Building Real-Time Web Applications Using ArcGIS GeoEvent Processor

Transcription

1 Building Real-Time Web Applications Using ArcGIS GeoEvent Processor Ryan Elliott Software Engineer ArcGIS GeoEvent Processor for Server James Cardona Web Developer DC Development Center

2 ArcGIS GeoEvent Processor for Server Integrates and exploits real-time data Integrates real-time streaming data into ArcGIS Performs continuous processing and real-time analytics Sends updates and alerts to those who need it where they need it GeoEvent Services GeoEvent Processor ws:// Inputs ArcGIS Server Outputs

3 ArcGIS Web API for JavaScript Gives developers tools to add GIS functionality to web applications - Interactive maps for visualizing data. - Widgets for finding addresses, editing data, making legends - Analysis Run a model and view results, enrich existing data with detailed demographic information - Embed into existing web page or make new focused application

4 Demo Demonstration Field Worker Monitoring

5 Real-Time Data on the Map SCREENSHOT

6 Special Handling of Alerts SCREENSHOT

7 Selectively Display Historical Data SCREENSHOT

8 Receiving Real-Time Data Ryan Elliott

9 Receiving real-time data Connectors You can easily integrate real-time streaming data with ArcGIS by using an input connector. GeoEvent Processor Inputs GeoEvent Services Outputs You can create your own connectors. Receive RSS Twitter GNIP Receive text from a TCP Socket Instagram Geofeedia Receive text from a UDP Socket CAP exactearth Out of the Box ws:// ws:// Receive Features on a REST endpoint Receive JSON on a REST endpoint Receive JSON on a Web Socket Receive JSON on external Web Socket Poll an ArcGIS Server for Features Esri Gallery Cursor-on-Target VMF GeoMessage ActiveMQ RabbitMQ Partner Gallery ASDI (FAA) OSIsoft Valarm Harris CompassCom Poll an external website for JSON NMEA NetworkFleet.csv Watch a folder for new.csv files TAIP (Trimble) Zonar.json Watch a folder for new.json files RAP (Sierra Wireless)

10 Demo Demonstration Connecting to Real-Time Data Feeds

11 Applying Real-Time Analytics Ryan Elliott

12 Applying real-time analytics GeoEvent Services A GeoEvent Service configures the flow of GeoEvents, - the Filtering and GeoEvent Processing steps to perform, - what input(s) to apply them to, - and what outputs(s) to send the results to.

13 Applying real-time analytics GeoEvent Processing You can perform continuous analytics on geoevents as they are received using a processor. GeoEvent Processor Inputs GeoEvent Services Outputs You can create your own processors. Out of the Box Field Enricher Field Reducer Field Calculator Geotagger Field Mapper Track Gap Detector Esri Gallery Track Idle Detector ETA Calculator Service Area Buffer Ellipse Range Fan SDK Slope Calculator Volume Control Incident Detector Visibility Query Report

14 Demo Demonstration Detecting GeoFence Violations

15 Sending Real-Time Data to the Map Ryan Elliott & James Cardona

16 Sending Real-time Events to Clients Patterns pull and push Pull via feature services - Must be backed by an enterprise geodatabase (EGDB) - Clients poll to get updates Push via Web Socket output - Low latency, high throughput - Clients subscribe to features of interest GeoEvent Processor ws:// Broadcast Features Subscribe (Push) Your Applications feature layers Polling (Pull) ArcGIS Server GeoEvent Services Update a Feature Add a Feature ArcGIS Server Map Services Feature Services EGDB Feature Layer Stream Layer

17 Demo Demonstration Publishing Events through Web Sockets

18 Quick Tour of the GeoEvent Processor REST Interface Ryan Elliott

19 Administering GeoEvent Processor REST Admin API A complete set of REST administrative endpoints enable you to manage GeoEvent Processor programmatically: - Everything you can do in GeoEvent Processor Manager you can also do via REST since it exclusively uses the REST Admin API GeoEvent Processor Manager REST Admin API GeoEvent Processor GeoEvent Services JavaScript Inputs Outputs ArcGIS Server

20 Demo Exploring the REST api Ryan Elliott

21 Displaying Real-Time Web Socket data on a map with the Stream Layer James Cardona

22 Stream Layer What is it? A new type of layer in the Javascript API - Introduced in version 3.6 Draws data on map using client-side graphics esri/layers/graphicslayer esri/layers/featurelayer esri/layers/streamlayer Graphics Layer Feature Layer Stream Layer Graphic Geometry Attributes Symbol GET POST HTTP RESPONSE Web Socket PUSH Feature service GeoEvent Processor ArcGIS Server ArcGIS Server

23 Stream Layer Advantages More efficient transfer of data. - Only negotiate a connection once. - Messages sent without extra headers Avoids need to poll for data updates Stream Layer Feature Layer Request Response Establish Close Connection Data Feature service GeoEvent Processor ArcGIS Server ArcGIS Server

24 Stream Layer Lifecycle GeoEvent Processor StreamLayer Map ArcGIS Server Stream Layer (Constructor) new StreamLayer( featurecollection, options ) FeatureCollection: { layerdefinition: { geometrytype: esrigeometrypoint, timeinfo: { starttimefield: StartTime, trackidfield: Name }, fields: [ ] }, featureset: null } Options websocketurl: ws://gep:6180/urlpath purgeoptions: { displaycount: 500 }

25 Stream Layer Lifecycle GeoEvent Processor { geometry: { x:-77, y:42, spatialreference: { wkid:4326}, attributes: { name: Buffy }} Adds graphic to layer (Symbol generated using layer renderer) Emits graphic-add event ArcGIS Server Stream Layer (WebSocket.onmessage) Parses message to generate geometry and attributes Emits message event Checks if number of graphics is over threshold Removes oldest graphic if necessary Emits graphic-remove event if necessary

26 Stream Layer What is needed <meta http-equiv="x-ua-compatible" content="ie=10" /> GeoEvent Processor Output Connector - Feature JSON over Web Socket Browser that supports Web Sockets Web Socket protocol allowed on network ws://, wss://

27 Demo Demonstration Consuming Streams of Features with the Stream Layer

28 Road Ahead Stream Services Ryan Elliott & James Cardona

29 Stream Services The Future of Streaming Data Developer Productivity - Provides all the metadata needed by clients to find and consume a stream of features. Customizable - Individualized client connections provide filtering and projection. Scalable - Features published to a stream services are accessible from any machine in the cluster.

30 Stream Services The Future of Streaming Data GeoEvent Processor Stream Service ws:// Subscribe ArcGIS Server Subscription changes Stream Layer GeoEvent Processor Stream Service ws:// Subscribe ArcGIS Server Subscription changes Stream Layer

31 Demo Demonstration Stream Services

32 What We Covered Today Consumed Live data from Sensors and a Web Service Filtered and generated incidents from spatial behavior Pushed events to a web app through feature services and web sockets Used JavaScript API Stream Layer to receive messages pushed from server and display them on a map Saw a preview of the Stream Service that will allow developers to easily receive data through a web socket and set filters that are processed on the server

33 ArcGIS GeoEvent Processor Additional Workshops Use Cases for Applying Real-Time Analytics Using ArcGIS GeoEvent Processor Tuesday 4:00pm - 5:00pm Primrose B ArcGIS GeoEvent Processor An Introduction Wednesday 10:30am - 11:30am Primrose B Extending ArcGIS GeoEvent Processor with New Connectors Wednesday 1:00pm - 2:00pm Pasadena/Ventura/Siearra The Internet of Things (IoT) and ArcGIS GeoEvent Processor Wednesday 4:00pm - 5:00pm Primrose C/D Extending ArcGIS GeoEvent Processor with New Processors Wednesday 5:30pm - 6:30pm Primrose C/D Use Cases for Applying Real-Time Analytics Using ArcGIS GeoEvent Processor Thursday2:30pm - 3:30pm Primrose C/D

34 ArcGIS API for JavaScript Additional Workshops ArcGIS API for JavaScript: What Have You Done for Me Lately? Tuesday 5:30-6:30 Oasis 4 and Thursday 2:30 3:30 Catalina/Madera Transitioning to JavaScript: What to Expect and How to Quickly Come Up to Speed Tuesday 5:30 6:30 Primrose B Introduction to ArcGIS API for JavaScript Wednesday 2:30 3:30 Primrose B Tips and Tricks for Debugging Apps Built with ArcGIS API for JavaScript Wednesday 4:00 5:00 Catalina/Madera and Thursday 2:30 3:30 Primrose A Dojo: The Good Parts Thursday 10:00 11:00 Smoketree F and Thursday 2:30 3:30 Smoketree F Introduction to the ArcGIS WebApp Builder: JavaScript Apps Made Easy Thursday 1:00 2:00 Primrose B

35 Additional resources for GeoEvent Processor Resource Center Forum

36 Additional resources ArcGIS API for JavaScript Resource Center Code Samples GeoEvent Processor Tutorial for Web Sockets (Coming soon) In the GeoEvent Processor Gallery

37 Questions / Feedback? To learn more: Ryan Elliott Software Engineer ArcGIS GeoEvent Processor for Server relliott@esri.com James Cardona Web Developer DC Development Center jcardona@esri.com

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