2024-04-21 19:23:04 +02:00
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{"version":3,"sources":["../src/index.ts"],"sourcesContent":["import * as core from \"@actions/core\";\nimport { IdsToolbox } from \"detsys-ts\";\nimport got from \"got\";\nimport * as http from \"http\";\nimport { SpawnOptions, exec, spawn } from \"node:child_process\";\nimport { openSync, readFileSync } from \"node:fs\";\nimport * as fs from \"node:fs/promises\";\nimport * as os from \"node:os\";\nimport * as path from \"node:path\";\nimport { inspect, promisify } from \"node:util\";\nimport { Tail } from \"tail\";\n\nconst ENV_CACHE_DAEMONDIR = \"MAGIC_NIX_CACHE_DAEMONDIR\";\n\nconst gotClient = got.extend({\n retry: {\n limit: 1,\n methods: [\"POST\", \"GET\", \"PUT\", \"HEAD\", \"DELETE\", \"OPTIONS\", \"TRACE\"],\n },\n hooks: {\n beforeRetry: [\n (error, retryCount) => {\n core.info(`Retrying after error ${error.code}, retry #: ${retryCount}`);\n },\n ],\n },\n});\n\nasync function fetchAutoCacher(toolbox: IdsToolbox): Promise<string> {\n const closurePath = await toolbox.fetch();\n toolbox.recordEvent(\"load_closure\");\n const { stdout } = await promisify(exec)(\n `cat \"${closurePath}\" | xz -d | nix-store --import`,\n );\n\n const paths = stdout.split(os.EOL);\n // Since the export is in reverse topologically sorted order, magic-nix-cache is always the penultimate entry in the list (the empty string left by split being the last).\n const last_path = paths.at(-2);\n return `${last_path}/bin/magic-nix-cache`;\n}\n\nfunction tailLog(daemonDir: string): Tail {\n const log = new Tail(path.join(daemonDir, \"daemon.log\"));\n core.debug(`tailing daemon.log...`);\n log.on(\"line\", (line) => {\n core.info(line);\n });\n return log;\n}\n\nasync function setUpAutoCache(toolbox: IdsToolbox): Promise<void> {\n const tmpdir = process.env[\"RUNNER_TEMP\"] || os.tmpdir();\n const required_env = [\n \"ACTIONS_CACHE_URL\",\n \"ACTIONS_RUNTIME_URL\",\n \"ACTIONS_RUNTIME_TOKEN\",\n ];\n\n let anyMissing = false;\n for (const n of required_env) {\n if (!process.env.hasOwnProperty(n)) {\n anyMissing = true;\n core.warning(\n `Disabling automatic caching since required environment ${n} isn't available`,\n );\n }\n }\n\n if (anyMissing) {\n return;\n }\n\n core.debug(`GitHub Action Cache URL: ${process.env[\"ACTIONS_CACHE_URL\"]}`);\n\n const daemonDir = await fs.mkdtemp(path.join(tmpdir, \"magic-nix-cache-\"));\n\n let daemonBin: string;\n if (core.getInput(\"source-binary\")) {\n daemonBin = core.getInput(\"source-binary\");\n } else {\n daemonBin = await fetchAutoCacher(toolbox);\n }\n\n let runEnv;\n if (core.isDebug()) {\n runEnv = {\n RUST_LOG: \"trace,magic_nix_cache=debug,gha_cache=debug\",\n RUST_BACKTRACE: \"full\",\n ...process.env,\n };\n } else {\n runEnv = process.env;\n }\n\n const notifyPort = core.getInput(\"startup-notification-port\");\n\n const notifyPromise = new Promise<Promise<void>>((resolveListening) => {\n const promise = new Promise<void>(async (resolveQuit) => {\n const notifyServer = http.createServer((req, res) => {\n if (req.method === \"POST\" && req.url === \"/\") {\n core.debug(`Notify server shutting down.`);\n res.writeHead(200, { \"Content-Type\": \"application/json\" });\n res.end(\"{}\");\n notifyServer.close(() => {\n resolveQuit();\n });\n }\n });\n\n notifyServer.listen(notifyPort, () => {\n core.debug(`Notify server running.`);\n resolveListening(promise);\n });\n });\n });\n\n // Start tailing the daemon log.\n const outputPath = `${daemonDir}/daemon.log`;\n const output = openSync(outputPath, \"a\");\n const log = tailLog(daemonDir);\n const netrc = await netrcPath();\n const nixConfPath = `${process.env[\"HOME\"]}/.config/nix/nix.conf`;\n\n const daemonCliFlags: string[] = [\n \"--startup-notification-url\",\n `http://127.0.0.1:${notifyPort}`,\n \"--listen\",\n core.getInput(\"listen\"),\n \"--upstream\",\n core.g
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