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toolchains.ts

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import * as fs from 'fs';

import * as os from 'os';

import * as path from 'path';

import * as core from '@actions/core';

import * as io from '@actions/io';

import * as constants from './constants';

import {getBooleanInput} from './util';

import {create as xmlCreate} from 'xmlbuilder2';

interface JdkInfo {

version: string;

vendor: string;

id: string;

jdkHome: string;

}

export async function configureToolchains(

version: string,

distributionName: string,

jdkHome: string,

toolchainId?: string

) {

const vendor =

core.getInput(constants.INPUT_MVN_TOOLCHAIN_VENDOR) || distributionName;

const id = toolchainId || `${vendor}_${version}`;

const settingsDirectory =

core.getInput(constants.INPUT_SETTINGS_PATH) ||

path.join(os.homedir(), constants.M2_DIR);

const overwriteSettings = getBooleanInput(

constants.INPUT_OVERWRITE_SETTINGS,

true

);

await createToolchainsSettings({

jdkInfo: {

version,

vendor,

id,

jdkHome

},

settingsDirectory,

overwriteSettings

});

}

export async function createToolchainsSettings({

jdkInfo,

settingsDirectory,

overwriteSettings

}: {

jdkInfo: JdkInfo;

settingsDirectory: string;

overwriteSettings: boolean;

}) {

core.info(

`Creating ${constants.MVN_TOOLCHAINS_FILE} for JDK version ${jdkInfo.version} from ${jdkInfo.vendor}`

);

// when an alternate m2 location is specified use only that location (no .m2 directory)

// otherwise use the home/.m2/ path

await io.mkdirP(settingsDirectory);

const originalToolchains =

await readExistingToolchainsFile(settingsDirectory);

const updatedToolchains = generateToolchainDefinition(

originalToolchains,

jdkInfo.version,

jdkInfo.vendor,

jdkInfo.id,

jdkInfo.jdkHome

);

await writeToolchainsFileToDisk(

settingsDirectory,

updatedToolchains,

overwriteSettings

);

}

// only exported for testing purposes

export function generateToolchainDefinition(

original: string,

version: string,

vendor: string,

id: string,

jdkHome: string

) {

let xmlObj;

if (original?.length) {

xmlObj = xmlCreate(original)

.root()

.ele({

toolchain: {

type: 'jdk',

provides: {

version: `${version}`,

vendor: `${vendor}`,

id: `${id}`

},

configuration: {

jdkHome: `${jdkHome}`

}

}

});

} else

xmlObj = xmlCreate({

toolchains: {

'@xmlns': 'http://maven.apache.org/TOOLCHAINS/1.1.0',

'@xmlns:xsi': 'http://www.w3.org/2001/XMLSchema-instance',

'@xsi:schemaLocation':

'http://maven.apache.org/TOOLCHAINS/1.1.0 https://maven.apache.org/xsd/toolchains-1.1.0.xsd',

toolchain: [

{

type: 'jdk',

provides: {

version: `${version}`,

vendor: `${vendor}`,

id: `${id}`

},

configuration: {

jdkHome: `${jdkHome}`

}

}

]

}

});

return xmlObj.end({

format: 'xml',

wellFormed: false,

headless: false,

prettyPrint: true,

width: 80

});

}

async function readExistingToolchainsFile(directory: string) {

const location = path.join(directory, constants.MVN_TOOLCHAINS_FILE);

if (fs.existsSync(location)) {

return fs.readFileSync(location, {

encoding: 'utf-8',

flag: 'r'

});

}

return '';

}

async function writeToolchainsFileToDisk(

directory: string,

settings: string,

overwriteSettings: boolean

) {

const location = path.join(directory, constants.MVN_TOOLCHAINS_FILE);

const settingsExists = fs.existsSync(location);

if (settingsExists && overwriteSettings) {

core.info(`Overwriting existing file ${location}`);

} else if (!settingsExists) {

core.info(`Writing to ${location}`);

} else {

core.info(

`Skipping generation of ${location} because file already exists and overwriting is not enabled`

);

return;

}

return fs.writeFileSync(location, settings, {

encoding: 'utf-8',

flag: 'w'

});

}