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Copy pathvalidate.js
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244 lines (213 loc) · 8.93 KB
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'use strict';
const BbPromise = require('bluebird');
const path = require('path');
const fse = require('fs-extra');
const glob = require('glob');
const lib = require('./index');
const _ = require('lodash');
const Configuration = require('./Configuration');
/**
* For automatic entry detection we sort the found files to solve ambiguities.
* This should cover most of the cases. For complex setups the user should
* build his own entries with help of the other exports.
*/
const preferredExtensions = [ '.js', '.ts', '.jsx', '.tsx' ];
module.exports = {
validate() {
const getHandlerFile = handler => {
// Check if handler is a well-formed path based handler.
const handlerEntry = /(.*)\..*?$/.exec(handler);
if (handlerEntry) {
return handlerEntry[1];
}
};
const getEntryExtension = fileName => {
const files = glob.sync(`${fileName}.*`, {
cwd: this.serverless.config.servicePath,
nodir: true,
ignore: this.configuration.excludeFiles ? this.configuration.excludeFiles : undefined
});
if (_.isEmpty(files)) {
// If we cannot find any handler we should terminate with an error
throw new this.serverless.classes.Error(
`No matching handler found for '${fileName}' in '${this.serverless.config.servicePath}'. Check your service definition.`
);
}
// Move preferred file extensions to the beginning
const sortedFiles = _.uniq(
_.concat(
_.sortBy(_.filter(files, file => _.includes(preferredExtensions, path.extname(file))), a => _.size(a)),
files
)
);
if (_.size(sortedFiles) > 1) {
this.serverless.cli.log(
`WARNING: More than one matching handlers found for '${fileName}'. Using '${_.first(sortedFiles)}'.`
);
}
return path.extname(_.first(sortedFiles));
};
const getEntryForFunction = (name, serverlessFunction) => {
const handler = serverlessFunction.handler;
const handlerFile = getHandlerFile(handler);
if (!handlerFile) {
_.get(this.serverless, 'service.provider.name') !== 'google' &&
this.serverless.cli.log(
`\nWARNING: Entry for ${name}@${handler} could not be retrieved.\nPlease check your service config if you want to use lib.entries.`
);
return {};
}
const ext = getEntryExtension(handlerFile);
// Create a valid entry key
return {
[handlerFile]: `./${handlerFile}${ext}`
};
};
// Initialize plugin configuration
this.configuration = new Configuration(this.serverless.service.custom);
this.options.verbose &&
this.serverless.cli.log(`Using configuration:\n${JSON.stringify(this.configuration, null, 2)}`);
if (this.configuration.hasLegacyConfig) {
this.serverless.cli.log(
'Legacy configuration detected. Consider to use "custom.webpack" as object (see README).'
);
}
this.webpackConfig = this.configuration.config || this.configuration.webpackConfig;
// Expose entries - must be done before requiring the webpack configuration
const entries = {};
const functions = this.serverless.service.getAllFunctions();
if (this.options.function) {
const serverlessFunction = this.serverless.service.getFunction(this.options.function);
const entry = getEntryForFunction.call(this, this.options.function, serverlessFunction);
_.merge(entries, entry);
} else {
_.forEach(functions, (func, index) => {
const loadedFunc = this.serverless.service.getFunction(func);
const runtime = loadedFunc.runtime || this.serverless.service.provider.runtime;
if (runtime.match(/^node/)) {
const entry = getEntryForFunction.call(this, functions[index], loadedFunc);
_.merge(entries, entry);
}
});
}
// Expose service file and options
lib.serverless = this.serverless;
lib.options = this.options;
lib.entries = entries;
if (_.isString(this.webpackConfig)) {
const webpackConfigFilePath = path.join(this.serverless.config.servicePath, this.webpackConfig);
if (!this.serverless.utils.fileExistsSync(webpackConfigFilePath)) {
return BbPromise.reject(
new this.serverless.classes.Error(
'The webpack plugin could not find the configuration file at: ' + webpackConfigFilePath
)
);
}
try {
this.webpackConfig = require(webpackConfigFilePath);
} catch (err) {
this.serverless.cli.log(`Could not load webpack config '${webpackConfigFilePath}'`);
return BbPromise.reject(err);
}
}
// Intermediate function to handle async webpack config
const processConfig = _config => {
this.webpackConfig = _config;
// Default context
if (!this.webpackConfig.context) {
this.webpackConfig.context = this.serverless.config.servicePath;
}
// Default target
if (!this.webpackConfig.target) {
this.webpackConfig.target = 'node';
}
// Default output
if (!this.webpackConfig.output || _.isEmpty(this.webpackConfig.output)) {
const outputPath = path.join(this.serverless.config.servicePath, '.webpack');
this.webpackConfig.output = {
libraryTarget: 'commonjs',
path: outputPath,
filename: '[name].js'
};
}
// Default node
if (!this.webpackConfig.node || _.isEmpty(this.webpackConfig.node)) {
this.webpackConfig.node = false;
}
// Custom output path
if (this.options.out) {
this.webpackConfig.output.path = path.join(this.serverless.config.servicePath, this.options.out);
}
if (this.skipCompile) {
this.serverless.cli.log('Skipping build and using existing compiled output');
if (!fse.pathExistsSync(this.webpackConfig.output.path)) {
return BbPromise.reject(new this.serverless.classes.Error('No compiled output found'));
}
this.keepOutputDirectory = true;
}
if (!this.keepOutputDirectory) {
this.options.verbose && this.serverless.cli.log(`Removing ${this.webpackConfig.output.path}`);
fse.removeSync(this.webpackConfig.output.path);
}
this.webpackOutputPath = this.webpackConfig.output.path;
// In case of individual packaging we have to create a separate config for each function
if (_.has(this.serverless, 'service.package') && this.serverless.service.package.individually) {
this.options.verbose && this.serverless.cli.log('Using multi-compile (individual packaging)');
this.multiCompile = true;
if (this.webpackConfig.entry && !_.isEqual(this.webpackConfig.entry, entries)) {
return BbPromise.reject(
new this.serverless.classes.Error(
'Webpack entry must be automatically resolved when package.individually is set to true. ' +
'In webpack.config.js, remove the entry declaration or set entry to slsw.lib.entries.'
)
);
}
// Lookup associated Serverless functions
const allEntryFunctions = _.map(this.serverless.service.getAllFunctions(), funcName => {
const func = this.serverless.service.getFunction(funcName);
const handler = func.handler;
const handlerFile = path.relative('.', getHandlerFile(handler));
return {
handlerFile,
funcName,
func
};
});
this.entryFunctions = _.flatMap(entries, (value, key) => {
const entry = path.relative('.', value);
const entryFile = _.replace(entry, new RegExp(`${path.extname(entry)}$`), '');
const entryFuncs = _.filter(allEntryFunctions, [ 'handlerFile', entryFile ]);
if (_.isEmpty(entryFuncs)) {
// We have to make sure that for each entry there is an entry function item.
entryFuncs.push({});
}
_.forEach(entryFuncs, entryFunc => {
entryFunc.entry = {
key,
value
};
});
return entryFuncs;
});
this.webpackConfig = _.map(this.entryFunctions, entryFunc => {
const config = _.cloneDeep(this.webpackConfig);
config.entry = {
[entryFunc.entry.key]: entryFunc.entry.value
};
const compileName = entryFunc.funcName || _.camelCase(entryFunc.entry.key);
config.output.path = path.join(config.output.path, compileName);
return config;
});
} else {
this.webpackConfig.output.path = path.join(this.webpackConfig.output.path, 'service');
}
return BbPromise.resolve();
};
// Webpack config can be a Promise, If it's a Promise wait for resolved config object.
if (this.webpackConfig && _.isFunction(this.webpackConfig.then)) {
return BbPromise.resolve(this.webpackConfig.then(config => processConfig(config)));
} else {
return processConfig(this.webpackConfig);
}
}
};