faastjs
Version:
Serverless batch computing made simple.
112 lines • 16.5 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.npmInstall = void 0;
const archiver = require("archiver");
const aws_sdk_1 = require("aws-sdk");
const child_process_1 = require("child_process");
const fs_extra_1 = require("fs-extra");
const os_1 = require("os");
const path = require("path");
const util_1 = require("util");
const shared_1 = require("../shared");
async function exec(cmds) {
let rv = "";
for (const cmd of cmds) {
rv += (0, child_process_1.execSync)(cmd).toString();
}
return rv;
}
async function npmInstall({ LayerName, packageJsonContents, FunctionName, region, quiet, retentionInDays }) {
const log = quiet ? (_) => { } : console.log;
log(`*** This faast invocation is an internal lambda call used when the packageJson option is specified to createFunction(). ***`);
log(`*** Its purpose is to create a node_modules package and cache it, then combine with user code to form an AWS Lambda code package and upload it to S3 ***`);
const buildParentDir = path.join((0, os_1.tmpdir)(), FunctionName);
const buildDir = path.join(buildParentDir, "nodejs");
await (0, fs_extra_1.ensureDir)(buildDir);
await (0, fs_extra_1.writeFile)(path.join(buildDir, "package.json"), packageJsonContents);
const awsconfig = { correctClockSkew: true, maxRetries: 6 };
let installLog = "";
log("Checking cache");
log(`Checking faast layers for ${LayerName}`);
const lambda = new aws_sdk_1.Lambda({ apiVersion: "2015-03-31", region, ...awsconfig });
const cached = await lambda
.listLayerVersions({ LayerName, CompatibleRuntime: "nodejs" })
.promise()
.catch(_ => undefined);
const layerVersion = cached?.LayerVersions?.[0];
if (layerVersion && !(0, shared_1.hasExpired)(layerVersion.CreatedDate, retentionInDays)) {
const layerInfo = {
LayerName,
Version: layerVersion.Version,
LayerVersionArn: layerVersion.LayerVersionArn
};
log(`CACHED, ${(0, util_1.inspect)(layerInfo)}`);
return { installLog, layerInfo };
}
log("NOT CACHED, running npm install");
installLog += await exec([`echo "hello world"`]);
installLog += await exec([
`export HOME=/tmp; npm install --prefix=${buildDir} --no-package-lock`
]);
log(`Running archiver`);
const cacheArchive = archiver("zip", { zlib: { level: 8 } });
cacheArchive.directory(buildParentDir, false).finalize();
log(`Converting archive to buffer`);
const ZipFile = await (0, shared_1.streamToBuffer)(cacheArchive);
log(`Code ZipFile size: ${ZipFile.length}`);
log(`Removing ${buildParentDir}`);
const removePromise = (0, fs_extra_1.remove)(buildParentDir);
let Content;
const Bucket = FunctionName;
const s3 = new aws_sdk_1.S3({ region, ...awsconfig });
const zipSize = ZipFile.length;
try {
if (ZipFile.length > 50 * 2 ** 20) {
// Try to use S3 to allow for a larger limit
log(`Creating s3 bucket ${Bucket}`);
await s3
.createBucket({ Bucket })
.promise()
.catch(_ => { });
log(`Uploading bucket: ${Bucket}, object: ${LayerName}`);
await s3.upload({ Bucket, Key: LayerName, Body: ZipFile }).promise();
Content = { S3Bucket: Bucket, S3Key: LayerName };
}
else {
Content = { ZipFile };
}
log(`Creating lambda layer: ${LayerName}, zip file size: ${ZipFile.length}`);
const publishResponse = await lambda
.publishLayerVersion({
LayerName,
Description: `faast packageJson layer with LayerName ${LayerName}`,
Content,
CompatibleRuntimes: ["nodejs"]
})
.promise();
const { Version } = publishResponse;
log(`Created lambda layer: ${LayerName}:${Version}`);
log(`DONE`);
return {
installLog,
layerInfo: {
LayerName,
LayerVersionArn: publishResponse.LayerVersionArn,
Version: publishResponse.Version
},
zipSize
};
}
finally {
if (Content?.S3Bucket) {
try {
await s3.deleteObject({ Bucket, Key: LayerName }).promise();
await s3.deleteBucket({ Bucket }).promise();
}
catch { }
}
await removePromise;
}
}
exports.npmInstall = npmInstall;
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* as archiver from \"archiver\";\nimport { Lambda, S3 } from \"aws-sdk\";\nimport { execSync } from \"child_process\";\nimport { ensureDir, remove, writeFile } from \"fs-extra\";\nimport { tmpdir } from \"os\";\nimport * as path from \"path\";\nimport { inspect } from \"util\";\nimport { streamToBuffer, hasExpired } from \"../shared\";\n\nasync function exec(cmds: string[]) {\n    let rv = \"\";\n    for (const cmd of cmds) {\n        rv += execSync(cmd).toString();\n    }\n    return rv;\n}\n\nexport interface NpmInstallArgs {\n    packageJsonContents: string;\n    LayerName: string;\n    FunctionName: string;\n    region: string;\n    quiet?: boolean;\n    retentionInDays: number;\n}\n\nexport interface AwsLayerInfo {\n    Version: number;\n    LayerVersionArn: string;\n    LayerName: string;\n}\n\nexport interface NpmInstallReturn {\n    installLog: string;\n    layerInfo: AwsLayerInfo;\n    zipSize?: number;\n}\n\nexport async function npmInstall({\n    LayerName,\n    packageJsonContents,\n    FunctionName,\n    region,\n    quiet,\n    retentionInDays\n}: NpmInstallArgs): Promise<NpmInstallReturn> {\n    const log = quiet ? (_: string) => {} : console.log;\n\n    log(\n        `*** This faast invocation is an internal lambda call used when the packageJson option is specified to createFunction(). ***`\n    );\n    log(\n        `*** Its purpose is to create a node_modules package and cache it, then combine with user code to form an AWS Lambda code package and upload it to S3 ***`\n    );\n\n    const buildParentDir = path.join(tmpdir(), FunctionName);\n    const buildDir = path.join(buildParentDir, \"nodejs\");\n    await ensureDir(buildDir);\n    await writeFile(path.join(buildDir, \"package.json\"), packageJsonContents);\n\n    const awsconfig = { correctClockSkew: true, maxRetries: 6 };\n\n    let installLog = \"\";\n    log(\"Checking cache\");\n    log(`Checking faast layers for ${LayerName}`);\n    const lambda = new Lambda({ apiVersion: \"2015-03-31\", region, ...awsconfig });\n\n    const cached = await lambda\n        .listLayerVersions({ LayerName, CompatibleRuntime: \"nodejs\" })\n        .promise()\n        .catch(_ => undefined);\n\n    const layerVersion = cached?.LayerVersions?.[0];\n    if (layerVersion && !hasExpired(layerVersion.CreatedDate, retentionInDays)) {\n        const layerInfo = {\n            LayerName,\n            Version: layerVersion.Version!,\n            LayerVersionArn: layerVersion.LayerVersionArn!\n        };\n        log(`CACHED, ${inspect(layerInfo)}`);\n        return { installLog, layerInfo };\n    }\n\n    log(\"NOT CACHED, running npm install\");\n    installLog += await exec([`echo \"hello world\"`]);\n    installLog += await exec([\n        `export HOME=/tmp; npm install --prefix=${buildDir} --no-package-lock`\n    ]);\n    log(`Running archiver`);\n    const cacheArchive = archiver(\"zip\", { zlib: { level: 8 } });\n    cacheArchive.directory(buildParentDir, false).finalize();\n    log(`Converting archive to buffer`);\n    const ZipFile = await streamToBuffer(cacheArchive);\n    log(`Code ZipFile size: ${ZipFile.length}`);\n    log(`Removing ${buildParentDir}`);\n    const removePromise = remove(buildParentDir);\n    let Content: Lambda.LayerVersionContentInput | undefined;\n    const Bucket = FunctionName;\n    const s3 = new S3({ region, ...awsconfig });\n    const zipSize = ZipFile.length;\n    try {\n        if (ZipFile.length > 50 * 2 ** 20) {\n            // Try to use S3 to allow for a larger limit\n            log(`Creating s3 bucket ${Bucket}`);\n            await s3\n                .createBucket({ Bucket })\n                .promise()\n                .catch(_ => {});\n            log(`Uploading bucket: ${Bucket}, object: ${LayerName}`);\n            await s3.upload({ Bucket, Key: LayerName, Body: ZipFile }).promise();\n            Content = { S3Bucket: Bucket, S3Key: LayerName };\n        } else {\n            Content = { ZipFile };\n        }\n        log(`Creating lambda layer: ${LayerName}, zip file size: ${ZipFile.length}`);\n        const publishResponse = await lambda\n            .publishLayerVersion({\n                LayerName,\n                Description: `faast packageJson layer with LayerName ${LayerName}`,\n                Content,\n                CompatibleRuntimes: [\"nodejs\"]\n            })\n            .promise();\n        const { Version } = publishResponse;\n        log(`Created lambda layer: ${LayerName}:${Version}`);\n        log(`DONE`);\n        return {\n            installLog,\n            layerInfo: {\n                LayerName,\n                LayerVersionArn: publishResponse.LayerVersionArn!,\n                Version: publishResponse.Version!\n            },\n            zipSize\n        };\n    } finally {\n        if (Content?.S3Bucket) {\n            try {\n                await s3.deleteObject({ Bucket, Key: LayerName }).promise();\n                await s3.deleteBucket({ Bucket }).promise();\n            } catch {}\n        }\n        await removePromise;\n    }\n}\n"]}