npmci/ts/manager.docker/mod.classes.dockerfile.ts

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import * as plugins from './mod.plugins.js';
import * as paths from '../npmci.paths.js';
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import { logger } from '../npmci.logging.js';
import { bash } from '../npmci.bash.js';
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import { DockerRegistry } from './mod.classes.dockerregistry.js';
import * as helpers from './mod.helpers.js';
import { NpmciDockerManager } from './index.js';
import { Npmci } from '../npmci.classes.npmci.js';
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/**
* class Dockerfile represents a Dockerfile on disk in npmci
*/
export class Dockerfile {
// STATIC
/**
* creates instance of class Dockerfile for all Dockerfiles in cwd
* @returns Promise<Dockerfile[]>
*/
public static async readDockerfiles(
npmciDockerManagerRefArg: NpmciDockerManager
): Promise<Dockerfile[]> {
const fileTree = await plugins.smartfile.fs.listFileTree(paths.cwd, 'Dockerfile*');
// create the Dockerfile array
const readDockerfilesArray: Dockerfile[] = [];
logger.log('info', `found ${fileTree.length} Dockerfiles:`);
console.log(fileTree);
for (const dockerfilePath of fileTree) {
const myDockerfile = new Dockerfile(npmciDockerManagerRefArg, {
filePath: dockerfilePath,
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read: true,
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});
readDockerfilesArray.push(myDockerfile);
}
return readDockerfilesArray;
}
/**
* sorts Dockerfiles into a dependency chain
* @param sortableArrayArg an array of instances of class Dockerfile
* @returns Promise<Dockerfile[]>
*/
public static async sortDockerfiles(sortableArrayArg: Dockerfile[]): Promise<Dockerfile[]> {
const done = plugins.smartpromise.defer<Dockerfile[]>();
logger.log('info', 'sorting Dockerfiles:');
const sortedArray: Dockerfile[] = [];
const cleanTagsOriginal = Dockerfile.cleanTagsArrayFunction(sortableArrayArg, sortedArray);
let sorterFunctionCounter: number = 0;
const sorterFunction = () => {
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sortableArrayArg.forEach((dockerfileArg) => {
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const cleanTags = Dockerfile.cleanTagsArrayFunction(sortableArrayArg, sortedArray);
if (
cleanTags.indexOf(dockerfileArg.baseImage) === -1 &&
sortedArray.indexOf(dockerfileArg) === -1
) {
sortedArray.push(dockerfileArg);
}
if (cleanTagsOriginal.indexOf(dockerfileArg.baseImage) !== -1) {
dockerfileArg.localBaseImageDependent = true;
}
});
if (sortableArrayArg.length === sortedArray.length) {
let counter = 1;
for (const dockerfile of sortedArray) {
logger.log('info', `tag ${counter}: -> ${dockerfile.cleanTag}`);
counter++;
}
done.resolve(sortedArray);
} else if (sorterFunctionCounter < 10) {
sorterFunctionCounter++;
sorterFunction();
}
};
sorterFunction();
return done.promise;
}
/**
* maps local Dockerfiles dependencies to the correspoding Dockerfile class instances
*/
public static async mapDockerfiles(sortedDockerfileArray: Dockerfile[]): Promise<Dockerfile[]> {
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sortedDockerfileArray.forEach((dockerfileArg) => {
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if (dockerfileArg.localBaseImageDependent) {
sortedDockerfileArray.forEach((dockfile2: Dockerfile) => {
if (dockfile2.cleanTag === dockerfileArg.baseImage) {
dockerfileArg.localBaseDockerfile = dockfile2;
}
});
}
});
return sortedDockerfileArray;
}
/**
* builds the correspoding real docker image for each Dockerfile class instance
*/
public static async buildDockerfiles(sortedArrayArg: Dockerfile[]) {
for (const dockerfileArg of sortedArrayArg) {
await dockerfileArg.build();
}
return sortedArrayArg;
}
/**
* tests all Dockerfiles in by calling class Dockerfile.test();
* @param sortedArrayArg Dockerfile[] that contains all Dockerfiles in cwd
*/
public static async testDockerfiles(sortedArrayArg: Dockerfile[]) {
for (const dockerfileArg of sortedArrayArg) {
await dockerfileArg.test();
}
return sortedArrayArg;
}
/**
* returns a version for a docker file
* @execution SYNC
*/
public static dockerFileVersion(dockerfileNameArg: string): string {
let versionString: string;
const versionRegex = /Dockerfile_([a-zA-Z0-9\.]*)$/;
const regexResultArray = versionRegex.exec(dockerfileNameArg);
if (regexResultArray && regexResultArray.length === 2) {
versionString = regexResultArray[1];
} else {
versionString = 'latest';
}
return versionString;
}
/**
* returns the docker base image for a Dockerfile
*/
public static dockerBaseImage(dockerfileContentArg: string): string {
const baseImageRegex = /FROM\s([a-zA-z0-9\/\-\:]*)\n?/;
const regexResultArray = baseImageRegex.exec(dockerfileContentArg);
return regexResultArray[1];
}
/**
* returns the docker tag
*/
public static getDockerTagString(
npmciDockerManagerRef: NpmciDockerManager,
registryArg: string,
repoArg: string,
versionArg: string,
suffixArg?: string
): string {
// determine wether the repo should be mapped accordingly to the registry
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const mappedRepo =
npmciDockerManagerRef.npmciRef.npmciConfig.getConfig().dockerRegistryRepoMap[registryArg];
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const repo = (() => {
if (mappedRepo) {
return mappedRepo;
} else {
return repoArg;
}
})();
// determine wether the version contais a suffix
let version = versionArg;
if (suffixArg) {
version = versionArg + '_' + suffixArg;
}
const tagString = `${registryArg}/${repo}:${version}`;
return tagString;
}
public static async getDockerBuildArgs(
npmciDockerManagerRef: NpmciDockerManager
): Promise<string> {
logger.log('info', 'checking for env vars to be supplied to the docker build');
let buildArgsString: string = '';
for (const key of Object.keys(
npmciDockerManagerRef.npmciRef.npmciConfig.getConfig().dockerBuildargEnvMap
)) {
const targetValue =
process.env[
npmciDockerManagerRef.npmciRef.npmciConfig.getConfig().dockerBuildargEnvMap[key]
];
buildArgsString = `${buildArgsString} --build-arg ${key}="${targetValue}"`;
}
return buildArgsString;
}
/**
*
*/
public static cleanTagsArrayFunction(
dockerfileArrayArg: Dockerfile[],
trackingArrayArg: Dockerfile[]
): string[] {
const cleanTagsArray: string[] = [];
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dockerfileArrayArg.forEach((dockerfileArg) => {
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if (trackingArrayArg.indexOf(dockerfileArg) === -1) {
cleanTagsArray.push(dockerfileArg.cleanTag);
}
});
return cleanTagsArray;
}
// INSTANCE
public npmciDockerManagerRef: NpmciDockerManager;
public filePath: string;
public repo: string;
public version: string;
public cleanTag: string;
public buildTag: string;
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public pushTag: string;
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public containerName: string;
public content: string;
public baseImage: string;
public localBaseImageDependent: boolean;
public localBaseDockerfile: Dockerfile;
constructor(
dockerManagerRefArg: NpmciDockerManager,
options: { filePath?: string; fileContents?: string | Buffer; read?: boolean }
) {
this.npmciDockerManagerRef = dockerManagerRefArg;
this.filePath = options.filePath;
this.repo =
this.npmciDockerManagerRef.npmciRef.npmciEnv.repo.user +
'/' +
this.npmciDockerManagerRef.npmciRef.npmciEnv.repo.repo;
this.version = Dockerfile.dockerFileVersion(plugins.path.parse(options.filePath).base);
this.cleanTag = this.repo + ':' + this.version;
this.buildTag = this.cleanTag;
this.containerName = 'dockerfile-' + this.version;
if (options.filePath && options.read) {
this.content = plugins.smartfile.fs.toStringSync(plugins.path.resolve(options.filePath));
}
this.baseImage = Dockerfile.dockerBaseImage(this.content);
this.localBaseImageDependent = false;
}
/**
* builds the Dockerfile
*/
public async build() {
logger.log('info', 'now building Dockerfile for ' + this.cleanTag);
const buildArgsString = await Dockerfile.getDockerBuildArgs(this.npmciDockerManagerRef);
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const buildCommand = `docker build --label="version=${
this.npmciDockerManagerRef.npmciRef.npmciConfig.getConfig().projectInfo.npm.version
}" -t ${this.buildTag} -f ${this.filePath} ${buildArgsString} .`;
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await bash(buildCommand);
return;
}
/**
* pushes the Dockerfile to a registry
*/
public async push(dockerRegistryArg: DockerRegistry, versionSuffix: string = null) {
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this.pushTag = Dockerfile.getDockerTagString(
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this.npmciDockerManagerRef,
dockerRegistryArg.registryUrl,
this.repo,
this.version,
versionSuffix
);
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await bash(`docker tag ${this.buildTag} ${this.pushTag}`);
await bash(`docker push ${this.pushTag}`);
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const imageDigest = (
await bash(`docker inspect --format="{{index .RepoDigests 0}}" ${this.pushTag}`)
).split('@')[1];
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console.log(`The image ${this.pushTag} has digest ${imageDigest}`);
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await this.npmciDockerManagerRef.npmciRef.cloudlyConnector.announceDockerContainer({
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registryUrl: this.pushTag,
tag: this.buildTag,
labels: [],
version:
this.npmciDockerManagerRef.npmciRef.npmciConfig.getConfig().projectInfo.npm.version,
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});
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}
/**
* pulls the Dockerfile from a registry
*/
public async pull(registryArg: DockerRegistry, versionSuffixArg: string = null) {
const pullTag = Dockerfile.getDockerTagString(
this.npmciDockerManagerRef,
registryArg.registryUrl,
this.repo,
this.version,
versionSuffixArg
);
await bash(`docker pull ${pullTag}`);
await bash(`docker tag ${pullTag} ${this.buildTag}`);
}
/**
* tests the Dockerfile;
*/
public async test() {
const testFile: string = plugins.path.join(paths.NpmciTestDir, 'test_' + this.version + '.sh');
const testFileExists: boolean = plugins.smartfile.fs.fileExistsSync(testFile);
if (testFileExists) {
// run tests
await bash(
`docker run --name npmci_test_container --entrypoint="bash" ${this.buildTag} -c "mkdir /npmci_test"`
);
await bash(`docker cp ${testFile} npmci_test_container:/npmci_test/test.sh`);
await bash(`docker commit npmci_test_container npmci_test_image`);
await bash(`docker run --entrypoint="bash" npmci_test_image -x /npmci_test/test.sh`);
await bash(`docker rm npmci_test_container`);
await bash(`docker rmi --force npmci_test_image`);
} else {
logger.log('warn', 'skipping tests for ' + this.cleanTag + ' because no testfile was found!');
}
}
/**
* gets the id of a Dockerfile
*/
public async getId() {
const containerId = await bash(
'docker inspect --type=image --format="{{.Id}}" ' + this.buildTag
);
return containerId;
}
}