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#!/usr/bin/env node
import {
type Command,
Either,
LogTraceable,
getRequiredEnvVars,
isObject,
LogMetricTraceable,
Metric,
prependWith,
TraceUtil,
getStdoutMany,
} from '@emprespresso/pengueno';
import { mkdir, readFile, rm } from 'fs/promises';
import { join } from 'path';
import { type CheckoutCiJob, type FetchCodeJob, PipelineImpl } from '@emprespresso/ci_model';
import { executeJob, executePipeline } from '@emprespresso/ci_worker';
interface CiWorkflow {
workflow: string;
}
function isCiWorkflow(t: unknown): t is CiWorkflow {
return isObject(t) && 'workflow' in t && typeof t.workflow === 'string' && !t.workflow.includes('..');
}
const CI_WORKFLOW_FILE = '.ci/ci.json';
const OCI_REGISTRY = 'oci.liz.coffee';
const PIPELINE_IMAGE = OCI_REGISTRY + '/emprespresso/ci_worker:release';
const READONLY_CREDENTIALS = { username: 'readonly', password: 'readonly' };
// use a different directory per job run
// even though the Laminar run is unique per job, there's potential for "children" we spawn
// to be a checkout_ci job as well. in which case, we don't want any conflicts with whatever
// the "parent" was doing, so we create a unique directory for each.
// i.e.
// Laminar Run: 57, CWD=/var/lib/laminar/run/57
// ci_pipeline (1000.uuidA)
// -> checkout_ci
// -> [...children]
// -> checkout_ci (1000.uuidB)
const run = `${Date.now()}.${crypto.randomUUID().replaceAll('-', '')}`;
const eitherJob = getRequiredEnvVars(['remote', 'refname', 'rev', 'executorLaminarPath']).mapRight(
(baseArgs) =>
<CheckoutCiJob>{
type: 'checkout_ci.js',
arguments: {
...baseArgs,
run,
returnPath: process.cwd(),
},
},
);
const afterJob = eitherJob.flatMapAsync((job) =>
Either.fromFailableAsync(() => rm(getWorkingDirectoryForCiJob(job), { recursive: true })),
);
const logTraceableJob = LogTraceable.of(eitherJob).flatMap(TraceUtil.withTrace(`checkout_ci.run.${run}`));
const ciRunMetric = Metric.fromName('checkout_ci.run');
await LogMetricTraceable.ofLogTraceable(logTraceableJob)
.flatMap(TraceUtil.withMetricTrace(ciRunMetric))
.map((tEitherJob) =>
tEitherJob.get().flatMapAsync((ciJob) => {
const wd = getWorkingDirectoryForCiJob(ciJob);
const fetchPackageJob = <FetchCodeJob>{
type: 'fetch_code',
arguments: {
remoteUrl: ciJob.arguments.remote,
checkout: ciJob.arguments.rev,
path: getSrcDirectoryForCiJob(ciJob),
},
};
return Either.fromFailableAsync<Error, CheckoutCiJob>(() =>
mkdir(wd, { recursive: true })
.then(() => process.chdir(wd))
.then(() => tEitherJob.move(fetchPackageJob).map(executeJob).get())
.then((e) =>
e.fold(
(err) => {
throw err;
},
() => ciJob,
),
),
);
}),
)
.map(async (tEitherCiJob) => {
const eitherCiJob = await tEitherCiJob.get();
const repoCiFileContents = await eitherCiJob.flatMapAsync((ciJob) =>
Either.fromFailableAsync<Error, string>(() =>
readFile(join(getSrcDirectoryForCiJob(ciJob), CI_WORKFLOW_FILE), 'utf-8'),
),
);
return repoCiFileContents
.flatMap((fileText) =>
Either.fromFailable<Error, CiWorkflow>(() => JSON.parse(fileText)).filter((json) => isCiWorkflow(json)),
)
.joinRight(eitherCiJob, (job: CheckoutCiJob, { workflow }) => ({
job,
commands: getPipelineGenerationCommand(job, workflow),
}));
})
.map(async (tEitherPipelineGenerationCommand) => {
const eitherJobCommand = await tEitherPipelineGenerationCommand.get();
const pipelineSerialized = await eitherJobCommand.flatMapAsync(({ commands }) =>
getStdoutMany(
tEitherPipelineGenerationCommand.move(commands).peek((t) => t.trace.trace(JSON.stringify(t.get()))),
),
);
return pipelineSerialized
.flatMap((results) => {
tEitherPipelineGenerationCommand.trace.trace(JSON.stringify(results));
const pipeline = results.at(-1)!;
return PipelineImpl.from(pipeline);
})
.joinRight(eitherJobCommand, (job, pipeline) => ({ job, pipeline }));
})
.peek(
TraceUtil.promiseify((tEitherPipeline) =>
tEitherPipeline
.get()
.mapRight((val) => val.pipeline.serialize())
.mapRight((pipeline) => `built the pipeline~ (◕ᴗ◕✿) let's make something amazing! ${pipeline}`)
.mapRight((msg) => tEitherPipeline.trace.trace(msg)),
),
)
.map(async (tEitherPipeline) => {
const eitherPipeline = await tEitherPipeline.get();
return eitherPipeline.flatMapAsync(({ pipeline, job }) =>
tEitherPipeline
.move(pipeline)
.map((p) =>
executePipeline(p, {
HOME: getWorkingDirectoryForCiJob(job),
}),
)
.get(),
);
})
.map(async (tCompletePipeline) => {
const completePipeline = await tCompletePipeline.get();
return completePipeline.fold(
(e) => Promise.reject(e),
() => afterJob,
);
})
.get();
function getWorkingDirectoryForCiJob(job: CheckoutCiJob) {
return `${job.arguments.returnPath}/${job.arguments.run}`;
}
function getSrcDirectoryForCiJob(job: CheckoutCiJob) {
return `${getWorkingDirectoryForCiJob(job)}/src`;
}
function getSrcDirectoryForChildContainer(job: CheckoutCiJob) {
// the container which runs the pipeline synthesizer (A) might be spawned by another container
// (B) ((which should be the one running this job)) by talking to the host's docker daemon
// (mounting /var/run/docker.sock) and executing the {@link getPipelineGenerationCommand}.
//
// so mounting {@link getSrcDirectoryForCiJob} has no meaning as it doesn't exist on the host;
// here we replace the path in (B) with the actual volume source on the host, where the src
// exists.
return getSrcDirectoryForCiJob(job).replace('/var/lib/laminar', job.arguments.executorLaminarPath);
}
function getPipelineGenerationCommand(
job: CheckoutCiJob,
pipelineGeneratorPath: string,
credentials = READONLY_CREDENTIALS,
registry = OCI_REGISTRY,
image = PIPELINE_IMAGE,
runFlags = '--rm --network none --cap-drop ALL --security-opt no-new-privileges'.split(' '),
): Array<Command> {
return [
`docker login --username ${credentials.username} --password ${credentials.password} ${registry}`.split(' '),
].concat([
[
'docker',
'run',
...runFlags,
...prependWith(
Object.entries(job.arguments).map(([key, val]) => `"${key}"="${val}"`),
'-e',
),
'-v',
`${getSrcDirectoryForChildContainer(job)}:/src`,
image,
`/src/${pipelineGeneratorPath}`,
],
]);
}
|
