add hive metastore http javascript client

Makefile

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+genthrift:
+	rm -rf ./src/gen-nodejs/*
+	mkdir -p ./src/gen-nodejs
+	thrift -r --gen js:node -out ./src/gen-nodejs ./thrift/hive_metastore.thrift
+	npm install -g dts-gen
+	npm install -g ./src/
+	dts-gen -m hive-metastore-http-client -f src/hive-metastore-http-client.d.ts

src/HiveMetaStoreClientFactory.js

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+var thrift = require("thrift");
+var ThriftHiveMetastore = require("./gen-nodejs/ThriftHiveMetastore.js");
+var kerberos = require('kerberos');
+const mechOID = kerberos.GSS_MECH_OID_KRB5;
+
+var HiveMetaStoreClient = function (host, port, options) {
+    var connection = thrift.createHttpConnection(host, port, options);
+    this.client = thrift.createHttpClient(ThriftHiveMetastore, connection);
+}
+
+HiveMetaStoreClient.prototype.get_all_databases = function (callback) {
+    return this.client.get_all_databases(callback);
+}
+
+HiveMetaStoreClient.prototype.get_databases = function (pattern, callback) {
+    return this.client.get_databases(pattern, callback);
+}
+
+HiveMetaStoreClient.prototype.get_database = function (dbName, callback) {
+    return this.client.get_database(dbName, callback);
+}
+
+HiveMetaStoreClient.prototype.get_all_tables = function (dbName, callback) {
+    return this.client.get_all_tables(dbName, callback);
+}
+
+HiveMetaStoreClient.prototype.get_tables_by_type = function (dbName, pattern, tblType, callback) {
+    return this.client.get_tables_by_type(dbName, pattern, tblType, callback);
+}
+
+HiveMetaStoreClient.prototype.get_table = function (dbName, tblName, callback) {
+    return this.client.get_table(dbName, tblName, callback);
+}
+
+HiveMetaStoreClient.prototype.get_partition_names = function (dbName, tblName, max_parts, callback) {
+    return this.client.get_partition_names(dbName, tblName, max_parts, callback);
+}
+
+HiveMetaStoreClient.prototype.get_partitions = function (dbName, tblName, max_parts, callback) {
+    return this.client.get_partitions(dbName, tblName, max_parts, callback);
+}
+
+async function getKerberosToken(hostname) {
+    let service = 'HTTP/' + hostname;
+    if(process.platform == 'linux'){
+       service = 'HTTP@' + hostname;
+    }
+    let kerberosClient = await kerberos.initializeClient(service, { mechOID });
+    let kerberosToken = await kerberosClient.step('');
+    return kerberosToken;
+}
+
+module.exports.DefaultOptions = {
+    transport: thrift.TBufferedTransport,
+    protocol: thrift.TJSONProtocol,
+    path: "/gateway/default/hmshttpthrift/api/hms",
+    headers: { "Connection": "close" },
+    https: true
+};
+
+module.exports.CreateClient = async function (host, port, authType, params, callback) {
+    if (!host || !port || !authType){
+        throw new Error('Input required for fields: {host, port, authType}');
+    }
+    let options = params.options || this.DefaultOptions;
+    process.env.NODE_TLS_REJECT_UNAUTHORIZED = "0";
+    if (authType == 'basic'){
+        if (!params.username || !params.password){
+            throw new Error('Input required for fields:{username, password} for HiveMetaStore API when using basic authTpye');
+        }
+        let auth = 'Basic ' + Buffer.from(params.username + ':' + params.password).toString('base64');
+        options.headers.Authorization = auth;
+    } else if(authType == 'kerberos'){
+        let kerberosToken = await getKerberosToken(host);
+        options.headers.Authorization = `Negotiate ${kerberosToken}`;
+    }
+    let client = new HiveMetaStoreClient(host, port, options);
+    if (typeof callback === 'function'){
+        callback(client)
+    }else{
+        return client
+    }
+}

src/gen-nodejs/fb303_types.js

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+//
+// Autogenerated by Thrift Compiler (0.9.1)
+//
+// DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
+//
+var Thrift = require('thrift').Thrift;
+
+var ttypes = module.exports = {};
+ttypes.fb_status = {
+'DEAD' : 0,
+'STARTING' : 1,
+'ALIVE' : 2,
+'STOPPING' : 3,
+'STOPPED' : 4,
+'WARNING' : 5
+};

src/package.json

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+{
+  "name": "hive-metastore-http-client",
+  "version": "1.0.0",
+  "description": "Hive MetaStore Thrift client library for HTTP Server",
+  "main": "HiveMetaStoreClientFactory.js",
+  "scripts": {
+    "build": "thrift thrift/hive_metastore.thrift",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "Microsoft Corporation",
+  "license": "MIT",
+  "dependencies": {
+    "kerberos": "^1.1.3",
+    "thrift": "^0.12.0"
+  }
+}

thrift/fb303.thrift

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF 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.
+ */
+
+/**
+ * fb303.thrift
+ */
+
+namespace java com.facebook.fb303
+namespace cpp facebook.fb303
+namespace perl Facebook.FB303
+namespace netcore Facebook.FB303.Test
+
+/**
+ * Common status reporting mechanism across all services
+ */
+enum fb_status {
+  DEAD = 0,
+  STARTING = 1,
+  ALIVE = 2,
+  STOPPING = 3,
+  STOPPED = 4,
+  WARNING = 5,
+}
+
+/**
+ * Standard base service
+ */
+service FacebookService {
+
+  /**
+   * Returns a descriptive name of the service
+   */
+  string getName(),
+
+  /**
+   * Returns the version of the service
+   */
+  string getVersion(),
+
+  /**
+   * Gets the status of this service
+   */
+  fb_status getStatus(),
+
+  /**
+   * User friendly description of status, such as why the service is in
+   * the dead or warning state, or what is being started or stopped.
+   */
+  string getStatusDetails(),
+
+  /**
+   * Gets the counters for this service
+   */
+  map<string, i64> getCounters(),
+
+  /**
+   * Gets the value of a single counter
+   */
+  i64 getCounter(1: string key),
+
+  /**
+   * Sets an option
+   */
+  void setOption(1: string key, 2: string value),
+
+  /**
+   * Gets an option
+   */
+  string getOption(1: string key),
+
+  /**
+   * Gets all options
+   */
+  map<string, string> getOptions(),
+
+  /**
+   * Returns a CPU profile over the given time interval (client and server
+   * must agree on the profile format).
+   */
+  string getCpuProfile(1: i32 profileDurationInSec),
+
+  /**
+   * Returns the unix time that the server has been running since
+   */
+  i64 aliveSince(),
+
+  /**
+   * Tell the server to reload its configuration, reopen log files, etc
+   */
+  oneway void reinitialize(),
+
+  /**
+   * Suggest a shutdown to the server
+   */
+  oneway void shutdown(),
+
+}