Wednesday, 29 March 2017

Tuesday, 28 March 2017

Salesforce: Can't refresh access token. Response: {"error":"invalid_grant","error_description":"token validity expired"}

Sometimes we may not be able to refresh the Salesforce access_token using the rest api and get below error in logs

28.03.2017 23:41:40.184 *ERROR* [0:0:0:0:0:0:0:1 [1490724696957] GET /content/training/en/salesforce/jcr:content/par/salesforcesearch.html HTTP/1.1] com.adobe.cq.mcm.salesforce.SalesforceClient Can't refresh access token. Response: {"error":"invalid_grant","error_description":"token validity expired"}

Root cause:
This issue is due to the "Refresh Token Policy" settings of the connected app is set to "Immediately expire refresh token"

Follow the below steps to resolve this issue:

  • Goto setup -> Connected apps ->Manage Policies
  • Select Refresh Token Policy as Refresh token is valid until revoked

Saturday, 25 March 2017

Access OSGI ser­vice from the WCMUse-class in Sightly

OSGI service are very helpful once its comes to the development of a module. A Service can be used to perform small task like string operations to big like processing shopping cart. For developers who are shifting to Sightly for better development practices and taking advantage of AEM 6.x features, it might be a troublesome that how a OSGI Service can be accessed in Sightly module.
Zoom out a bit and you will be able to see things more clear. Here’s all that needs to be done,
  1. You have to create a OSGI service as usual by creating a interface and implementing it.
  2. Create a class extending WCMUse and get the instance of your OSGI service. 
  3. Class created in step #2, use this in Sightly component to get the values / output

Friday, 24 March 2017

Integrate Adobe AEM with Salesforce

Integrate Adobe AEM with Salesforce

Adobe AEM provide its extendable capabilities to integrate  with other products. Below demonstration describe how to connect Adobe AEM with Salesforce which is the market’s leading cloud based CRM System. AEM provide OOTB components for the integration purpose. It helps the organization to target the customers through web channels as per their status in CRM.

Steps to Connect to Salesforce:
AEM uses OAuth mechanism to connect to Salesforce. So , first we need to create an connected app inside salesforce to get customer secret and access token.

Go to Click on Setup on the top right corner. Search for Apps and create a custom app. Fill in required details as shown in below images. Callback Url here accept only https urls, so our AEM must be SSL configured. Check here how to configure SSL in AEM. Callback url is the url of cloud service that we will create in AEM.

Create new custom app

Monday, 20 March 2017

Enable SSL for AEM author instance

Accessing site over https is must. AEM has capability to access entire site or few pages https.

There are two ways to access site or pages by https:
  • Using OSGI service Apache Felix Jetty Based Http service. (To access entire instance using https).
  • Using crxde, manually creating nodes. (To access few pages using https).

Create credential for SSL development

Use the Java keytool to create a self-signed credential and to store it in a keystore file. The following procedure uses a single command that includes all of the information needed to create the keystore. For complete information about the command, see the Oracle Java SE Documentation.

  1. Create a directory named ssl in the directory where the quickstart JAR file is located.
  2. In the command prompt, type the following command to create the credential and keystore:
keytool -genkeypair -keyalg RSA -validity 3650 -alias cqse
 -keystore [quickstart_dir]/ssl/keystorename.keystore  -keypass key_password 
-storepass  storepassword -dname "CN=Host Name, OU=Group Name, 
O=Company Name,L=City Name, S=State, C=Country_ Code"

Saturday, 18 March 2017

Scaffolding in AEM

Scaffolding is a functionality to create structure-wise similar content based on a - well - old-fashioned form-based input screen. Boring, you might say, and definitely nothing any editor used to drag'n'drop fun would like to use. Especially, since swapping back and forth to scaffolding mode from the sidekick doesn't work properly if the content structure changed by e.g. adding new components or removing / re-adding the text-image. Still, if there's some casual user who just once in a while has to type in some news entry or blog post, that scaffold might work - sort of. But the scaffold is not much to talk about. Let's reconsider this.
 What is scaffolding actually? Basically, it's form based editing of existing or new pages. The form is defined as a static dialog within the CMS. You can have a look at the example and the dialog definition in your CQ5.5 instance (links require running it on localhost:4502).
This scenario can be used not only for quickly creating structured content (and works quite well for that use case), but I also used the functionality of the scaffold to provide advanced functionality: