Sensors and Clouds Prof. Massimo Villarimvillari@unime.it

Università degli Studi di MessinaCloud Summer School

Almere, July 22-26 th, 2013

Eng. Giuseppe Tricomigtricomi@unime.it

Agenda:• First Day:

▫System Setup (CleverUniMeSens)▫Configurations for External DB LAMP based(sensordb)▫Data Production (SensoracquisitionGenerator)▫Data Acquisition (CleverUniMeSens)

• Second Day :▫Sensor Web Enablement (SWE): SOS/SAS▫Real-Time Data Retrieval with a Multi User Chat XMPP

(MUC)▫On-Demand Data Retrieval with

CleverAdministratorSHELL• Third Day:

▫Clever as a Federated VIM▫Demo with OpenStack and Clever

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Introduction Widespread availability of cheap sensing devices On-board components built into a wide range of systems (e.g.,

smartphones, indash units, body sensor networks...) Advances in pervasive computing techniques

Many application scenarios: healthcare, smart city, domotic, traffic assistant, ... Many concepts, standards and projects:

Internet of Things (IoT) OGC Sensor Web Enablement (SWE),W3C Semantic Sensor Networks (SSN),... 

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Cloud computing

Data provisioning systems:

• for capturing information from the physical world

• interacting with heterogeneous devices and observation environments

• characterized by high processing capabilities

• able to store and manage huge amount of data

Cloud computing might be the GLUE for aggregating heterogeneous systems

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Cloud-based Data Provisioning Service•Subscribing step

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CleverUnimeSens components

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Service Design

• Data provisioning service compliant with the Sensor Web Enablement (SWE) standard defined by the Open Geospatial Consortium.▫ XML-based languages▫ W3C Semantic Sensor Networks: a new ontology to describe sensors

and observations is based on the semantic annotation of OGC-SWE

• Data accessed through a XMPP Multi-User Chat (MUC)▫ decentralized service, high degree of scalability, high number

of hosts involved, flexibility in the system, interoperability and native security features based on TLS/SSL

• Message oriented middleware for Cloud▫ XML-based document

• XML-based data storage (SEDNA)

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Virtual Pervasive Element

C-SENSORReader

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Virtual Pervasive Element

C-SENSORReader

DB Name:sensorml

DB Name:sensordb

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XMPP COMMUNICATION

SERVERXMPP ACCESS

SERVERXMPP ACCESS

(see Log)

ADMINISTRATION CLIENT

CLUSTER MANAGER

HOST MANAGERS

SEVER XMPP

SERVERXMPP ACCESS

(see Log)

CHECK PRESENCE OF  CLUSTER MANAGER

(see Log)

CLUSTER MANAGERELECTION(see Log)

@author: Giuseppe Tricomi

SHELL-test@conference.localhos

ttest@

conference.localhost

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CLEVER MUCsSHELL-test@

conference.localhost test@

conference.localhost

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TKabber

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Basic Commands (under Ubuntu/Debian)

•SEDNA DB:▫ To start:

sudo /opt/sedna/bin/se_gov▫To create the Clever DB:

sudo /opt/sedna/bin/se_cdb cleverDatabase▫ To execute the DB:

sudo /opt/sedna/bin/se_sm cleverDatabase ▫To remove the DB

sudo /opt/sedna/bin/se_ddb cleverDatabase▫To stop:

sudo /opt/sedna/bin/se_stop

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All in one VM: user=test pw=testpass• XMPP Server (Ejabberd)• Client XMPP (tkabber)• XML-DB (SEDNA)• CleverUnimeSens:

▫ CleverCloud▫ CleverAdministration

• LAMP (PhpMyAdmin), ▫ MySQL DB:

Virtual Sensor DB SensorML DB (basis for CleverSens compliant

SAS/SOS)• SensoracquisitionGenerator

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Basic Commands (under Ubuntu/Debian)

•The CleverCloud path is:▫/home/test/CleverUnimeSens/trunk/

clevercloud▫To start Clever:

(in clevercloud folder) java –jar dist/clever.jar •The CleverAdministration path is:

▫/home/test/CleverUnimeSens/trunk/cleverAdministration

▫To start CleverAdminitration: (in cleverAdministration folder) java –jar

dist/cleveradministration.jar

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Inside clevercloud folder

1-configuration_clustercoordinator.xml2-configuration_initiator.xml3-configuration_Readers.xml4-configuration_sasagent.xml5-configuration_sosagent.xml

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1-configuration_clustercoordinator.xml

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2-configuration_initiator.xml

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3-configuration_Readers.xml

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DB Name:sensordb

5-configuration_sosagent.xml

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DB Name:sensorml

Inside cleverAdministration folder

1-config_clever_cli.xml

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1-config_clever_cli.xml

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ScreenShot DB (sensorml)

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ScreenShot DB (sensorml)24

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ScreenShot DB (sensordb)

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ScreenShot DB (sensordb)

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SEDNA DB Client•Sudo java -jar /home/test/sednaadmin-bin-

0.1.5/sednaadmin-bin/SednaAdmin.jar

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SEDNA DB Client

•for $r in document("cleverData")/clever/cluster/hm/agent/SASPubblicationHistoryreturn $r

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ScreenShot DB(SEDNA)29

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Homeworks•Experiment with CleverUniMESens VM•Try to remove the Virtual DB (sensordb)

and reinstall it (sensordb.sql)•Fill the sensordb using

SensoracquisitionGenerator (see the next slide)

•See if sensorml DB is filled•See if SEDNA DB is filled

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Homeworks:SensoracquisitionGenerator

•Configure it:▫SensoracquisitionGenerator/cfg/

Configuration.xml•Run it:

▫cd SensoracquisitionGenerator/▫Java –jar dist/SensoracquisitionGenerator.jar

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