piston/api/src/runtime.js

78 lines
2.3 KiB
JavaScript

const logger = require('logplease').create('runtime');
const semver = require('semver');
const config = require('./config');
const globals = require('./globals');
const fss = require('fs');
const path = require('path');
const runtimes = [];
class Runtime {
constructor(package_dir){
let info = JSON.parse(
fss.read_file_sync(path.join(package_dir, 'pkg-info.json'))
);
const { language, version, author, build_platform, aliases } = info;
this.pkgdir = package_dir;
this.language = language;
this.version = semver.parse(version);
this.author = author;
this.aliases = aliases;
if (build_platform !== globals.platform) {
logger.warn(
`Package ${language}-${version} was built for platform ${build_platform}, ` +
`but our platform is ${globals.platform}`
);
}
logger.debug(`Package ${language}-${version} was loaded`);
runtimes.push(this);
}
get compiled() {
if (this._compiled === undefined) {
this._compiled = fss.exists_sync(path.join(this.pkgdir, 'compile'));
}
return this._compiled;
}
get env_vars() {
if (!this._env_vars) {
const env_file = path.join(this.pkgdir, '.env');
const env_content = fss.read_file_sync(env_file).toString();
this._env_vars = {};
env_content
.trim()
.split('\n')
.map(line => line.split('=',2))
.forEach(([key,val]) => {
this._env_vars[key.trim()] = val.trim();
});
}
return this._env_vars;
}
toString() {
return `${this.language}-${this.version.raw}`;
}
}
module.exports = runtimes;
module.exports.Runtime = Runtime;
module.exports.get_runtimes_matching_language_version = function(lang, ver){
return runtimes.filter(rt => (rt.language == lang || rt.aliases.includes(lang)) && semver.satisfies(rt.version, ver));
};
module.exports.get_latest_runtime_matching_language_version = function(lang, ver){
return module.exports.get_runtimes_matching_language_version(lang, ver)
.sort((a,b) => semver.rcompare(a.version, b.version))[0];
};