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maven-files.js
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maven-files.js
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"use strict";
const {MavenRepository} = require("./maven-types");
const {
evaluateXPathToNodes,
evaluateXPathToString,
evaluateXPathToFirstNode,
evaluateXPathToStrings
} = require("fontoxpath");
const {sync} = require('slimdom-sax-parser')
class MavenXmlFile {
document;
logger;
constructor(xmlText, logger) {
this.logger = logger;
this.document = sync(xmlText)
}
}
class MavenSettingsFile extends MavenXmlFile {
#NO_MATCH_TRY_NEXT = Symbol();
#NO_MATCH_STOP = Symbol();
#MATCH = Symbol();
#MATCH_WILDCARD = Symbol();
#mirrorList;
#activeProfileRepositories;
constructor(xmlText, logger) {
super(xmlText, logger);
this.#mirrorList = this.#createMirrorList() || [];
this.logger.debug('Extracted ' + this.#mirrorList.length + ' mirrors.')
this.#activeProfileRepositories = this.#extractActiveProfileRepositories() || []
this.logger.debug('Extracted ' + this.#activeProfileRepositories.length + ' repositories.')
}
getActiveProfileRepositories() {
return this.#activeProfileRepositories;
}
/**
*
* @returns {MavenRepository[]}
*/
#extractActiveProfileRepositories() {
this.logger.debug('Settings file parsed ...');
const activeProfileNamePredicate = evaluateXPathToStrings(
'/settings/activeProfiles/activeProfile/text(),/settings/profiles/profile[activation/activeByDefault/text()="true"]/id/text()',
this.document
).map(profile => `id="${profile}"`)
.join(" or ");
this.logger.debug('Found active profiles: ' + activeProfileNamePredicate);
if (!activeProfileNamePredicate) {
return [];
}
const activeProfileRepoNodes = evaluateXPathToNodes('/settings/profiles/profile[' + activeProfileNamePredicate + ']/repositories/repository', this.document)
let activeProfileRepos = activeProfileRepoNodes?.map(node => {
this.logger.debug('Found active profile repo: ' + node);
const repoId = evaluateXPathToString('id/text()', node);
const baseUrl = evaluateXPathToString('url/text()', node);
return this.#createRepositoryWithResolvedMirrors(repoId, baseUrl);
})
// mirrors might have made some repositories identical
return activeProfileRepos?.filter((repo, index, array) => {
for (let i = index - 1; i >= 0; i--) {
if (array[i].baseUrl === repo.baseUrl) {
return false;
}
}
return true;
});
}
/**
*
* @param {string} repoId
* @param {string} repoUrl
* @returns {MavenRepository}
*/
#createRepositoryWithResolvedMirrors(repoId, repoUrl) {
const mirror = this.#findMatchingMirror(repoId, repoUrl);
const mavenRepository = new MavenRepository({
baseUrl: mirror ? mirror.url : repoUrl,
fetchOptions: this.#createFetchOptionsForServer(mirror ? mirror.id : repoId)
});
this.logger.info('Found repo in maven settings: ' + mavenRepository);
return mavenRepository;
}
/**
*
* @returns {id, name, url, mirrorOf, mirrorOfList}[]
*/
#createMirrorList() {
return evaluateXPathToNodes('/settings/mirrors/mirror', this.document)
?.map(element => {
return {
id: evaluateXPathToString('id/text()', element),
name: evaluateXPathToString('name/text()', element),
url: evaluateXPathToString('url/text()', element),
mirrorOf: evaluateXPathToString('mirrorOf/text()', element),
}
})
.map(mirror => {
const mirroredIds = mirror.mirrorOf.split(',');
return Object.assign(
mirror,
{
mirrorOfList: mirroredIds.map(id => {
return {
pattern: id.startsWith('!') ? id.substr(1) : id,
negate: id.startsWith('!')
};
})
});
});
}
#findMatchingMirror(repoId, repoUrl) {
// need to defer wildcards behind non-wildcards according to maven docs:
// > The position of wildcards within a comma separated list of repository
// > identifiers is not important as the wildcards defer to further processing
// > and explicit includes or excludes stop the processing, overruling any wildcard match.
MIRROR_LIST: for (const mirror of this.#mirrorList) {
let deferredMatch = false;
for (const mirrorOf of mirror.mirrorOfList) {
switch (this.#mirrorMatches(mirrorOf.pattern, mirrorOf.negate, repoId, repoUrl)) {
case this.#MATCH:
this.logger.debug('Found mirror of ' + repoId + ': ' + mirror.id);
return mirror;
case this.#MATCH_WILDCARD:
deferredMatch = true;
continue;
case this.#NO_MATCH_TRY_NEXT:
continue;
case this.#NO_MATCH_STOP:
continue MIRROR_LIST;
}
}
// no direct match terminated the loop yet, look for a wildcard match now:
if (deferredMatch) {
this.logger.debug('Found mirror of ' + repoId + ': ' + mirror.id);
return mirror;
}
}
return null;
}
/**
*
* @param {string} pattern
* @param {boolean} negated
* @param {string} repoId
* @param {string} repoUrl
* @returns {symbol}
*/
#mirrorMatches(pattern, negated, repoId, repoUrl) {
if (pattern === '*') {
return negated ? this.#NO_MATCH_TRY_NEXT : this.#MATCH_WILDCARD;
}
const isLocalHost = repoUrl.match(/^https?:\/\/localhost[:\/].*/);
const isHttp = repoUrl.match(/^http:\/\/.*/);
if (pattern === 'external:*' && !isLocalHost) {
return negated ? this.#NO_MATCH_TRY_NEXT : this.#MATCH_WILDCARD;
}
if (pattern === 'external:http:*' && isHttp && !isLocalHost) {
return negated ? this.#NO_MATCH_TRY_NEXT : this.#MATCH_WILDCARD;
}
if (pattern === repoId) {
return negated ? this.#NO_MATCH_STOP : this.#MATCH;
}
return negated ? this.#MATCH : this.#NO_MATCH_TRY_NEXT;
}
#createFetchOptionsForServer(repoId) {
const fetchOptions = {};
const serverNode = evaluateXPathToFirstNode('/settings/servers/server[id="' + repoId + '"]', this.document);
if (serverNode) {
this.logger.debug('Found active profile repo server: ' + serverNode);
const userName = evaluateXPathToString('username/text()', serverNode);
const password = evaluateXPathToString('password/text()', serverNode);
const buff = Buffer.from(userName + ':' + password, 'utf-8');
fetchOptions.headers = {
'Authorization': 'Basic ' + buff.toString('base64')
}
}
return fetchOptions;
}
}
class MavenMetaDataFile extends MavenXmlFile {
/**
*
* @param {string} classifier
* @param {string} extension
* @returns {string}
*/
getLatestSnapshotVersion(classifier, extension) {
return evaluateXPathToString(
'//snapshotVersion[extension="'
+ extension
+ '"][classifier="'
+ classifier
+ '"]/value/text()', this.document)
}
/**
* @returns {string[]}
*/
getVersions() {
return evaluateXPathToStrings('//versions/version/text()', this.document);
}
}
module.exports = {
MavenSettingsFile,
MavenMetaDataFile
}