OpenSplice DDS Angelo CORSARO, Ph.D. Chief Technology Officer OMG DDS Sig Co-Chair PrismTech [email protected] DDS Everywhere OpenSplice
DDS Everywhere
May 10, 2015
An increasing number of applications, such as smart cities, mobile-health and smart grids, require to ubiquitously distribute and access real-time information from, and across, a vast variety of devices, ranging from embedded sensors to mobile devices. While the problem of ubiquity is solved at a computing and network connectivity level, it is by no means solved with respect to (1) real-time, and (2) resource efficient (e.g. battery life and network), data distribution.
This webcast will unveil PrismTech’s “DDS Everywhere” product strategy and will introduces a series of Innovations that have extended the OpenSplice ecosystem to seamlessly share data between embedded devices, traditional IT infrastructures, cloud applications and mobile devices.
This webcast will unveil PrismTech’s “DDS Everywhere” product strategy and will introduces a series of Innovations that have extended the OpenSplice ecosystem to seamlessly share data between embedded devices, traditional IT infrastructures, cloud applications and mobile devices.
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OpenSplice
DDS
Angelo CORSARO, Ph.D.Chief Technology Officer OMG DDS Sig Co-Chair
DDS EverywhereOpenSplice
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OpenSplice
DDS
DDS Everywhere Platform☐ A DDS-based, interoperable
product family addressing systems needs from Embedded and Mobile to Enterprise and Cloud
☐ An Open Source core providing free access to the OpenSplice Ecosystem, security of supply and a vibrant, innovative community
OpenSpliceCommunity
OpenSpliceCloud
OpenSpliceEmbedded
OpenSplice
OpenSpliceEnterprise
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OpenSplice
DDS
DDS Everywhere Platform
☐ RTOS (VxWorks, QNX, etc.)
☐ FPGA☐ BSP / No-OS☐ IP + Exotic
Transports
Industrial Platforms
☐ OS (Linux, Windows, etc)
☐ Cloud☐ DBMS☐ No-SQL☐ InfiniBand + IP
Transports
IT Platforms
☐ Browser / HTML5☐ iOS☐ Android☐ Cloud☐ No-SQL☐ Mobile/WiFi IP
Transp.
Consumer Platforms
OpenSpliceCommunity
OpenSpliceCloud
OpenSpliceEmbedded
OpenSplice
OpenSpliceEnterprise
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OpenSplice
DDS
DDS Everywhere Platform
☐ Determinism☐ Latency☐ Footprint
☐ Fault-Tolerance☐ Throughput☐ Scalability☐ Latency☐ Security☐ Integration
☐ Mobility☐ Elasticity☐ Cloud☐ Integration
OpenSpliceCommunity
OpenSpliceCloud
OpenSpliceEmbedded
OpenSplice
OpenSpliceEnterprise
OpenSplice
DDS
OpenSplice Enterprise
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OpenSplice
DDS
Key Highlights☐ The best middleware
infrastructure to Simplify Distributed System Development
☐ Reduce complexity of building, testing, integrating, and deploying high-performance, scalable, and fault-tolerant distributed systems OpenSplice
DDS
OpenSplice
Tools
OpenSpliceCommunity
OpenSpliceCloud
OpenSpliceEmbedded
OpenSplice
OpenSpliceEnterprise
OpenSplice
DDS
New in v6.3
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OpenSplice
DDS
OpenSplice DDSI2EEnhanced version of the Interoperable wire protocol DDSI v2.1
Discovery☐ Standardized discovery (locators)☐ Dynamic unicast/multicast selection☐ Optional static discovery
Real-Time☐ independently scheduled priority-lanes ☐ Support for Logical and Physical Partitioning ☐ Traffic-Shaping
Security
☐ Encrypted network-Partitions
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OpenSplice
DDS
Record and Replay☐ Dynamic recording of any topic-
data in a DDS system
☐ Selective replay with variable speed
☐ Distributed control by topic-based API (‘command’ & ‘status’ topics)
☐ Seamless integration with OpenSplice Tester (topic-based API)
☐ Dedicated RnR-Manager graphical GUI for scenario-definition and data import/analysis
RnRService
OpenSplice DDS
RnRService(s)
Any topic Record/Replay command & status topics
RnRManager
Record/Replay command & status topics
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OpenSplice
DDS
Record and Replay Tool
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OpenSplice
DDS
New DDS APIs
☐ The original DDS API introduces some unnecessary accidental complexity
☐ We’ve been working hard to standardize new C++/Java API for DDS that makes using it as simple as possible
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OpenSplice
DDS
Statistics
☐ The new API reduces the number of lines of code from 3x to 5x when compared to the original DDS API!
☐ Less code means less bugs
0
4
8
11
15
SLOC
DDS v1.2 C++ API ISO C++ API
Simple DataWriter with default QoS
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OpenSplice
DDS
ISO C++ DDS API
☐ Simple, Compact and Elegant
☐ Type-safe
☐ Orthogonal
☐ Efficient
☐ QoS DSL
struct ShapeType { string color; long x; long y; long shapesize;};#pragma keylist ShapeType color
int main(int argc, char* argv[]) { try { // Create DomainParticipant! ! DomainParticipant dp = DomainParticipant(0); // Create Topic! ! Topic<ShapeType> topic(dp, "Circle"); // Create Publisher! ! Publisher pub(dp); // Create DataWriter QoS DataWriterQos dwqos = pub.default_datawriter_qos() << Durability::Transient() << History::KeepLast(10); // Create DataWriter! ! DataWriter<ShapeType> dw(pub, topic, dwqos); // Write ShapeType s = {"RED", 50, 70, 90}; dw << s; // - or - dw.write(s); ! ! ! } catch (const dds::core::Exception& e) {! ! std::cout << e.what() << std::endl;! }! return 0;}
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OpenSplice
DDS
ISO C++ DDS API
☐ Unified and composable data selection API
std::vector<std::string> p;p.push_back("100");p.push_back("200");Query q("x < %0 AND y < %1", p);
auto data = reader ! .select() .instance(handle) // -- Select Instance ! ! .state(status::DataState::new_data()) // -- Filter on State ! ! .content(q) // -- Filter on Content .read(); // -- Execute the selection and read the data
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Example: DataWriterint main(int argc, char* argv[]) {try {! ! DomainParticipant dp(0);! ! Topic<ShapeType> topic(dp, "Circle");! ! Publisher pub(dp); ! ! DataWriter<ShapeType> dw(pub, topic); ! ! uint32_t pos = 0;! ! const uint32_t N = 300;! ! for (int i = 0; i < N; ++i) {! ! ! ShapeType bc = {"RED", i, i, 60};! ! ! ShapeType rc = {"BLUE", N-i, N-i, 60};! ! ! dw << rc;! ! ! usleep(10000);! ! }
! } catch (const dds::core::Exception& e) {! ! std::cout << e.what() << std::endl;! }! return 0;}
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Example: DataReaderint main(int argc, char* argv[]) { try { DomainParticipant dp(0); Topic<ShapeType> topic(dp, "Circle"); Subscriber sub(dp); DataReader<ShapeType> dr(sub, topic); uint32_t pos = 0; const uint32_t N = 300; uint32_t max_size = 10; const uint32_t sleepTime = 500000; while (true) { LoanedSamples<ShapeType> samples =
dr.read(); std::cout << "-----------" << std::endl; for_each(samples.begin(), samples.end(), printShapeSample); usleep(sleepTime); } } catch (const dds::core::Exception& e) { std::cout << e.what() << std::endl; } return 0;}
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OpenSplice
DDS
Full C++ Shapes Application
github.com/kydos/dds-psm-cxx/tree/master/examples/ishapes-driver
see:
OpenSplice
DDS
OpenSplice Cloud
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OpenSplice
DDS
Key Highlights
☐ Brings DDS on mobile devices powered by Android/iOS
☐ Enables DDS-based Cloud Messaging for higher scalability, throughout and minimal cost per message
OpenSpliceCommunity
OpenSpliceCloud
OpenSpliceEmbedded
OpenSplice
OpenSpliceEnterprise
OpenSpliceMobile
OpenSpliceGateway
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OpenSplice
DDS
OpenSplice Mobile
☐ Pure Java version of OpenSplice targeting the JVM
☐ DDSI Protocol Stack optimized for mobility and Android OS
☐ Only DDS on the market designed and Engineered for Android and the JVM
DCPS Java 5 / Scala API
DDSI (Optimized for Mobility)
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OpenSplice
DDS
OpenSplice Mobile
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OpenSplice
DDS
Demo
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OpenSplice
DDS
Java 5 PSM
☐ Idiomatic and ergonomic DDS API for Java
☐ Guaranteed code portability through clean separation of standard API (in an OMG provided JAR) and vendor implementation
☐ QoS and Selector DSL simplify programming and make code more readable
☐ QoS Provider allows to “externalize” the QoS configuration
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OpenSplice
DDS
Java Shapes -- Readerpackage org.omg.demo.dds.shapes;
import ...;
/** * This class provides a simple example of a DDS data reader using the new Java API. */public class ShapesReader { public static void main(String args[]) throws Exception {
if (args.length < 1) { System.out.println("USAGE:\n\tShapesWriter <topic>"); System.out.println("\n\ttopic = [Circle, Square, Triangle]"); System.exit(1); }
final String shape = args[1].substring(0,1).toUpperCase() + args[1].substring(1,args[1].length()).toLowerCase();
final ServiceEnvironment env = ServiceEnvironment.createInstance(ShapesWriter.class.getClassLoader());
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OpenSplice
DDS
Java Shapes -- Reader DomainParticipantFactory factory = DomainParticipantFactory.getInstance(env); DomainParticipant dp = factory.createParticipant();
final PolicyFactory pf = env.getSPI().getPolicyFactory(); TopicQos tqos = dp.getDefaultTopicQos();
tqos.withPolicies(pf.Durability().withTransient(), pf.Reliability().withReliable()); Topic<ShapeType> topic = dp.createTopic(shape, ShapeType.class);
Subscriber sub = dp.createSubscriber(); DataReaderQos drqos = sub.getDefaultDataReaderQos().withPolicies( pf.Reliability().withBestEffort(), pf.Durability().withTransient() );
DataReader<ShapeType> dr = sub.createDataReader(topic, drqos, new ShapeTypeListener(), Status.allStatuses(env));
Thread.currentThread().join(); }}
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OpenSplice
DDS
Java Shapes -- Writerpublic class ShapesWriter { public static void main(String args[]) throws Exception {
if (args.length < 4) { System.out.println("USAGE:\n\tShapesWriter <topic> <circle> <samples> <period ms>"); System.out.println("\n\ttopic = [Circle, Square, Triangle]"); System.out.println("\tcolor = [Red, Blue, Green, Magenta, Cyan]"); System.exit(1); }
final String shape = args[1].substring(0,1).toUpperCase() + args[1].substring(1,args[1].length()).toLowerCase(); final String color = args[1].toUpperCase();
final int samples = Integer.parseInt(args[2]);
final int period = Integer.parseInt(args[3]);
final int bound = 100;
final ServiceEnvironment env = ServiceEnvironment.createInstance(ShapesWriter.class.getClassLoader());
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OpenSplice
DDS
Java Shapes -- Writer final PolicyFactory pf = env.getSPI().getPolicyFactory(); DomainParticipantFactory factory = DomainParticipantFactory.getInstance(env);
DomainParticipant dp = factory.createParticipant(); Topic<ShapeType> topic = dp.createTopic(shape, ShapeType.class);
Publisher pub =dp.createPublisher(); DataWriterQos dwqos = pub.getDefaultDataWriterQos().withPolicies( pf.Reliability().withBestEffort(), pf.Durability().withTransient());
DataWriter<ShapeType> dw = pub.createDataWriter(topic);
final ShapeType sample = new ShapeType(color, 0, 0, 0); for (int i = 0; i < samples; ++i) { sample .setX(((int)Math.random()%bound)) .setY(((int)Math.random()%bound)) .setShapesize(((int)Math.random()%bound)); dw.write(sample); Thread.sleep(period); } }}
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OpenSplice
DDS
Performance
☐ OpenSplice Mobile v1.0 beta features already very good performance
☐ Latency is low and pretty stable ~3usec of difference from 32 to 1024 bytes
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OpenSplice
DDS
OpenSplice Gateway☐ Integration technology providing
connectivity from DDS to over 80 technologies, including WebSockets and REST
☐ Java-based and easily deployable on the cloud
☐ Key building block for OpenSplice Based Cloud Messaging Solutions
Supported Connectors Include:- JMS- REST- CometD- CFX-WebSockets- TCP, UDP Sockets
- HTTP- AMQP- XMPP- Hibernate-HBase- Custom
OpenSplice
Gateway
DDSI-RTPS
Custom
REST
JMS
XMPP
AMQP
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1 // Define endpoints 2 val inEndpoint = 3 "ddsi:"+ inTopic +":"+ inDomain +"/" + shapeType 4 val outEndpoint = 5 "websocket://"+inTopic.toLowerCase + "?sendToAll=true" 6 7 // Define a Route using the Scala DSL 8 val shapesRoute = new RouteBuilder { 9 override def configure() =10 from(inEndpoint) unmarshal("cdr") marshal() json() to(outEndpoint)11 }
WebSocket Integration
DDSDomain 0
Topic“Circle”
To JSON
☐ This example requires Camel 2.10
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nSpl
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DD
S
☐ Integrate different DDS Domains via TCP (or UDP) tunnel☐ Per Topic bridging☐ Unidirectional or bidirectional☐ Possibly adding SSL/TLS
DDSDomain 0
DDSDomain 0
Topic“Circle”
Topic“Circle”
GW 1
TCP
GW 2
TCP/UDP Tunneling
1 // on GW1:2 from("ddsi:Circle:0/ShapeType")3 to("netty:tcp://localhost:6789?sync=false");
1 // on GW2:2 from("netty:tcp://localhost:6789?sync=false")3 to("ddsi:Circle:0/ShapeType");
OpenSplice
DDS
OpenSplice Embedded
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OpenSplice
DDS
Key Highlights
☐ The OpenSplice Embedded Product family brings DDS connectivity to devices and resource constrained real-time embedded systems
OpenSpliceIntegrator
OpenSplice
Lite
OpenSplice
RTE
OpenSpliceCommunity
OpenSpliceCloud
OpenSpliceEmbedded
OpenSplice
OpenSpliceEnterprise
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OpenSplice
DDS
FPGA Integrator
☐ ‘Out-of-the-box’ solution for integrating FPGA’s withDDS based systems ☐ Bridges the device-data (via GIOP) to the DDS-based system using a software
‘gateway’ providing full DDS QoS support to maintain & distribute the device-data☐ Bridge-technology is be based either:
☐ OpenSplice Gateway (if a Java platform is available) or☐ A small OpenSplice bridge application or pluggable-service
FPGAICO
GIOPGIOP DDSI
GIOP/DDSIBridge
DDS
DDS Global Data Space
...
TopicA
TopicBTopicC
TopicD
Data Writer
Data Writer
Data Writer
Data Writer
Data Reader
Data Reader
Data Reader
Data Reader
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OpenSplice
DDS
OpenSplice Lite☐ Bring software-based DDS
implementation to a range of resource constrained devices
☐ Allow for variability on functionalities, transport and support of underlying OS/BSP
☐ Provides very low footprint and very high performance
☐ Footprint as low as 100/200 KB
☐ Latency as low as 35-45 usec (on Gigabit network)
Native C API
DDSI / DDSI-E
OS Abstraction
Transport Abstraction
RTOS
GPPDSP
uController
ISO C++ API
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OpenSplice
DDS
OpenSplice RTE☐ Bring the full power of DDS to real-
time embedded systems
☐ Provides low footprint, superlative scalability and and high performance
☐ Footprint 2MB
☐ Latency 75/80 usec (on Gigabit network)
DCPS API (C/C++/RT-Java)
DDSI-E / RT-NET
OS Abstraction
RTOS
GPP
OpenSplice
DDS
Putting it all Together
OpenSplice
DDS
DDS Everywhere!OpenSpliceMobile
Embedded OS
OpenSpliceLite
Embedded JVM
OpenSpliceMobile
Enterprise OS
OpenSpliceEnterprise
OpenSpliceGatewayMQTT, AMQP,
JMS, REST,....
DDS
RTOS
OpenSpliceRTE
OpenSplice
DDS
Final Remarks
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OpenSplice
DDS
Concluding Remarks
☐ With the DDS Everywhere platform we are making DDS available on any device
☐ That means that:☐ You can get DDS data from your system to anywhere☐ You can exploit the power of DDS across devices and technologies☐ You have a single technology end-to-end that provides optimal efficiency,
scalability, performance and more importantly data-centricity!
OpenSplice
DDS
OpenSplice
DDS
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