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It's a\n // function so we can construct a collection simply by calling it\n // like horizon('my_collection')\n function horizon(name) {\n return new Collection(sendRequest, name, lazyWrites)\n }\n\n horizon.dispose = () => {\n socket.complete()\n }\n\n // Dummy subscription to force it to connect to the\n // server. Optionally provide an error handling function if the\n // socket experiences an error.\n // Note: Users of the Observable interface shouldn't need this\n horizon.connect = (\n onError = err => { console.error(`Received an error: ${err}`) }\n ) => {\n socket.subscribe(\n () => {},\n onError\n )\n }\n\n // Either subscribe to status updates, or return an observable with\n // the current status and all subsequent status changes.\n horizon.status = subscribeOrObservable(socket.status)\n\n // Convenience method for finding out when disconnected\n horizon.onDisconnected = subscribeOrObservable(\n socket.status::filter(x => x.type === 'disconnected'))\n\n // Convenience method for finding out when opening\n horizon.onConnected = subscribeOrObservable(\n socket.status::filter(x => x.type === 'connected'))\n\n // Convenience method for finding out when ready\n horizon.onReady = subscribeOrObservable(\n socket.status::filter(x => x.type === 'ready'))\n\n // Convenience method for finding out when an error occurs\n horizon.onSocketError = subscribeOrObservable(\n socket.status::filter(x => x.type === 'error'))\n\n horizon._authMethods = null\n horizon._horizonPath = path\n horizon.authEndpoint = authEndpoint\n horizon.hasAuthToken = ::tokenStorage.hasAuthToken\n\n return horizon\n\n // Sends a horizon protocol request to the server, and pulls the data\n // portion of the response out.\n function sendRequest(type, options) {\n // Both remove and removeAll use the type 'remove' in the protocol\n const normalizedType = type === 'removeAll' ? 'remove' : type\n return socket\n .makeRequest({ type: normalizedType, options }) // send the raw request\n ::concatMap(resp => {\n // unroll arrays being returned\n if (resp.data) {\n return Observable::from(resp.data)\n } else {\n // Still need to emit a document even if we have no new data\n return Observable::from([ { state: resp.state, type: resp.type } ])\n }\n })\n ::_catch(e => Observable.create(observer => {\n observer.error(e)\n })) // on error, strip error message\n }\n}\n\nfunction subscribeOrObservable(observable) {\n return (...args) => {\n if (args.length > 0) {\n return observable.subscribe(...args)\n } else {\n return observable\n }\n }\n}\n\n\nHorizon.log = log\nHorizon.logError = logError\nHorizon.enableLogging = enableLogging\nHorizon.Socket = HorizonSocket\nHorizon.clearAuthTokens = clearAuthTokens\n\nmodule.exports = Horizon\n"]} |