Title	A simpler and easy way to handle endorsement policies with Hyperledger Fabric based products
Status	COMPLETED
Difficulty	MEDIUM

Description

Introduction

Endorsement policy controls the approval of a proposal to be executed at various granular levels.
In other words, this is the primary entity which is validated before a transaction is committed.
Endorsement policy can operate at two different granularities:

Namespace level: They can be set for the whole namespace.
This is the default approach in which endorsement policies are specified in the chaincode definition,
which is agreed to by channel members and then committed to a channel
Individual key level: They can be set for individual state keys called private data collections.
You can also specify an endorsement policy at the private data collection level,
which would override the chaincode level endorsement policy for any keys in the private data collection.
This would further restrict which organizations can write to a private data collection.

Problem Statement

This becomes complex to handle when operating at scale.

Some usecases

Complex endorsement policy resolving for namespace level ones
Tracking Endorsement policies on large quantity Private data collections each having different endorsement policies
Resolving policy for a given object combining namespace level with overiding individual key-level ones.

Additional Information

Understanding endorsement policies in Hyperledger Fabric v2.x - https://hyperledger-fabric.readthedocs.io/en/release-2.0/endorsement-policies.html
Understanding chaincode - https://hyperledger-fabric.readthedocs.io/en/release-2.0/chaincode4noah.html

Learning Objectives

Understanding of hyperledger fabric concepts
Learn to manage (write/install/execute) hyperledger smart contracts (chaincode)
Good exposure to DLT technologies
Understand De-centralised transaction endorsement concepts
Gain Hands-on experience with opensource software development

Expected Outcome

A library/set of tools implementation thats able to ease endorsement policy handling
Good documentation with diagrams in github
Unit and integration tests for the implementation