The document discusses web-enabled Data Distribution Service (DDS) technology developed by Real-Time Innovations, Inc., focusing on real-time data access via web-based applications. It details the architecture, scenarios for mobile and browser access, and provides an overview of the API for resource management. The document also includes information on data formats, application creation, and various supported operations through HTTP verbs.

1. DDS
DDS
Web
Enabled
Gerardo
Pardo-­‐Castellote,
Ph.D.
Chief
Technology
Officer,
RTI
October
2014

2. Web
IntegraHon
(OMG
Web-­‐Enabled
DDS)
Direct
access
to
real-­‐Hme
data
from
Web-­‐Based
ApplicaHons
Opera)onal
Data
Web
Web
Enabled
DDS
Integra)on
Service
Web
Enabled
DDS
GUARD
©
2014
Real-­‐Time
InnovaHons,
Inc.
Global
Data
Space

3. Web-­‐Enabled
DDS
as
Gateway
©
2014
Real-­‐Time
InnovaHons,
Inc.
HTTP
Protected
perimeter
and
network
Open
network
Firewall
DDS
Protocol
(RTPS)
NaHve
DDS
ApplicaHons
Client
ApplicaHon
using
the
OMG
standard
HTTP-­‐DDS
protocol
WebDDS
Service

4. ©
2014
Real-­‐Time
InnovaHons,
Inc.
Scenarios
• Mobile
data
access
• Access
to
DDS
from
browser-­‐based
applicaHons
• Web-­‐based
UIs/Dashboards
• Access
from
small
devices
• Access
across
firewall
• Disconnected
stateless
clients
– Short
lived
commands
– Scripts

5. WebDDS
Object
Model
©
2014
Real-­‐Time
InnovaHons,
Inc.
class WebDDS_ProxyClasses
«interface»
WebDDS::Entity
- name :string
«value»
WebDDS::Qos
WebDDS::Topic
«value»
WebDDS::Type
- name :string
WebDDS::
DataWriter
«value»
WebDDS::
QosProfile
- name :string
WebDDS::
Subscriber
WebDDS::
DataReader
WebDDS::
DomainParticipant
WebDDS::
Publisher
WebDDS::Status
WebDDS::WaitSet
WebDDS::Application
- name :string
- session_id :SessionId
«use»
0..* qos_profile qos

6. Object Type All URIs have the prefix “/dds/rest1”
Application /applications/<appname>
QosProfile /applications/<appname>/qos_profiles/<profile_name>
Type /applications/<appname>/types/<typename>
WaitSet /applications/<appname>/waitsets/<waitsetname>
Participant /applications/<appname>/participants/<partname>
RegisteredT
ype
©
2014
Real-­‐Time
InnovaHons,
Inc.
Resources
/applications/<appname>/participants/<partname>/
registered_types/<reg_type_name>
Topic /applications/<appname>/participants/<partname>/
topics/<topicname>
Publisher /applications/<appname>/participants/<partname>/
publishers/<pubname>
Subscriber /applications/<appname>/participants/<partname>/
subscribers/<subname>
DataWriter /applications/<appname>/participants/<partname>/
publishers/<pubname>/data_writers/<dwname>
DataReader /applications/<appname>/participants/<partname>/
subscribers/<subname>/data_readers/<drname>

7. WebDDS
API
access
to
resources
Type
of
REST
HTTP
verb
opera)on
Create
POST
Update
PUT
Read,
Get
GET
Delete
DELETE
All
others
POST
©
2014
Real-­‐Time
InnovaHons,
Inc.

8. ©
2014
Real-­‐Time
InnovaHons,
Inc.
Resou
rce
Representa)on
QoS
XML
-­‐>
same
as
DDS
QoS
profile
files
Types
XML
-­‐>
same
as
DDS
XML
ApplicaHon
CreaHon
-­‐>
Can
be
converted
to/from
IDL
-­‐>
DDS-­‐XTYPES
standard
Data
XML
-­‐>
DDS-­‐XTYPES
standard

9. ©
2014
Real-­‐Time
InnovaHons,
Inc.
Find
out
more…
www.rH.com
community.rH.com
demo.rH.com
www.youtube.com/realHmeinnovaHons
blogs.rH.com
www.twi_er.com/RealTimeInnov
www.facebook.com/RTIso`ware
dds.omg.org
www.omg.org
www.slideshare.net/GerardoPardo
www.slideshare.net/RealTimeInnovaHons