Files
elasticsearch-js/scripts/utils/generateMain.js
Tomas Della Vedova d7d55e1146 Updated code generation (#1441)
* Updated code generation

* Nit
2021-04-07 15:24:45 +02:00

300 lines
12 KiB
JavaScript

/*
* Licensed to Elasticsearch B.V. under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch B.V. licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/* eslint-disable no-template-curly-in-string */
/* eslint camelcase: 0 */
'use strict'
const { readdirSync } = require('fs')
const { join } = require('path')
const dedent = require('dedent')
const deepmerge = require('deepmerge')
function genFactory (folder, specFolder, namespaces) {
// get all the API files
// const apiFiles = readdirSync(folder)
const apiFiles = readdirSync(specFolder)
.filter(file => file !== '_common.json')
.filter(file => !file.includes('deprecated'))
.sort()
const types = apiFiles
.map(file => {
const name = file
.slice(0, -5)
.replace(/\.([a-z])/g, k => k[1].toUpperCase())
.replace(/_([a-z])/g, k => k[1].toUpperCase())
return file
.slice(0, -5) // remove `.json` extension
.split('.')
.reverse()
.reduce((acc, val) => {
const spec = readSpec(specFolder, file.slice(0, -5))
const isHead = isHeadMethod(spec, file.slice(0, -5))
const body = hasBody(spec, file.slice(0, -5))
const methods = acc === null ? buildMethodDefinition({ kibana: false }, val, name, body, isHead, spec) : null
const obj = {}
if (methods) {
for (const m of methods) {
obj[m.key] = m.val
}
} else {
obj[val] = acc
if (isSnakeCased(val)) {
obj[camelify(val)] = acc
}
}
return obj
}, null)
})
.reduce((acc, val) => deepmerge(acc, val), {})
const kibanaTypes = apiFiles
.map(file => {
const name = file
.slice(0, -5)
.replace(/\.([a-z])/g, k => k[1].toUpperCase())
.replace(/_([a-z])/g, k => k[1].toUpperCase())
return file
.slice(0, -5) // remove `.json` extension
.split('.')
.reverse()
.reduce((acc, val) => {
const spec = readSpec(specFolder, file.slice(0, -5))
const isHead = isHeadMethod(spec, file.slice(0, -5))
const body = hasBody(spec, file.slice(0, -5))
const methods = acc === null ? buildMethodDefinition({ kibana: true }, val, name, body, isHead, spec) : null
const obj = {}
if (methods) {
for (const m of methods) {
obj[m.key] = m.val
}
} else {
obj[camelify(val)] = acc
}
return obj
}, null)
})
.reduce((acc, val) => deepmerge(acc, val), {})
// serialize the type object
const typesStr = Object.keys(types)
.map(key => {
const line = ` ${key}: ${JSON.stringify(types[key], null, 4)}`
if (line.slice(-1) === '}') {
return line.slice(0, -1) + ' }'
}
return line
})
.join('\n')
// remove useless quotes and commas
.replace(/"/g, '')
.replace(/,$/gm, '')
const kibanaTypesStr = Object.keys(kibanaTypes)
.map(key => {
const line = ` ${key}: ${JSON.stringify(kibanaTypes[key], null, 4)}`
if (line.slice(-1) === '}') {
return line.slice(0, -1) + ' }'
}
return line
})
.join('\n')
// remove useless quotes and commas
.replace(/"/g, '')
.replace(/,$/gm, '')
let apisStr = ''
const getters = []
for (const namespace in namespaces) {
if (namespaces[namespace].length > 0) {
getters.push(`${camelify(namespace)}: {
get () {
if (this[k${toPascalCase(camelify(namespace))}] === null) {
this[k${toPascalCase(camelify(namespace))}] = new ${toPascalCase(camelify(namespace))}Api(this.transport, this[kConfigurationError])
}
return this[k${toPascalCase(camelify(namespace))}]
}
},\n`)
if (namespace.includes('_')) {
getters.push(`${namespace}: { get () { return this.${camelify(namespace)} } },\n`)
}
} else {
apisStr += `ESAPI.prototype.${camelify(namespace)} = ${camelify(namespace)}Api\n`
if (namespace.includes('_')) {
getters.push(`${namespace}: { get () { return this.${camelify(namespace)} } },\n`)
}
}
}
apisStr += '\nObject.defineProperties(ESAPI.prototype, {\n'
for (const getter of getters) {
apisStr += getter
}
apisStr += '})'
let modules = ''
let symbols = ''
let symbolsInstance = ''
for (const namespace in namespaces) {
if (namespaces[namespace].length > 0) {
modules += `const ${toPascalCase(camelify(namespace))}Api = require('./api/${namespace}')\n`
symbols += `const k${toPascalCase(camelify(namespace))} = Symbol('${toPascalCase(camelify(namespace))}')\n`
symbolsInstance += `this[k${toPascalCase(camelify(namespace))}] = null\n`
} else {
modules += `const ${camelify(namespace)}Api = require('./api/${namespace}')\n`
}
}
const fn = dedent`
/*
* Licensed to Elasticsearch B.V. under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch B.V. licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
'use strict'
${modules}
const { kConfigurationError } = require('./utils')
${symbols}
function ESAPI (opts) {
this[kConfigurationError] = opts.ConfigurationError
${symbolsInstance}
}
${apisStr}
module.exports = ESAPI
`
// new line at the end of file
return { fn: fn + '\n', types: typesStr, kibanaTypes: kibanaTypesStr }
}
// from snake_case to camelCase
function camelify (str) {
return str.replace(/_([a-z])/g, k => k[1].toUpperCase())
}
function isSnakeCased (str) {
return !!~str.indexOf('_')
}
function toPascalCase (str) {
return str[0].toUpperCase() + str.slice(1)
}
function buildMethodDefinition (opts, api, name, hasBody, isHead, spec) {
const Name = toPascalCase(name)
const { content_type } = spec[Object.keys(spec)[0]].headers
const bodyType = content_type && content_type.includes('application/x-ndjson') ? 'RequestNDBody' : 'RequestBody'
const responseType = isHead ? 'boolean' : 'Record<string, any>'
const defaultBodyType = content_type && content_type.includes('application/x-ndjson') ? 'Record<string, any>[]' : 'Record<string, any>'
if (opts.kibana) {
if (hasBody) {
return [
{ key: `${camelify(api)}<TResponse = ${responseType}, TRequestBody extends ${bodyType} = ${defaultBodyType}, TContext = Context>(params?: RequestParams.${Name}<TRequestBody>, options?: TransportRequestOptions)`, val: 'TransportRequestPromise<ApiResponse<TResponse, TContext>>' }
]
} else {
return [
{ key: `${camelify(api)}<TResponse = ${responseType}, TContext = Context>(params?: RequestParams.${Name}, options?: TransportRequestOptions)`, val: 'TransportRequestPromise<ApiResponse<TResponse, TContext>>' }
]
}
}
if (hasBody) {
let methods = [
{ key: `${api}<TResponse = ${responseType}, TRequestBody extends ${bodyType} = ${defaultBodyType}, TContext = Context>(params?: RequestParams.${Name}<TRequestBody>, options?: TransportRequestOptions)`, val: 'TransportRequestPromise<ApiResponse<TResponse, TContext>>' },
{ key: `${api}<TResponse = ${responseType}, TRequestBody extends ${bodyType} = ${defaultBodyType}, TContext = Context>(callback: callbackFn<TResponse, TContext>)`, val: 'TransportRequestCallback' },
{ key: `${api}<TResponse = ${responseType}, TRequestBody extends ${bodyType} = ${defaultBodyType}, TContext = Context>(params: RequestParams.${Name}<TRequestBody>, callback: callbackFn<TResponse, TContext>)`, val: 'TransportRequestCallback' },
{ key: `${api}<TResponse = ${responseType}, TRequestBody extends ${bodyType} = ${defaultBodyType}, TContext = Context>(params: RequestParams.${Name}<TRequestBody>, options: TransportRequestOptions, callback: callbackFn<TResponse, TContext>)`, val: 'TransportRequestCallback' }
]
if (isSnakeCased(api)) {
methods = methods.concat([
{ key: `${camelify(api)}<TResponse = ${responseType}, TRequestBody extends ${bodyType} = ${defaultBodyType}, TContext = Context>(params?: RequestParams.${Name}<TRequestBody>, options?: TransportRequestOptions)`, val: 'TransportRequestPromise<ApiResponse<TResponse, TContext>>' },
{ key: `${camelify(api)}<TResponse = ${responseType}, TRequestBody extends ${bodyType} = ${defaultBodyType}, TContext = Context>(callback: callbackFn<TResponse, TContext>)`, val: 'TransportRequestCallback' },
{ key: `${camelify(api)}<TResponse = ${responseType}, TRequestBody extends ${bodyType} = ${defaultBodyType}, TContext = Context>(params: RequestParams.${Name}<TRequestBody>, callback: callbackFn<TResponse, TContext>)`, val: 'TransportRequestCallback' },
{ key: `${camelify(api)}<TResponse = ${responseType}, TRequestBody extends ${bodyType} = ${defaultBodyType}, TContext = Context>(params: RequestParams.${Name}<TRequestBody>, options: TransportRequestOptions, callback: callbackFn<TResponse, TContext>)`, val: 'TransportRequestCallback' }
])
}
return methods
} else {
let methods = [
{ key: `${api}<TResponse = ${responseType}, TContext = Context>(params?: RequestParams.${Name}, options?: TransportRequestOptions)`, val: 'TransportRequestPromise<ApiResponse<TResponse, TContext>>' },
{ key: `${api}<TResponse = ${responseType}, TContext = Context>(callback: callbackFn<TResponse, TContext>)`, val: 'TransportRequestCallback' },
{ key: `${api}<TResponse = ${responseType}, TContext = Context>(params: RequestParams.${Name}, callback: callbackFn<TResponse, TContext>)`, val: 'TransportRequestCallback' },
{ key: `${api}<TResponse = ${responseType}, TContext = Context>(params: RequestParams.${Name}, options: TransportRequestOptions, callback: callbackFn<TResponse, TContext>)`, val: 'TransportRequestCallback' }
]
if (isSnakeCased(api)) {
methods = methods.concat([
{ key: `${camelify(api)}<TResponse = ${responseType}, TContext = Context>(params?: RequestParams.${Name}, options?: TransportRequestOptions)`, val: 'TransportRequestPromise<ApiResponse<TResponse, TContext>>' },
{ key: `${camelify(api)}<TResponse = ${responseType}, TContext = Context>(callback: callbackFn<TResponse, TContext>)`, val: 'TransportRequestCallback' },
{ key: `${camelify(api)}<TResponse = ${responseType}, TContext = Context>(params: RequestParams.${Name}, callback: callbackFn<TResponse, TContext>)`, val: 'TransportRequestCallback' },
{ key: `${camelify(api)}<TResponse = ${responseType}, TContext = Context>(params: RequestParams.${Name}, options: TransportRequestOptions, callback: callbackFn<TResponse, TContext>)`, val: 'TransportRequestCallback' }
])
}
return methods
}
}
function hasBody (spec, api) {
return !!spec[api].body
}
function isHeadMethod (spec, api) {
const { paths } = spec[api].url
const methods = []
for (const path of paths) {
for (const method of path.methods) {
if (!methods.includes(method)) {
methods.push(method)
}
}
}
return methods.length === 1 && methods[0] === 'HEAD'
}
function readSpec (specFolder, file) {
try {
return require(join(specFolder, file))
} catch (err) {
throw new Error(`Cannot read spec file ${file}`)
}
}
module.exports = genFactory