) => large.has(item)))
|
|
yield* sync(Array.from(block))
|
|
// Stage only the allowed candidate paths so snapshot updates stay scoped.
|
|
yield* stage(allow.filter((item) => !block.has(item)))
|
|
})
|
|
|
|
const cleanup = Effect.fnUntraced(function* () {
|
|
return yield* locked(
|
|
Effect.gen(function* () {
|
|
if (!(yield* enabled())) return
|
|
if (!(yield* exists(state.gitdir))) return
|
|
const result = yield* git(args(["gc", `--prune=${prune}`]), { cwd: state.directory })
|
|
if (result.code !== 0) {
|
|
yield* Effect.logWarning("cleanup failed", {
|
|
exitCode: result.code,
|
|
stderr: result.stderr,
|
|
})
|
|
return
|
|
}
|
|
yield* Effect.logInfo("cleanup", { prune })
|
|
}),
|
|
)
|
|
})
|
|
|
|
const track = Effect.fnUntraced(function* () {
|
|
return yield* locked(
|
|
Effect.gen(function* () {
|
|
if (!(yield* enabled())) return
|
|
const existed = yield* exists(state.gitdir)
|
|
yield* fs.ensureDir(state.gitdir).pipe(Effect.orDie)
|
|
if (!existed) {
|
|
yield* git(["init"], {
|
|
env: { GIT_DIR: state.gitdir, GIT_WORK_TREE: state.worktree },
|
|
})
|
|
yield* git(["--git-dir", state.gitdir, "config", "core.autocrlf", "false"])
|
|
yield* git(["--git-dir", state.gitdir, "config", "core.longpaths", "true"])
|
|
yield* git(["--git-dir", state.gitdir, "config", "core.symlinks", "true"])
|
|
yield* git(["--git-dir", state.gitdir, "config", "core.fsmonitor", "false"])
|
|
// Tuning for very large worktrees so the first add stays bounded.
|
|
yield* git(["--git-dir", state.gitdir, "config", "feature.manyFiles", "true"])
|
|
yield* git(["--git-dir", state.gitdir, "config", "index.version", "4"])
|
|
yield* git(["--git-dir", state.gitdir, "config", "index.threads", "true"])
|
|
yield* git(["--git-dir", state.gitdir, "config", "core.untrackedCache", "true"])
|
|
yield* seed()
|
|
yield* Effect.logInfo("initialized")
|
|
}
|
|
yield* add()
|
|
const result = yield* git(args(["write-tree"]), { cwd: state.directory })
|
|
const hash = result.text.trim()
|
|
yield* Effect.logInfo("tracking", { hash, cwd: state.directory, git: state.gitdir })
|
|
return hash
|
|
}),
|
|
)
|
|
})
|
|
|
|
const patch = Effect.fnUntraced(function* (hash: string) {
|
|
return yield* locked(
|
|
Effect.gen(function* () {
|
|
yield* add()
|
|
const result = yield* git(
|
|
[...quote, ...args(["diff", "--cached", "--no-ext-diff", "--name-only", hash, "--", "."])],
|
|
{
|
|
cwd: state.directory,
|
|
},
|
|
)
|
|
if (result.code !== 0) {
|
|
yield* Effect.logWarning("failed to get diff", { hash, exitCode: result.code })
|
|
return { hash, files: [] }
|
|
}
|
|
const files = result.text
|
|
.trim()
|
|
.split("\n")
|
|
.map((x) => x.trim())
|
|
.filter(Boolean)
|
|
|
|
// Hide ignored-file removals from the user-facing patch output.
|
|
const ignored = yield* ignore(files)
|
|
|
|
return {
|
|
hash,
|
|
files: files
|
|
.filter((item) => !ignored.has(item))
|
|
.map((x) => path.join(state.worktree, x).replaceAll("\\", "/")),
|
|
}
|
|
}),
|
|
)
|
|
})
|
|
|
|
const restore = Effect.fnUntraced(function* (snapshot: string) {
|
|
return yield* locked(
|
|
Effect.gen(function* () {
|
|
yield* Effect.logInfo("restore", { commit: snapshot })
|
|
const result = yield* git([...core, ...args(["read-tree", snapshot])], { cwd: state.worktree })
|
|
if (result.code === 0) {
|
|
const checkout = yield* git([...core, ...args(["checkout-index", "-a", "-f"])], {
|
|
cwd: state.worktree,
|
|
})
|
|
if (checkout.code === 0) return
|
|
yield* Effect.logError("failed to restore snapshot", {
|
|
snapshot,
|
|
exitCode: checkout.code,
|
|
stderr: checkout.stderr,
|
|
})
|
|
return
|
|
}
|
|
yield* Effect.logError("failed to restore snapshot", {
|
|
snapshot,
|
|
exitCode: result.code,
|
|
stderr: result.stderr,
|
|
})
|
|
}),
|
|
)
|
|
})
|
|
|
|
const revert = Effect.fnUntraced(function* (patches: Patch[]) {
|
|
return yield* locked(
|
|
Effect.gen(function* () {
|
|
const ops: { hash: string; file: string; rel: string }[] = []
|
|
const seen = new Set<string>()
|
|
for (const item of patches) {
|
|
for (const file of item.files) {
|
|
if (seen.has(file)) continue
|
|
seen.add(file)
|
|
ops.push({
|
|
hash: item.hash,
|
|
file,
|
|
rel: path.relative(state.worktree, file).replaceAll("\\", "/"),
|
|
})
|
|
}
|
|
}
|
|
|
|
const single = Effect.fnUntraced(function* (op: (typeof ops)[number]) {
|
|
yield* Effect.logInfo("reverting", { file: op.file, hash: op.hash })
|
|
const result = yield* git([...core, ...args(["checkout", op.hash, "--", op.file])], {
|
|
cwd: state.worktree,
|
|
})
|
|
if (result.code === 0) return
|
|
const tree = yield* git([...core, ...args(["ls-tree", op.hash, "--", op.rel])], {
|
|
cwd: state.worktree,
|
|
})
|
|
if (tree.code === 0 && tree.text.trim()) {
|
|
yield* Effect.logInfo("file existed in snapshot but checkout failed, keeping", {
|
|
file: op.file,
|
|
hash: op.hash,
|
|
})
|
|
return
|
|
}
|
|
yield* Effect.logInfo("file did not exist in snapshot, deleting", { file: op.file, hash: op.hash })
|
|
yield* remove(op.file)
|
|
})
|
|
|
|
const clash = (a: string, b: string) => a === b || a.startsWith(`${b}/`) || b.startsWith(`${a}/`)
|
|
|
|
for (let i = 0; i < ops.length; ) {
|
|
const first = ops[i]!
|
|
const run = [first]
|
|
let j = i + 1
|
|
// Only batch adjacent files when their paths cannot affect each other.
|
|
while (j < ops.length && run.length < 100) {
|
|
const next = ops[j]!
|
|
if (next.hash !== first.hash) break
|
|
if (run.some((item) => clash(item.rel, next.rel))) break
|
|
run.push(next)
|
|
j += 1
|
|
}
|
|
|
|
if (run.length === 1) {
|
|
yield* single(first)
|
|
i = j
|
|
continue
|
|
}
|
|
|
|
const tree = yield* git(
|
|
[...core, ...args(["ls-tree", "--name-only", first.hash, "--", ...run.map((item) => item.rel)])],
|
|
{
|
|
cwd: state.worktree,
|
|
},
|
|
)
|
|
|
|
if (tree.code !== 0) {
|
|
yield* Effect.logInfo("batched ls-tree failed, falling back to single-file revert", {
|
|
hash: first.hash,
|
|
files: run.length,
|
|
})
|
|
for (const op of run) {
|
|
yield* single(op)
|
|
}
|
|
i = j
|
|
continue
|
|
}
|
|
|
|
const have = new Set(
|
|
tree.text
|
|
.trim()
|
|
.split("\n")
|
|
.map((item) => item.trim())
|
|
.filter(Boolean),
|
|
)
|
|
const list = run.filter((item) => have.has(item.rel))
|
|
if (list.length) {
|
|
yield* Effect.logInfo("reverting", { hash: first.hash, files: list.length })
|
|
const result = yield* git(
|
|
[...core, ...args(["checkout", first.hash, "--", ...list.map((item) => item.file)])],
|
|
{
|
|
cwd: state.worktree,
|
|
},
|
|
)
|
|
if (result.code !== 0) {
|
|
yield* Effect.logInfo("batched checkout failed, falling back to single-file revert", {
|
|
hash: first.hash,
|
|
files: list.length,
|
|
})
|
|
for (const op of run) {
|
|
yield* single(op)
|
|
}
|
|
i = j
|
|
continue
|
|
}
|
|
}
|
|
|
|
for (const op of run) {
|
|
if (have.has(op.rel)) continue
|
|
yield* Effect.logInfo("file did not exist in snapshot, deleting", { file: op.file, hash: op.hash })
|
|
yield* remove(op.file)
|
|
}
|
|
|
|
i = j
|
|
}
|
|
}),
|
|
)
|
|
})
|
|
|
|
const diff = Effect.fnUntraced(function* (hash: string) {
|
|
return yield* locked(
|
|
Effect.gen(function* () {
|
|
yield* add()
|
|
const result = yield* git([...quote, ...args(["diff", "--cached", "--no-ext-diff", hash, "--", "."])], {
|
|
cwd: state.worktree,
|
|
})
|
|
if (result.code !== 0) {
|
|
yield* Effect.logWarning("failed to get diff", {
|
|
hash,
|
|
exitCode: result.code,
|
|
stderr: result.stderr,
|
|
})
|
|
return ""
|
|
}
|
|
return result.text.trim()
|
|
}),
|
|
)
|
|
})
|
|
|
|
const diffFull = Effect.fnUntraced(function* (from: string, to: string) {
|
|
return yield* locked(
|
|
Effect.gen(function* () {
|
|
type Row = {
|
|
file: string
|
|
status: "added" | "deleted" | "modified"
|
|
binary: boolean
|
|
additions: number
|
|
deletions: number
|
|
}
|
|
|
|
type Ref = {
|
|
file: string
|
|
side: "before" | "after"
|
|
ref: string
|
|
}
|
|
|
|
const show = Effect.fnUntraced(function* (row: Row) {
|
|
if (row.binary) return ["", ""]
|
|
if (row.status === "added") {
|
|
return [
|
|
"",
|
|
yield* git([...cfg, ...args(["show", `${to}:${row.file}`])]).pipe(Effect.map((item) => item.text)),
|
|
]
|
|
}
|
|
if (row.status === "deleted") {
|
|
return [
|
|
yield* git([...cfg, ...args(["show", `${from}:${row.file}`])]).pipe(
|
|
Effect.map((item) => item.text),
|
|
),
|
|
"",
|
|
]
|
|
}
|
|
return yield* Effect.all(
|
|
[
|
|
git([...cfg, ...args(["show", `${from}:${row.file}`])]).pipe(Effect.map((item) => item.text)),
|
|
git([...cfg, ...args(["show", `${to}:${row.file}`])]).pipe(Effect.map((item) => item.text)),
|
|
],
|
|
{ concurrency: 2 },
|
|
)
|
|
})
|
|
|
|
const load = Effect.fnUntraced(
|
|
function* (rows: Row[]) {
|
|
const refs = rows.flatMap((row) => {
|
|
if (row.binary) return []
|
|
if (row.status === "added")
|
|
return [{ file: row.file, side: "after", ref: `${to}:${row.file}` } satisfies Ref]
|
|
if (row.status === "deleted") {
|
|
return [{ file: row.file, side: "before", ref: `${from}:${row.file}` } satisfies Ref]
|
|
}
|
|
return [
|
|
{ file: row.file, side: "before", ref: `${from}:${row.file}` } satisfies Ref,
|
|
{ file: row.file, side: "after", ref: `${to}:${row.file}` } satisfies Ref,
|
|
]
|
|
})
|
|
if (!refs.length) return new Map<string, { before: string; after: string }>()
|
|
|
|
const batch = yield* appProcess.run(
|
|
ChildProcess.make("git", [...cfg, ...args(["cat-file", "--batch"])], {
|
|
cwd: state.directory,
|
|
extendEnv: true,
|
|
}),
|
|
{ stdin: refs.map((item) => item.ref).join("\n") + "\n" },
|
|
)
|
|
if (batch.exitCode !== 0) {
|
|
yield* Effect.logInfo(
|
|
"git cat-file --batch failed during snapshot diff, falling back to per-file git show",
|
|
{
|
|
stderr: batch.stderr.toString("utf8"),
|
|
refs: refs.length,
|
|
},
|
|
)
|
|
return
|
|
}
|
|
const out = batch.stdout
|
|
|
|
const fail = (msg: string, extra?: Record<string, string>) => {
|
|
return undefined
|
|
}
|
|
|
|
const map = new Map<string, { before: string; after: string }>()
|
|
const dec = new TextDecoder()
|
|
let i = 0
|
|
for (const ref of refs) {
|
|
let end = i
|
|
while (end < out.length && out[end] !== 10) end += 1
|
|
if (end >= out.length) {
|
|
return fail(
|
|
"git cat-file --batch returned a truncated header during snapshot diff, falling back to per-file git show",
|
|
)
|
|
}
|
|
|
|
const head = dec.decode(out.slice(i, end))
|
|
i = end + 1
|
|
const hit = map.get(ref.file) ?? { before: "", after: "" }
|
|
if (head.endsWith(" missing")) {
|
|
map.set(ref.file, hit)
|
|
continue
|
|
}
|
|
|
|
const match = head.match(/^[0-9a-f]+ blob (\d+)$/)
|
|
if (!match) {
|
|
return fail(
|
|
"git cat-file --batch returned an unexpected header during snapshot diff, falling back to per-file git show",
|
|
{ head },
|
|
)
|
|
}
|
|
|
|
const size = Number(match[1])
|
|
if (!Number.isInteger(size) || size < 0 || i + size >= out.length || out[i + size] !== 10) {
|
|
return fail(
|
|
"git cat-file --batch returned truncated content during snapshot diff, falling back to per-file git show",
|
|
{ head },
|
|
)
|
|
}
|
|
|
|
const text = dec.decode(out.slice(i, i + size))
|
|
if (ref.side === "before") hit.before = text
|
|
if (ref.side === "after") hit.after = text
|
|
map.set(ref.file, hit)
|
|
i += size + 1
|
|
}
|
|
|
|
if (i !== out.length) {
|
|
return fail(
|
|
"git cat-file --batch returned trailing data during snapshot diff, falling back to per-file git show",
|
|
)
|
|
}
|
|
|
|
return map
|
|
},
|
|
Effect.scoped,
|
|
Effect.catch(() =>
|
|
Effect.succeed<Map<string, { before: string; after: string }> | undefined>(undefined),
|
|
),
|
|
)
|
|
|
|
const result: FileDiff[] = []
|
|
const status = new Map<string, "added" | "deleted" | "modified">()
|
|
|
|
const statuses = yield* git(
|
|
[...quote, ...args(["diff", "--no-ext-diff", "--name-status", "--no-renames", from, to, "--", "."])],
|
|
{ cwd: state.directory },
|
|
)
|
|
|
|
for (const line of statuses.text.trim().split("\n")) {
|
|
if (!line) continue
|
|
const [code, file] = line.split("\t")
|
|
if (!code || !file) continue
|
|
status.set(file, code.startsWith("A") ? "added" : code.startsWith("D") ? "deleted" : "modified")
|
|
}
|
|
|
|
const numstat = yield* git(
|
|
[...quote, ...args(["diff", "--no-ext-diff", "--no-renames", "--numstat", from, to, "--", "."])],
|
|
{
|
|
cwd: state.directory,
|
|
},
|
|
)
|
|
|
|
const rows = numstat.text
|
|
.trim()
|
|
.split("\n")
|
|
.filter(Boolean)
|
|
.flatMap((line) => {
|
|
const [adds, dels, file] = line.split("\t")
|
|
if (!file) return []
|
|
const binary = adds === "-" && dels === "-"
|
|
const additions = binary ? 0 : parseInt(adds)
|
|
const deletions = binary ? 0 : parseInt(dels)
|
|
return [
|
|
{
|
|
file,
|
|
status: status.get(file) ?? "modified",
|
|
binary,
|
|
additions: Number.isFinite(additions) ? additions : 0,
|
|
deletions: Number.isFinite(deletions) ? deletions : 0,
|
|
} satisfies Row,
|
|
]
|
|
})
|
|
|
|
// Hide ignored-file removals from the user-facing diff output.
|
|
const ignored = yield* ignore(rows.map((r) => r.file))
|
|
if (ignored.size > 0) {
|
|
const filtered = rows.filter((r) => !ignored.has(r.file))
|
|
rows.length = 0
|
|
rows.push(...filtered)
|
|
}
|
|
|
|
const step = 100
|
|
const patch = (file: string, before: string, after: string) =>
|
|
formatPatch(structuredPatch(file, file, before, after, "", "", { context: Number.MAX_SAFE_INTEGER }))
|
|
|
|
for (let i = 0; i < rows.length; i += step) {
|
|
const run = rows.slice(i, i + step)
|
|
const text = yield* load(run)
|
|
|
|
for (const row of run) {
|
|
const hit = text?.get(row.file) ?? { before: "", after: "" }
|
|
const [before, after] = row.binary ? ["", ""] : text ? [hit.before, hit.after] : yield* show(row)
|
|
result.push({
|
|
file: row.file,
|
|
patch: row.binary ? "" : patch(row.file, before, after),
|
|
additions: row.additions,
|
|
deletions: row.deletions,
|
|
status: row.status,
|
|
})
|
|
}
|
|
}
|
|
|
|
return result
|
|
}),
|
|
)
|
|
})
|
|
|
|
yield* cleanup().pipe(
|
|
Effect.catchCause((cause) => Effect.logError("cleanup loop failed", { cause: Cause.pretty(cause) })),
|
|
Effect.repeat(Schedule.spaced(Duration.hours(1))),
|
|
Effect.delay(Duration.minutes(1)),
|
|
Effect.forkScoped,
|
|
)
|
|
|
|
return { cleanup, track, patch, restore, revert, diff, diffFull }
|
|
}),
|
|
)
|
|
|
|
return Service.of({
|
|
init: Effect.fn("Snapshot.init")(function* () {
|
|
yield* InstanceState.get(state)
|
|
}),
|
|
cleanup: Effect.fn("Snapshot.cleanup")(function* () {
|
|
return yield* InstanceState.useEffect(state, (s) => s.cleanup())
|
|
}),
|
|
track: Effect.fn("Snapshot.track")(function* () {
|
|
return yield* InstanceState.useEffect(state, (s) => s.track())
|
|
}),
|
|
patch: Effect.fn("Snapshot.patch")(function* (hash: string) {
|
|
return yield* InstanceState.useEffect(state, (s) => s.patch(hash))
|
|
}),
|
|
restore: Effect.fn("Snapshot.restore")(function* (snapshot: string) {
|
|
return yield* InstanceState.useEffect(state, (s) => s.restore(snapshot))
|
|
}),
|
|
revert: Effect.fn("Snapshot.revert")(function* (patches: Patch[]) {
|
|
return yield* InstanceState.useEffect(state, (s) => s.revert(patches))
|
|
}),
|
|
diff: Effect.fn("Snapshot.diff")(function* (hash: string) {
|
|
return yield* InstanceState.useEffect(state, (s) => s.diff(hash))
|
|
}),
|
|
diffFull: Effect.fn("Snapshot.diffFull")(function* (from: string, to: string) {
|
|
return yield* InstanceState.useEffect(state, (s) => s.diffFull(from, to))
|
|
}),
|
|
})
|
|
}),
|
|
)
|
|
|
|
export const node = LayerNode.make({
|
|
service: Service,
|
|
layer: layer,
|
|
deps: [FSUtil.node, AppProcess.node, Config.node],
|
|
})
|
|
|
|
export * as Snapshot from "."
|