Demo for query storing
Change-Id: I947bcac841992c3f6cfd01ab337c265b0d01cb70
diff --git a/node_modules/keyv/src/index.js b/node_modules/keyv/src/index.js
new file mode 100644
index 0000000..ab714b2
--- /dev/null
+++ b/node_modules/keyv/src/index.js
@@ -0,0 +1,99 @@
+'use strict';
+
+const EventEmitter = require('events');
+const JSONB = require('json-buffer');
+
+const loadStore = opts => {
+ const adapters = {
+ redis: '@keyv/redis',
+ mongodb: '@keyv/mongo',
+ mongo: '@keyv/mongo',
+ sqlite: '@keyv/sqlite',
+ postgresql: '@keyv/postgres',
+ postgres: '@keyv/postgres',
+ mysql: '@keyv/mysql'
+ };
+ if (opts.adapter || opts.uri) {
+ const adapter = opts.adapter || /^[^:]*/.exec(opts.uri)[0];
+ return new (require(adapters[adapter]))(opts);
+ }
+ return new Map();
+};
+
+class Keyv extends EventEmitter {
+ constructor(uri, opts) {
+ super();
+ this.opts = Object.assign(
+ { namespace: 'keyv' },
+ (typeof uri === 'string') ? { uri } : uri,
+ opts
+ );
+
+ if (!this.opts.store) {
+ const adapterOpts = Object.assign({}, this.opts);
+ this.opts.store = loadStore(adapterOpts);
+ }
+
+ if (typeof this.opts.store.on === 'function') {
+ this.opts.store.on('error', err => this.emit('error', err));
+ }
+
+ this.opts.store.namespace = this.opts.namespace;
+ }
+
+ _getKeyPrefix(key) {
+ return `${this.opts.namespace}:${key}`;
+ }
+
+ get(key) {
+ key = this._getKeyPrefix(key);
+ const store = this.opts.store;
+ return Promise.resolve()
+ .then(() => store.get(key))
+ .then(data => {
+ data = (typeof data === 'string') ? JSONB.parse(data) : data;
+ if (data === undefined) {
+ return undefined;
+ }
+ if (typeof data.expires === 'number' && Date.now() > data.expires) {
+ this.delete(key);
+ return undefined;
+ }
+ return data.value;
+ });
+ }
+
+ set(key, value, ttl) {
+ key = this._getKeyPrefix(key);
+ if (typeof ttl === 'undefined') {
+ ttl = this.opts.ttl;
+ }
+ if (ttl === 0) {
+ ttl = undefined;
+ }
+ const store = this.opts.store;
+
+ return Promise.resolve()
+ .then(() => {
+ const expires = (typeof ttl === 'number') ? (Date.now() + ttl) : null;
+ value = { value, expires };
+ return store.set(key, JSONB.stringify(value), ttl);
+ })
+ .then(() => true);
+ }
+
+ delete(key) {
+ key = this._getKeyPrefix(key);
+ const store = this.opts.store;
+ return Promise.resolve()
+ .then(() => store.delete(key));
+ }
+
+ clear() {
+ const store = this.opts.store;
+ return Promise.resolve()
+ .then(() => store.clear());
+ }
+}
+
+module.exports = Keyv;