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Orion Context Broker Exercises (Part 1)

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This document outlines exercises for learning how to use the Orion Context Broker. It includes exercises to: 1. Create, query, and update entities using standard operations. 2. Create, query, and update entities using convenience operations. 3. Browse entity types and subscribe to notifications. More advanced exercises cover pagination, geolocation queries, compound attributes, custom metadata, and querying/updating entities with compound attributes. Contact information is provided for questions.

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Orion Context Broker Exercises (PART I) Contact twitter @marivibriz Contact email mariavirtudes.brizruiz@telefonica.com
Outline CB-1. Create entities using standard ops CB-2. Query entities using standard ops CB-3. Update entity using standard ops CB-4. Create entities using conv ops CB-5. Query entities using conv ops CB-6. Update entity using conv ops CB-7. Browsing entity types CB-8. Basic subscription/notifications 2
CB-1. Create entities using standard ops Steps Create the following entities in your Orion instance See table in next slide Hints Orion User Manual section 3.3.1.1 (UpdateContext & APPEND) Easy
CB-1 . Create entities using standard ops Easy Entity Entity Type Bedroom1 Room Bedroom2 Room Kitchen Room Frontdoor Door Backdoor Door Entity Type Attr. Name Attr. Type Example value Room Temperature float 27.8 Presence boolean true Status string OK Door Locked boolean false Closed boolean false
CB-2. Query entities using standard ops Prerequisites Exercise CB-1 Steps Write a program (or web/mobile application) that does the following queries and prints the result Obtain all attributes of Bedroom1 entity Obtain only the Temperature attribute of Kitchen entity Obtain all attributes of Kitchen and Bedroom2 entities in one query Obtain all attributes of entities that match the pattern Bedroom.* Find out whether the doors are closed using the pattern .*door and the Closed attribute Run and test your program/application Hints Orion User Manual section 3.3.1.2 (queryContext) Easy
CB-3. Update entity using standard ops Prerequisites Exercise CB-2 Steps Write a program (or web/mobile application) that Asks for user input (one value) Updates Looked attribute of Frontdoor entity using that input Queries the entity and check the result Run and test your program/application Hints Orion User Manual section 3.3.1.2 and 3.3.1.3 (updateContext & UPDATE) Easy
CB-4. Create entities using conv ops Prerequisites Exercise CB-3 Steps Create the following entities in your Orion instance See table in next slide Hints Similar to exercise CB-2 in the standard ops set Orion User Manual section 3.3.2.1 (contextEntities/entityID) Easy
CB-4. Create entities using conv ops Easy Entity Entity Type Garage Room Bathroom Room Light1 Light Light2 Light Light3 Light Entity Type Attr. Name Attr. Type Example value Room Temperature float 27.8 Presence boolean true Status string OK Light Intensity Percent 0.25
CB-5. Query entities using conv ops Prerequisites Exercise CB-4 Steps Write a program (or web/mobile application) that does the following queries using convenience operations and print the result Obtain all attributes of the Garage entity Find out whether there is anyone in the Bathroom entity Obtain all entities created so far Obtain all entities of type Room Obtain the temperature attribute of all entities of type Room Run and test your program/application Hints Similar to exercise CB-2 in the standard ops set To get all entities of a given type, you can use the contextEntityType resource Orion User Manual section 3.3.2.2 (contextEntities/entityID and contextEntities/type/XX/id/XX) Easy
CB-6. Update entity using conv ops Prerequisites Exercise CB-5 Steps Write a program (or web/mobile application) that Asks for user input (one value) Updates Intensity attribute of Light1 entity using that input using a convenience operation Queries the entity and check the result Run and test your program/application Hints Similar to exercise CB-3 in the std ops set Orion User Manual section 3.3.2.2 and 3.3.2.3 (contextEntities/entityID and contextEntities/type/XX/id/XX) Easy
CB-7. Browsing entity types Prerequisites Exercise CB-6 Steps Write a program (or web/mobile application) that Lists all entity types Provides detailed information of type Door Run and test your program/application Hints Orion User Manual section 3.5.6 (contextTypes) Easy
CB-8. Basic subscription/notifications Prerequisites Exercise CB-7 Steps Write a program that Starts a REST server to receive notifications from Orion Prints the value of the Temperature attribute of Bedroom1 entity each time a notification is received Subscribe your program to changes in the Temperature attribute of Bedroom1 entity Update the Temperature attribute of Bedroom1 entity and check that your program prints the updated value Hints Orion User Manual section 3.3.1.4 (specially subsection on ONCHANGE, i.e. 3.3.1.4.2) Your program has to run in a VM to which your Orion instance may send notifications (e.g. the same VM in which Orion is running) Medium
Orion Context Broker Exercises (PART II) Contact twitter @marivibriz Contact email mariavirtudes.brizruiz@telefonica.com
Outline CB-1. Pagination CB-2. Geolocation (factory) CB-3. Compound attributes CB-4. Query entities with compound attributes CB-5. Update entities with compound attributes CB-6. Custom metadata 14
CB-1. Pagination Prerequisites Access to Orion instance running in workshop.tidnode.cl port 1026 Steps Check how many entities of type Sensor are stored in that Orion instance Write a program (or web/mobile application) that Asks for a limit and a page number Returns the name IDs the entities of type Sensor in the corresponding page Run and test your program/application Hints Orion User Manual section 3.5.1 (queryContext?limit=100&details=on) Medium
CB-2. Geolocation (factory) Prerequisites Access to Orion instance running in workshop.tidnode.cl port 1026 Steps Write a program (or web/mobile application) that Gets all existing types Gets all entities of each type in areas Red, Green and Blue (see next slide), printing entity IDs and their attributes which their values Run and test your program/application Hints Orion User Manual section 3.5.20 Medium
17 -33.596620, -70.666825 -33.607682, -70.670730 -33.6100089, -70.643231 -33.599194, -70.640200 CB-2. Geolocation (factory) Medium
18 -33.596620, -70.666825 -33.607682, -70.670730 -33.6100089, -70.643231 -33.599194, -70.640200 -33.603458, -70.652788 -33.606123, -70.653790 -33.604231, -70.646032 -33.607108, -70.646781 -33.602391, -70.661781 x 200m CB-2. Geolocation (factory) Medium
CB-3. Compound attributes Prerequisites Exercise CB-1 Steps Create the following entities in your Orion instance See table in next slide Hints Orion User Manual section 3.5.19 Medium
CB-3. Compound attributes Entity Type Attr. Name Attr. Type Example value Character Name string Fooy Hitpoints integer 110 Class string Barbarian Abilities compound { "STR": "2", "DEX": "4", "CON": "3", "INT": "1", "WIS": "1", "CHA": "2" } Inventory compound { "weapons": [ "sword", "dagger" ], "potions": { "life": "1", "mana": "0" }, "other": ["shield"] } Entity name Entity Type Gandalf Character Aragorn Character Frodo Character Medium
CB-4. Query entities with compound attributes Prerequisites Exercise CB-1 Steps Write a program (or web/mobile application) that does the following queries and print the result Obtain all attributes of Aragorn entity Obtain only the Abilities attribute of Frodo entity Run and test your program/application Hints Orion User Manual section 3.5.19 Medium
CB-5. Update entities with compound attributes Prerequisites Exercise CB-1 Steps Write a program (or web/mobile application) that Asks for an object name (e.g. staff, hat, etc.) Updates Gandalf's Inventory attribute to reflect that he now has a that object test your program Run and test your program/application Query the Gandalf's Inventory after that, in order to check that the object has been successfully added Hints Orion User Manual section 3.5.19 Medium
CB-6. Custom metadata Medium Prerequisites Exercise CB-1 Steps Update the Gandalf entity so that the inventory attribute has two new metadatas: name="Weight", type="float", value="1.2" name="MaxWeight", type="float", value="20" Query Gandalf again to see the new metadata atached to the corresponding attribute Hints Orion User Manual section 3.5.7
Thanks!Thanks! (Number to manuals sections in this presentation are valid at time of writing this March 9th 2015-, but they may change along time)

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Orion Context Broker Exercises (Part 1)

  • 1. Orion Context Broker Exercises (PART I) Contact twitter @marivibriz Contact email mariavirtudes.brizruiz@telefonica.com
  • 2. Outline CB-1. Create entities using standard ops CB-2. Query entities using standard ops CB-3. Update entity using standard ops CB-4. Create entities using conv ops CB-5. Query entities using conv ops CB-6. Update entity using conv ops CB-7. Browsing entity types CB-8. Basic subscription/notifications 2
  • 3. CB-1. Create entities using standard ops Steps Create the following entities in your Orion instance See table in next slide Hints Orion User Manual section 3.3.1.1 (UpdateContext & APPEND) Easy
  • 4. CB-1 . Create entities using standard ops Easy Entity Entity Type Bedroom1 Room Bedroom2 Room Kitchen Room Frontdoor Door Backdoor Door Entity Type Attr. Name Attr. Type Example value Room Temperature float 27.8 Presence boolean true Status string OK Door Locked boolean false Closed boolean false
  • 5. CB-2. Query entities using standard ops Prerequisites Exercise CB-1 Steps Write a program (or web/mobile application) that does the following queries and prints the result Obtain all attributes of Bedroom1 entity Obtain only the Temperature attribute of Kitchen entity Obtain all attributes of Kitchen and Bedroom2 entities in one query Obtain all attributes of entities that match the pattern Bedroom.* Find out whether the doors are closed using the pattern .*door and the Closed attribute Run and test your program/application Hints Orion User Manual section 3.3.1.2 (queryContext) Easy
  • 6. CB-3. Update entity using standard ops Prerequisites Exercise CB-2 Steps Write a program (or web/mobile application) that Asks for user input (one value) Updates Looked attribute of Frontdoor entity using that input Queries the entity and check the result Run and test your program/application Hints Orion User Manual section 3.3.1.2 and 3.3.1.3 (updateContext & UPDATE) Easy
  • 7. CB-4. Create entities using conv ops Prerequisites Exercise CB-3 Steps Create the following entities in your Orion instance See table in next slide Hints Similar to exercise CB-2 in the standard ops set Orion User Manual section 3.3.2.1 (contextEntities/entityID) Easy
  • 8. CB-4. Create entities using conv ops Easy Entity Entity Type Garage Room Bathroom Room Light1 Light Light2 Light Light3 Light Entity Type Attr. Name Attr. Type Example value Room Temperature float 27.8 Presence boolean true Status string OK Light Intensity Percent 0.25
  • 9. CB-5. Query entities using conv ops Prerequisites Exercise CB-4 Steps Write a program (or web/mobile application) that does the following queries using convenience operations and print the result Obtain all attributes of the Garage entity Find out whether there is anyone in the Bathroom entity Obtain all entities created so far Obtain all entities of type Room Obtain the temperature attribute of all entities of type Room Run and test your program/application Hints Similar to exercise CB-2 in the standard ops set To get all entities of a given type, you can use the contextEntityType resource Orion User Manual section 3.3.2.2 (contextEntities/entityID and contextEntities/type/XX/id/XX) Easy
  • 10. CB-6. Update entity using conv ops Prerequisites Exercise CB-5 Steps Write a program (or web/mobile application) that Asks for user input (one value) Updates Intensity attribute of Light1 entity using that input using a convenience operation Queries the entity and check the result Run and test your program/application Hints Similar to exercise CB-3 in the std ops set Orion User Manual section 3.3.2.2 and 3.3.2.3 (contextEntities/entityID and contextEntities/type/XX/id/XX) Easy
  • 11. CB-7. Browsing entity types Prerequisites Exercise CB-6 Steps Write a program (or web/mobile application) that Lists all entity types Provides detailed information of type Door Run and test your program/application Hints Orion User Manual section 3.5.6 (contextTypes) Easy
  • 12. CB-8. Basic subscription/notifications Prerequisites Exercise CB-7 Steps Write a program that Starts a REST server to receive notifications from Orion Prints the value of the Temperature attribute of Bedroom1 entity each time a notification is received Subscribe your program to changes in the Temperature attribute of Bedroom1 entity Update the Temperature attribute of Bedroom1 entity and check that your program prints the updated value Hints Orion User Manual section 3.3.1.4 (specially subsection on ONCHANGE, i.e. 3.3.1.4.2) Your program has to run in a VM to which your Orion instance may send notifications (e.g. the same VM in which Orion is running) Medium
  • 13. Orion Context Broker Exercises (PART II) Contact twitter @marivibriz Contact email mariavirtudes.brizruiz@telefonica.com
  • 14. Outline CB-1. Pagination CB-2. Geolocation (factory) CB-3. Compound attributes CB-4. Query entities with compound attributes CB-5. Update entities with compound attributes CB-6. Custom metadata 14
  • 15. CB-1. Pagination Prerequisites Access to Orion instance running in workshop.tidnode.cl port 1026 Steps Check how many entities of type Sensor are stored in that Orion instance Write a program (or web/mobile application) that Asks for a limit and a page number Returns the name IDs the entities of type Sensor in the corresponding page Run and test your program/application Hints Orion User Manual section 3.5.1 (queryContext?limit=100&details=on) Medium
  • 16. CB-2. Geolocation (factory) Prerequisites Access to Orion instance running in workshop.tidnode.cl port 1026 Steps Write a program (or web/mobile application) that Gets all existing types Gets all entities of each type in areas Red, Green and Blue (see next slide), printing entity IDs and their attributes which their values Run and test your program/application Hints Orion User Manual section 3.5.20 Medium
  • 17. 17 -33.596620, -70.666825 -33.607682, -70.670730 -33.6100089, -70.643231 -33.599194, -70.640200 CB-2. Geolocation (factory) Medium
  • 18. 18 -33.596620, -70.666825 -33.607682, -70.670730 -33.6100089, -70.643231 -33.599194, -70.640200 -33.603458, -70.652788 -33.606123, -70.653790 -33.604231, -70.646032 -33.607108, -70.646781 -33.602391, -70.661781 x 200m CB-2. Geolocation (factory) Medium
  • 19. CB-3. Compound attributes Prerequisites Exercise CB-1 Steps Create the following entities in your Orion instance See table in next slide Hints Orion User Manual section 3.5.19 Medium
  • 20. CB-3. Compound attributes Entity Type Attr. Name Attr. Type Example value Character Name string Fooy Hitpoints integer 110 Class string Barbarian Abilities compound { "STR": "2", "DEX": "4", "CON": "3", "INT": "1", "WIS": "1", "CHA": "2" } Inventory compound { "weapons": [ "sword", "dagger" ], "potions": { "life": "1", "mana": "0" }, "other": ["shield"] } Entity name Entity Type Gandalf Character Aragorn Character Frodo Character Medium
  • 21. CB-4. Query entities with compound attributes Prerequisites Exercise CB-1 Steps Write a program (or web/mobile application) that does the following queries and print the result Obtain all attributes of Aragorn entity Obtain only the Abilities attribute of Frodo entity Run and test your program/application Hints Orion User Manual section 3.5.19 Medium
  • 22. CB-5. Update entities with compound attributes Prerequisites Exercise CB-1 Steps Write a program (or web/mobile application) that Asks for an object name (e.g. staff, hat, etc.) Updates Gandalf's Inventory attribute to reflect that he now has a that object test your program Run and test your program/application Query the Gandalf's Inventory after that, in order to check that the object has been successfully added Hints Orion User Manual section 3.5.19 Medium
  • 23. CB-6. Custom metadata Medium Prerequisites Exercise CB-1 Steps Update the Gandalf entity so that the inventory attribute has two new metadatas: name="Weight", type="float", value="1.2" name="MaxWeight", type="float", value="20" Query Gandalf again to see the new metadata atached to the corresponding attribute Hints Orion User Manual section 3.5.7
  • 24. Thanks!Thanks! (Number to manuals sections in this presentation are valid at time of writing this March 9th 2015-, but they may change along time)