While there are many ways to build integrations with salesforce, one of the fastest growing ways is through the Salesforce REST API. Join us as we explore the current REST-ful mechanisms available to the AppCloud, and see what the next year has to offer. In this session we will discuss the Salesforce REST API structure, Authenticating to the REST API, sObject Manipulation, and Composition through the REST API.
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3. Many customers are facing a set of challenges around
building client applications against the Salesforce REST
API.
Raise your hand if you:
• Have used the REST API in Salesforce
• Have tried to build a client application using the REST API but have
faced issues with the number of round trips
• Have a need to design efficient APIs and want to reduce the number of
API round trips to the Salesforce server
Building Streamlined APIs
4. Bulk
REST
Metadata
SOAP
Tooling
Streaming
INTEGRATIONLAYER
Point & Click
Integration Tools
Page
Builder
DECLARATIVE DEVELOPMENT
GLOBAL ENTERPRISE CLOUD INFRASTRUCTURE
PLATFORM SERVICES
APP MANAGEMENT & DEPLOYMENT
Workflow
Engine
UI FrameworkSharing &
Permissions
Global
Search
Reports &
Dashboards
Files
& Content
Authentication CollaborationEvent Log
Framework
Translation
Workbench
App
Builder
Process
Builder
Schema
Builder
Multi-Tenant Network
& Firewall
Auto
Updates
Backup &
Geodiversity
Security Trust
IDECLI Agile
Accelerator
Store
Builder
Dev
Console
Sandbox
Metadata
Heroku DX node.js
PROGRAMMATIC DEVELOPMENT
Database Smart
Containers
Heroku
Add-ons
Heroku
Button
Ruby
Identity
Global
Data Centers
Data
Storage
Single code
base
Python Java APEXPHP
Offline
Salesforce1 Mobile
Container Geolocation
Push
NotificationsSDK Mobile Identity
MOBILE SERVICES
Community
Builder
Page
Builder
App Cloud Gives You Tools for Building Any App
Full spectrum of capabilities from enterprise control to elastic flexibility
5. REST API
• Best suited for browser or mobile applications which do not
need to access high amounts of records
• Access data over REST
• XML or JSON
• Synchronous
• Authenticate with OAuth 2.0 (connected app)
https://www.salesforce.com/us/developer/docs/api_rest/
6. Anatomy of a REST API Call
https://na44.salesforce.com/services/data/v37.0/sobjects/Account/0010000000ABc12
Instance of Saleforce
API Type
API Version
API Subtype
Entity
Record ID
9. What is a Composite API?
• An API that is built by combining existing API functions
• A single request to an API can perform multiple functions
• Orchestration of the composite APIs allow developer
controlled business logic and functionality
• Responses from one API method can be directed as inputs into another method
• Multiple APIs can be used in a single call to improve performance
• Compositions are key for designing efficient API for use in
mobile development
11. Batching REST Resource
• Resource which accepts multiple REST calls to execute
• A single Batch REST request can execute up to 25 sub-requests
• Sub-requests contains the resource (URI) and the method to execute
• Each sub-request is an unrelated API call
• Sub-requests are executed serially, in order, and as the running user
• As each sub-request completes, the call is committed
• Has one optional parameter
• haltOnError - indicates if the batch should stop on any error that is encountered
• The response will be a JSON object of responses from the
sub requests
15. Example Unsuccessful Batch Response
{"hasErrors" : true,
"results" : [{
"result" : [{"message" : "Required fields are missing: [Name]”,"errorCode" :
"REQUIRED_FIELD_MISSING",
"fields" : [ "Name" ]}],
"statusCode" : 400
},{
"result”:[{"message”:"Cannot access this resource in a batch request”,
"errorCode”: "INVALID_BATCH_REQUEST”}],
"statusCode" : 400
},{
"result" : [{
"message" : "nselect ids, name, industry from accountn^nERROR at Row:
1:Column:8nNo such column 'ids' on entity 'Account'. If you are
attempting to use a custom field, be sure to append the
'__c' after the custom field name. Please reference your WSDL or
the describe call for the appropriate names.”, "errorCode" :
"INVALID_FIELD"}],
"statusCode" : 400
}]}
17. TreeSave REST Resource
• Creates SObject trees with the same top level object type
• A recursive data structure that contains a root record, its data, and its child
records represented as other sObject trees
• The REST resource manages all of the ID creations and mapping
• Create an Account, Contact, Opportunity, and Note in a single call
• The request can contain the following:
• Up to a total of 200 records across all trees
• Up to five records of different types
• SObject trees up to five levels deep
• You can create 200 top level records, by only providing the top level
19. Using the TreeSave REST Resource
• The dev provides the record relations via a reference ID
• ReferenceId is used to link related records and to return errors
• Only Insert is supported
• Triggers, processes, and workflow rules fire separately for each of the
object levels
• EX – All triggers fire for all the top level records, then all fire for the second level
records, then third, etc…
• All records are rolled back on any error
• Error will indicate which referenceId had the error so that the developer can take
the appropriate action
24. Current Composite APIs on Salesforce
• There are a number of existing Composite resources
• The Batching REST resource allows for the sending of multiple REST calls in a
single round trip
• The calls are unrelated, simply reduces round trips
• The TreeSave REST resource allows creation of multiple records in a single call
• Limited to insert and all-or-none saves
• Apex REST can be used to build custom logic
• Requires complete design by the developer
25. Building a Composite API on Salesforce
• A new API which will be a combination of Batch and
TreeSave
• Outputs from one API call can be Inputs into another using the developer
assigned referenceId
• Ex - @Account1.id can be used in a later query, as a reference field, or in an action
• Friendly URLs will assist in navigating the resource hierarchy
• Ability to crawl the resource tree easily
• Ex - /services/data/v36.0/sobjects/Account/001X00000000123/Contacts will give you a list
of all Contacts on a the designated Account
• This will allow multiple CRUD operations to collections
• This will allow a simple layer of orchestration to the REST API
26. Composite REST API Diagram
/services/data/v37.0/sobjects/Account
/services/data/v37.0/sobjects/Account
/services/data/v37.0/sobjects/Contact
/services/data/v37.0/sobjects/Contact
/services/data/v37.0/sobjects/Case
/services/data/v37.0/sobjects/Case
/services/data/v37.0/sobjects/Task
/services/data/v37.0/sobjects/Task
/services/data/v37.0/query/?q=select id
from account limit 4
/services/data/v37.0/sobjects/Case/describ
e
/services/data/v37.0/tree/Account
Query
Describe
30. What did we Learn?
• What is the Salesforce REST API
• Existing Features that begin to support
composite actions
• Batching API
• TreeSave API
• Composite API
• Demos of existing resources