Saturday, 2 January 2021

All you need to know about Adobe Client Data Layer

What is Adobe Client Data Layer

A data layer in general consists of a JavaScript client side event driven data store that can be used on webpages, to collect data about what the visitors experience on the web page & to communicate this data to digital analytics and reporting servers(e.g. Adobe analytics or Adobe target)

What does it do?

The Adobe client data layer is a java script store for data and events happening on a page within the scope of a request. It reduce the effort to instrument websites by providing a standardized method to expose and access any kind of data for any script. 

It provides API to,

1) Register data that is to be merged into the data layer state
2) Trigger events that relate to the data stored in the data layer
3) Get the current data layer state of all merged data
4) Register listeners that are called for specific events or data changes

Steps to set up a data layer

1) Loading the data layer script
2) Declare the adobeDatalayer array

Once above steps has been configred, we can work on various push menthods(  Push the Data object/ Push Event Object/Push functions) Events (registering & unregistering)

The AEM Core Components are availed with Adobe Client Data Layer(Disabled by default - we need to enable it if we have plans to use it).

To push the data from website to Analytics, we need Adobe Client Data Layer extension & Adobe Analytics, Core Extensions to be configured.

Some of the use cases
1) Retrieving Analytics data & using it for Personalization
2) Trigger an update event on page when the stock market value changes

 Reference URLs:

 Adobe client data layer - https://github.com/adobe/adobe-client-data-layer

Wiki - https://github.com/adobe/adobe-client-data-layer/wiki

All you need to know about Project Firefly

 What is Project Firefly? 

Project Firefly is a run time framework for building 3rd party cloud native applications that extend the functionality of Adobe experience Platform(AEP) and Adobe experience cloud.

It provides everything we need to develop an application, even this is extendable - which grows with the needs.

What it contains?

  • Adobe I/O runtime - which is a server-less foundation for running 3rd party custom code on Adobe infra. It provides scaling in /out etc.
  • CLI & SDK - Enables local development, CI/CD. Streamlined way for developers to interact with core Adobe services and automated process.
  • Spectrum(Adobes design language) UI Framework - A React based UI framework for creating experiences that feels native comfort
  • Custom events - Publish and consume custom events with support for webhooks and journaling
  • Cloud services - a range of services for running managing and optimizing custom digital experiences.(Cloud storage, blob storage,CDN etc)
  • Set of Developer tools - Has UX modeling tools, IDE plugins(code completion) and other tools to aid in testing, debugging  and deploying custom experiences.


Whom it will be helpful?

  • System integration developers - who are typically specialized on integrating and extending Adobe enterprise solutions(AEM, Campaign, Marketo, Magento etc)
  • Enterprise developers - who works with enterprise customers to create business sue case demos etc.


What is the difference between I/O Runtime & project Firefly

Project Firefly is a complete app framework to build custom cloud native Adobe Apps, where in Adobe I/O runtime is a server-less platform for running custom code.

Project Firefly is built on top of Adobe I/O Runtime.

What are all the features of Project Firefly?

  • Storage services - We get all relevant storage services to work with a 3rd party app
  • Debugging - Provides various debugging options
  • Logging - Provides evident logging mechanisms
  • Action templates - Project starter templates
  • UI templates - React spectrum templates to help developers
  • Security - Firefly is highly secured


Some of the typical use cases of Firefly
1) Asset migration in AEM(External DAM to AEM) which are in Gigabytes(bulk uploads) - the task can be offloaded to a headless firefly app that uses content fragment API, so  that normal AEM tasks run without issues.

2) Offloading analytics data to Firefly - Firefly can pull the data from Adobe analytics and save it into DB or make it available for Target

3) Data ingestion monitoring - There are cases where we need to import Huge data into AEP and there could be errors in the process. We can use Firefly to monitor the Adobe i/O events and trigger the other system when something goes wrong to take corrective actions

4) Campaign stand dashboard for monitoring- unlike campaign classic, campaign standard doesnt provide a dashboard to monitor workflows. Using Firefly, we can create SPA that display the status of all workflows in Campaign standard - which helps marketers

Friday, 31 July 2020

Ugrading from older versions of AEM to AEM as a cloud Service - Tools


There are some readily available tools which fasten the process of upgrading older AEM to AEM as a Cloud Service.

Cloud Readiness Analyzer-CRA
  • Cloud Readiness Analyzer report is built using the output of the Adobe Experience Manager (AEM) Pattern Detector)
  • This gives high-level understanding of general upgrade readiness.
  • Helps accelerate the processes of assessing readiness to move from an existing Adobe Experience Manager (AEM) deployment to AEM as a Cloud Service.
  • This tool generates a report that identifies areas of potential refactoring, which is the first step in the transition journey to AEM as a Cloud Service.
  • CRA is supported on AEM instances with version 6.1 and above (CRA is supported on AEM instances with version 6.1 and above)
  • CRA can run on any environment, but it is preferred to have it run on a Stage (Author) environment or clone of the production Author environment
  • CRA can be downloaded as zip and uploaded to AEM instance via Package Manager

Notes: CRA utilizes a system service user account named repository-reader-service(default available in AEM 6.2 and later, For AEM 6.1 we will have to manually create it) to execute the Pattern Detector. Version 6.3 and later we can access CRA via tools -> Operations -> Cloud Readiness Analyzer.
AEM 6.2 prvides a link that generates and downloads the CSV report.
and 6.1 the tool is not functional and only the HTTP interface may be used
    

Analyzer report
-  includes the following categories:
  • Application functionality that must be refactored
  • Repository items that must be moved to a supported location
  • Legacy user interface dialogs and components that must be modernized
  • Deployment and configuration issues
  • AEM 6.x features that have been replaced by new functionality or that are currently not supported on AEM as a Cloud Service
  • The report generation time required is highly dependent on the size and nature of the AEM repository content, the AEM version, and other factors
-----------
Content Transfer Tool CTT

This tool helps to move existing content over from a source AEM instance (on-premise or AMS) to the target AEM Cloud Service instance.
We can use this tool to transfer principals (users or groups) automatically

2 Steps involved
Extraction- extract the source content from AEM and keeping a temporary place called 'migration set'(cloud storage area provided by Adobe - inactive for more than 30 days it gets deleted )

Ingestion - ingesting content from the migration set into the target Cloud Service instance

**Content Transfer Tool creates a local copy of the repository that is later uploaded to the migration set. So ensure enough space is available in local/source AEM

  • Minimum req for CTT is  AEM 6.3 + and JAVA 8. On lower env upgrade your content repository to AEM 6.5 first
  • author AEM will be unavailable during the whole ingestion process.
  • The recommended upper limit for the repository size is 20 Gb
  • CTT can be downloaded as zip and uploaded to AEM instance via Package Manager
  • Access it from  navigate to tools -> Operations -> Content Transfer

FAQ on AEM as a cloud service

1) Which are all the environments available as part of AEM as a cloud service?

Four types of environments available with AEM as a Cloud Service:
  • Production environment - for the business practitioners
  • Stage environment : performance and quality tests before changes to the application are pushed to the production
  • Development environment -  developers to implement AEM applications
  • Demonstration environment : Training , demos, pocs etc - is simplified to a single author node, all others having min 2 author nodes
2) Which are all the types of programs available as part of AEM as a cloud service?

Two types of programs are initially available for AEM as a Cloud Service:
  • AEM Cloud Sites Service
  • AEM Cloud Assets Service

3) What we get as part of AEM as a cloud license?

When we get the license we will have

  • Code repository (Git)  1
  • Baseline image (Sites or Assets)  1
  • Stage and production environment set (1:1) 0 or 1
  • Non-production environments (development or demonstration) 0 to N
  • Pipeline for each environment 0 or 1

**Note:* The author tier will contain all Sites and Assets functionality for all programs, but the Assets programs will not have a publish tier by default

4) What are all the changes in Author, Publish & Replication in AEM as a Cloud Service

Author and publish features:

Both author and publish tiers always accessed via a load balancer. But publish tier, a Continuous Delivery Network (CDN) is always available.

The method of author to publish replication has upgraded now. AEM as a Cloud Service Sling Content Distribution which  allows one to distribute Sling resources between different Sling instances.{The API works at path level and the distribution agents basically enable distribution of specific paths between instances.}This uses a pipeline service run on Adobe I/O, which is external to AEM.

Replication changes - The replication agents used in previous versions of AEM are no longer used or provided, which might impact the following areas of existing AEM projects:
  • Custom workflows that push content to replication agents of preview servers for example.
  • Customization to replication agents to transform content
  • Using Reverse Replication to bring content from publish back to author
5) Do we have all types of runmodes as in previous version of AEM?

The answer is NO.

Run modes that are defined typically include the service (author and publish) and the environment (dev, stage, prod).

Pattern
<service>.<environment_type>

Fr eg: author.dev or publish.prod

The supported runmode configurations in AEM as a cloud service are:
  • config ( The default, applies to all AEM Services )
  • config.author ( Applies to all AEM Author service )
  • config.author.dev ( Applies to AEM Dev Author service )
  • config.author.stage ( Applies to AEM Staging Author service )
  • config.author.prod ( Applies to AEM Production Author service )
  • config.publish ( Applies to AEM Publish service )
  • config.publish.dev ( Applies to AEM Dev Publish service )
  • config.publish.stage ( Applies to AEM Staging Publish service )
  • config.publish.prod ( Applies to AEM Production Publish service )
  • config.dev (*Applies to AEM Dev services)
  • config.stage (*Applies to AEM Staging services)
  • config.prod (*Applies to AEM Production services)

** OSGI configuration that has the most matching runmodes is used.

6) How do we do local development when AEM is in cloud?

For local development:
The following artifacts are made available to the developers:
  • The AEM as a Cloud Service QuickStart: a .jar based, standalone installer of the latest AEM code base, with the same functional and API surface.
  • The AEM as a Cloud Service Dispatcher SDK: an image-based process for testing and validating Dispatcher configurations locally

[* The quickstart is a simple author environment where the majority of the extensions can be developed and tested - does not allow for all AEM Sites and AEM Assets functionalities]

7. What are all some of the important terminologies which we should be aware of?

New important terminologies w.r.t. cloud
  • AEM as a Cloud Service - The cloud-native way of leveraging the AEM applications
  • AEM Image - A deployable artifact that contains the AEM product code together with the customer code.
  • Golden Master - The AEM publish tier.
  • Orchestration Engine - AEM as a Cloud Service uses an orchestration engine to ensure that all author and publish services are scaling as and when needed.
  • Asset microservices - Cloud-based digital asset processing services that cater to various asset processing use cases, such as rendition generation, PDF processions, subasset handling, text extraction etc.
8) What are all the types of users and roles available in AEM as a cloud?

Users & Roles

Cloud Manager currently defines four roles for users which govern the availability of specific features:
  • Business Owner - defining KPIs, approving production deployments
  • Program Manager -  team setup, review status
  • Deployment Manager - execute stage/production deployments
  • Developer - Develops and tests custom application code , do git operations

* There is a role 'Content Author' who does not interact with Cloud Manager. May use Cloud Manager Program Switcher (having navigated from Experience Cloud) to access AEM

9) How do we upgrade from existing AEM version to Cloud Service

> Planning
Access cloud service readiness - determine areas that will require refactoring to be compatible with AEM as a Cloud Service.(Source code Vs deprecated features, New path structure w.r.t AEM as cloud). Then estimate the plan.
Review resource planning - identify resources, create a team, and map out roles and responsibilities
Establish KPIs - Define KPIs to help your team focus on what matters the most.

> Execution
- onboad -familiarize & deploy the code to cloud service
- Integrate - the Git and deploy the code, content transfer, code refactor( Use tools where ever possible For eg: Asset Workflow Migration Tool, Dispatcher Converter, Modernization Tools. )
- Configure - user roles and other things on Admin console of cloud manager

> Post Go-Love
clean-up of temporary files,
review best practices for continuous development
manage logs

10) What are all the options available to troubleshoot anything in AEM as a cloud service?

The following tools are available to troubleshoot AEM as a Cloud Service environments:
  • Developer Console
  • CRX/DE Lite
  • Managing Logs

11)  What does the SDK For Local Development contains in AEM as a Cloud Service?

SDK is comprised of the following artifacts
  • Quickstart Jar - The AEM runtime
  • Java API Jar - all allowed Java APIs that can be used to develop against AEM as as Cloud Service(Previously known as Uber Jar)
  • Javadoc Jar - The javadocs for the above JAR
  • Dispatcher Tools - set of tools used to develop against Dispatcher locally
12) How does the Maintenance tasks became more users friendly now?

With AEM as a Cloud Service, the need for customers to configure the operational properties of maintenance tasks is minimal. Customers can focus their resources on application-level concerns, leaving the infrastructure operations to Adobe.

Below given customer owned the configuration
  • Ad-hoc Task Purge
  • Workflow Purge
  • Project Purge

13) Can you explain mutable vs immutable in AEM as a Cloud Service?

Mutable Vs immutable
  • /apps and /libs are considered immutable areas of AEM as they cannot be changed (create, update, delete) after AEM starts (i.e. at runtime). Any attempt to change an immutable area at runtime will fail.
  • Everything else in the repository, /content , /conf , /var , /home , /etc , /oak:index , /system , /tmp , etc. are all mutable areas, meaning they can be changed at runtime.
  • Oak indexes are mutable at run time
  • *  /oak:index configurations are part of the Code Package and not part of the Content Package

Architectural changes or improvements in AEM as a Cloud Service

Below given the noted architectural changes in AEM as a cloud service


  • Scaling - A dynamic architecture with a variable number of AEM images.
  • Has an author cluster as default;
  • Has individual instances that only run when needed.
  • Dynamically scales each of the service instances as per the actual needs; both scaling up or down as appropriate.
  • Many tasks have been automated. - like indexing , backup etc, binary-less replication is the default.
  • Micro-services sharing the processes which were done by core AEM itself: For eg: Heavy-load tasks, such as queues, jobs and bulk-processing tasks etc
  • Authoring UI is purely touch-enabled; the classic UI is no longer available
  • AEM as a Cloud Service currently supports Azure. AWS support is a roadmap item.
  • The default workflow DAM Asset Update in previous versions of AEM is no longer available.
  • No Custom replication agents & No Reverse Replication Agents are allowed in AEM as cloud

Friday, 17 July 2020

Content disposition configuration in AEM

What is Content-Disposition?
According to developer guide from Mozilla : "In a regular HTTP response, the Content-Disposition response header is a header indicating if the content is expected to be displayed inline in the browser, that is, as a Web page or as part of a Web page, or as an attachment, that is downloaded and saved locally.

Content disposition filter is a security feature against XSS attacks on SVG files.



Different values for the Content-Disposition headers
  • inline (This is the default value - indicating it can be displayed inside the Web page, or as the Web page)
  • attachment (which indicates it should be downloaded).
In AEM how the content disposition supports?
Usually people might have complained in AEM websites, the pdf or an image which is supposed to be downloaded are getting open in new tab(usually on dispatcher URL).

In AEM there is a configuration in OSGI console - 'org.apache.sling.security.impl.ContentDispositionFilter'

In AEM we can configure Content Disposition Filter in multiple ways

Content Disposition Paths
This option helps us to configure a list of paths where the content disposition filter will be applied followed by a list of mime-types to exclude on that path.

Some examples given below: 
  • /content/*:image/png This will apply the filter to every node in /content except png/content
  • /*:image/png,image/svg+xml - This will apply the filter to every node in /content except svg images
  • /content/*:audio/mpeg - For the audio of type mpeg
  • /content/*:application/pdf - For pdf files to download instead of opening in other tab
  • /content/dam/project/doc/*:image/png,image/svg+xml,image/jpeg,image/jpg
Ensure the path must be an absolute path and can contain a wildcard ('*') at the end, to match every resource path with the given path prefix.

Excluded Resource Paths
We can exclude a set of paths to be excluded, each resource path must be given as absolute and fully qualified path. In ths case prefix matching/wildcards are not supported.

Enable For All Resource Paths


This feature flag controls enablement of the filter for all paths, except for the excluded paths defined by Excluded Resource Paths.
If we set this to true, we are ignoring all content disposition paths (resource paths which has a property named 'jcr:data' or 'jcr:content jcr:data').


The Content Disposition details can be found in url

Friday, 10 July 2020

All you need to know about AEM Assets as a Cloud Service

The new 'AEM Assets as a cloud service' which is part of AEM as a cloud (platform as a service solution) provides Digital Asset Management capabilities(storage, managing metadata online, versioning, upload and download) with below extended features.
  • Based on asset microservices(asset ingestion and processing).
  • Smart capabilities, such as AI/ML
  • Highly scalable
  • Always current
  • Always available
  • Auto scaled, deployed and monitored

In older AEM all the asset operations happened at AEM Author instance - which consumes considerable CPU, memory, and I/O resource.Asset processing and storage requirements demand resources which in turn create performance issues impact authoring and browsing experience of end users.

A High-level Architecture of Assets as a Cloud Service can be seen below



The generic steps followed in sequence are,
  • Clients send an upload request - then start uploading binary directly to cloud
  • Once the direct upload is completed, the client notifies AEM
  • Now the AEM sends a processing request to Assets Microservice
  • The asset microservice now start processing the asset (based on the rendition request from AEM) - asset microservice runs relevant microservices for this. They access the binary from cloud and processed assets are also placed in binary cloud.
  • Now assets microservice notifies AEM that renditions are available.

Assets as a Cloud Service Vs AEM Asset upload on premise

Assets as a Cloud Service uses direct binary access principle for upload and download - Previously Assets were uploaded directly to AEM author instance for processing.

Assets as a Cloud Service uses 'asset microservices' for asset processing, which is external to AEM -  But in older AEM versions, all process happened within AEM.

In Assets as a Cloud Service DAM Asset Update Not available [ asset microservices provide a scalable, readily available service that covers most of the default asset processing (renditions, metadata extraction, text extraction for indexing)]. But in older AEM we had DAM Asset Update workflow as default.

Assets as a Cloud Service comes with post-processing workflows which can be used or customizations(where additional processing of assets is required that cannot be achieved using the processing profiles) -In older AEM we had default + customized workflow steps (Even though it looks as an advantage it had used AEM for all processing).

In Assets as a Cloud Service the standard Asset upload interface is the Touch-enabled UI -  In older version Classic UI was available.

In Assets as a Cloud Service only the new upload APIs are supported -The older AEM Assets HTTP API(AEM 6.5), AssetManager Java API, is deprecated now

Advantages of new cloud
  • The uploaded binaries do not go through AEM, which is now simply coordinating the upload process with the binary cloud storage configured for the deployment. finally clients get direct access to them to carry out their work. This minimizes the load on networks and duplication of binaries stored.
  • Binary cloud storage is fronted by a Content Delivery Network (CDN, Edge Network), which brings the upload endpoint closer to the client, helping to improve upload performance and user experience, especially for distributed teams uploading assets
  • More scalable and performant handling of asset uploads.

Ways of uploading Assets to Assets as a Cloud Service
Upload using web interface, Adobe Asset Link, AEM desktop app or custom applications which uses the new HTTP API.

Post-processing workflows
There are cases where we need additional processing to be done, which are not done by asset microservices(For eg. Generating a rendition which requires an integration with other application), additional post-processing workflows can be added to the configuration.

Post-processing workflows, once configured, are automatically executed by AEM after the microservices processing finishes. There is no need to add workflow launchers manually to trigger them.

Some examples for Post Processing workflow use cases are:
  • Custom workflow steps to process assets.
  • Additional processing done by external services.
  • Integrations to add metadata or properties to assets from external systems

How to create Post - Processing Workflows: Steps involved
  1. Create one or more workflow models. - they are of regular AEM workflow models
  2. Add specific workflow steps to these models.
  3. Add 'DAM Update Asset Workflow Completed' Process step at the end(To inform AEM once the processing is done)
  4. Create a configuration for the Custom Workflow Runner Service(configuration of an OSGi service) - This ensures the execution of a post-processing workflow model either by a path (folder location) or by a regular expression.
Supported File Formats

Adobe formats - AI, COLLAGE, DN, IDEAS, INDD, INDT, PDF, PROTO, PSB, PSD, XD
Imaging file formats - BMP, EPS, GIF, JPEG, PNG, SVG, TIFF
Image formats in Dynamic Media - PNG, GIF, TIFF, JPEG, BMP, PSD , EPS, PICT
3D formats - DN, gLB, gLTF, OBJ, STL, USDz
Camera Raw file formats - 3FR, ARW, CR2, CR3, CRW, DCR, DNG, ERF, FFF, GPR, IIQ, KDC, MEF, MFW, MOS, MRW, NEF, NRW, ORF, PEF, RAF, RAW, RW2, RWL, SRF, SRW, X3F
Document formats - PDF,DOCX,DOC,PPTX,PPT, XLSX,XLS,ODF,OFG,ODM,ODP,ODS,ODT,EPUB,HTML,PS,RTF,TXT,XML
Document formats in Dynamic Media - AI, PDF, INDD
Video formats - 3G2,3GP,AVI,DIVX,F4V,FLV,M2T,M2TS,M2V,M4V,MKV,MOV,MP4,MPEG,MPG,MTS,OGV,QT,R3D,SWF,WEBM,WMV
Video formats in Dynamic Media for transcoding - MP4,MOV, QT,FLV, F4V,WMV,MPG, VOB, M2V, MP2,M4V,AVI,WebM,OGV, OGG,MXF,MTS,MKV,R3D, RM,RAM, RM,FLAC,MJ2,
Audio formats  - AIF, ASF, M4A, MP3, WAV, and WMA