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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 | 40x 40x 12x 12x 12x 12x 12x 12x 12x 38x 38x 37x 37x 37x 1x 36x 6x 12x 12x 12x 12x 2x 2x 12x 12x 12x 12x 12x 12x 3x 11x 11x 11x 8x 8x 3x 3x 3x 3x 3x 3x 24x 24x 24x 24x 24x 6x 6x 24x 24x 24x 24x 11x 11x 11x 12x 12x 11x 11x 12x 32x 32x 7x 8x 7x 7x 7x 11x 11x 11x 14x 14x 14x 14x 14x 11x | import { PouchDB } from 'rxdb'; import { BehaviorSubject } from 'rxjs'; import keyCompression from 'rxdb/plugins/key-compression'; export default { rxdb: true, prototypes: {}, overwritable: { createKeyCompressor(...args) { const ans = keyCompression.overwritable.createKeyCompressor(...args); ans._table = { ...ans.table, rx_model: 'rx_model' }; return ans; } }, hooks: { createRxDatabase(database) { database.replications = []; database.replicate = function replicate(...args) { const replication = new Replication(database.collections, ...args); database.replications.push(replication); const index = database.replications.length - 1; replication.destroy = async function destroy() { await replication.close(); database.replications = database.replications .slice(0, index) .concat(database.replications.slice(index + 1)); }; return replication; }; }, preCreateRxCollection(model) { const name = model.name; if (!name) throw Error('RxCollection(s) must have a "name" property'); Iif (!model.schema || !model.schema.properties) { throw Error( 'RxCollection(s) must have a a "schema" property, with a "properties" key' ); } const rxModel = model.schema.properties.rx_model; if (rxModel && (rxModel.type !== 'string' || rxModel.default !== name)) { throw Error('Schema properties cannot be called "rx_model"'); } model.schema.properties.rx_model = { type: 'string', enum: [name], default: name }; } } }; const isDevelopment = (process.env.NODE_ENV !== 'production' && process.env.NODE_ENV !== 'test') || process.env.NODE_ENV === 'development'; class Replication { constructor(collections, remote, collectionNames, direction, options = {}) { this.remote = remote; this.directon = direction; this.options = options; this.collections = !collectionNames ? collections : collectionNames.reduce((acc, key) => { if (collections[key]) acc[key] = collections[key]; return acc; }, {}); this.replicationStates = []; this._pReplicationStates = Promise.resolve([]); this._subscribers = []; this._states = []; this.alive = false; this._aliveSubject = new BehaviorSubject(false); } get alive$() { return this._aliveSubject.asObservable(); } async connect() { await this.close(); try { await this._createFilter(this.remote); await this._sync(); return true; } catch (e) { // eslint-disable-next-line no-console Iif (isDevelopment) console.error(e); this._interval = setInterval(() => { this._createFilter(this.remote) .then(() => { clearInterval(this._interval); this._sync(); }) // eslint-disable-next-line no-console .catch((e) => isDevelopment && console.error(e)); }, 5000); return false; } } async close() { clearInterval(this._interval); this._subscribers.forEach((x) => x.unsubscribe()); this._subscribers = []; this._states = []; if (this.alive) { this.alive = false; this._aliveSubject.next(false); } await this._pReplicationStates.then((arr) => { return Promise.all(arr.map((x) => x.cancel())); }); this._pReplicationStates = Promise.resolve([]); this.replicationStates = []; } // Private async _sync() { const collections = this.collections; const collectionNames = Object.keys(collections); const promises = collectionNames.map((name) => { return collections[name].sync({ remote: this.remote, direction: this.direction, options: { ...this.options, live: this.options.live || true, retry: this.options.retry || true, filter: 'app/by_model', query_params: { rx_model: name } } }); }); const allAlive = promises.map(() => false); this._pReplicationStates = Promise.all(promises) .then((arr) => { arr.forEach((rep, i) => { this._subscribers.push( rep.alive$.subscribe((val) => { const repAlive = allAlive[i]; if (repAlive === val) return; allAlive[i] = val; const alive = allAlive.reduce((acc, x) => acc & x, true); Iif (alive === this.alive) return; this.alive = alive; this._aliveSubject.next(val); }) ); }); return arr; }) .then((arr) => (this.replicationStates = arr)); await this._pReplicationStates; } async _createFilter() { // https://pouchdb.com/2015/04/05/filtered-replication.html const remoteIsUrl = typeof this.remote === 'string'; const db = remoteIsUrl ? new PouchDB(this.remote) : this.remote; const doc = { version: 0, _id: '_design/app', filters: { // not doing fn.toString() as istambul code // on tests breaks it by_model: `function(doc, req) { return ( doc._id === '_design/app' || doc.rx_model === req.query.rx_model ); }` } }; await db .get('_design/app') .then(({ version, _rev }) => { return version < doc.version ? db.put({ ...doc, _rev }) : true; }) .catch(() => db.put(doc)); if (remoteIsUrl) db.close(); } } |