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Hyperledger Composer

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Rihusoft

Composer is a framework to accelerate the development of applications built on the top of Blockchain platform such as Hyperledger Fabric.Here we have complete information about Composer and Playground for more information please visit our youtube channel https://www.youtube.com/edit?o=U&video_id=EvICyArbFSs www.rihusoft.com

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Hyperledger Composer
Hyperledger Tools         Set of collaboration tools for building blockchain networks that make it simple and quick  for development.   Hyperledger Composer  Composer is a  tool for building blockchain business networks, It used to create  smart contracts and blockchain applications to solve business problems.  Hyperledger Explorer  Explorer is a tool which provides a dashboard viewing information about  transactions ,blocks and smart contracts available on the network.  Hyperledger Cello  Cello can build up a Blockchain as a Service (BaaS) platform quickly from the  scratch. It reduce the effort required for creating, managing and terminating  blockchains.
Smart Contract :- computer protocol intended to facilate, verify or enforce the  negotiation or performance of contract Mining :- Adding transactions to the ledger Peers :-   Each node (a computer connected to the network) is called peer Endorser :-Peer will simulate the transaction and ensure that the outcome is both  deterministic and stable Committer :-The peer will validate the integrity of a transaction and then append to  the ledger. Endorsement policy:- Instruct a peer on how to decide whether a transaction is  properly endorsed Transactions:-  Transactions are submitted by a participant to affect the assets held in  the asset registries on the Hyperledger blockchain Consensus:- An agreement made between peers or organizations Quick Notes
HyperLedger Composer  Composer is a framework to accelerate the development of applications built on the  top of Blockchain platform such as Hyperledger Fabric  Start from the business level :model network assets, participants & transactions  Build Applications that use API's to invoke transactions, that create, update &delete  Assets are transfer  between participants  Assets, participants ,transactions are recorded on Blockchain registries  Can easily integrate blockchain with existing business processes & system records  Modelling language: The Hyperledger Composer modelling language is used in the  business network definition to describe the assets, participants, and transactions in  the business network
Hyperledger Composer
HyperLedger Composer Benfits
Asserts :- Assets are tangible or intangible goods, services, or property, and are stored in registries. Participants :- Participants are members of a business network. They may own assets and submit transactions. Peers :- Each node (a computer connected to the network) is called peer Transactions :-Transactions are the mechanism by which participants interact with assets, i.e transferring ownership of the asset from participant to participant Queries :-Queries are used to return data about the blockchain world-state. Queries are defined within a business network Events:- Once events have been defined, they can be emitted by transaction processor functions to indicate to external systems that something of importance has happened to the ledger Terminology
Prerequisites:  Operating Systems: Ubuntu Linux 14.04 / 16.04 LTS (both 64-bit), or Mac OS 10.12  Docker Engine: Version 17.03 or higher  Docker-Compose: Version 1.8 or higher  Node: 8.9 or higher (note version 9 is not supported)  npm: v5.x  git: 2.9.x or higher  composer-cli  Yeoman generator  composer-rest-server
Developing Business from Composer  Creating business network with model,java Script and permission.acl files  Next generate the business network archieve file with .bna extension  Install composer run time for our business network with peer admin card  Start the composer network and deploy bna file  Import the network administrator identity card  To check that the business network has been deployed successfully or not we can just ping the business network  To create the REST API run the “composer-rest-server” from terminal  For tutorial “https://youtu.be/EvICyArbFSs”
HyperLedger Composer Rest API After creating composer rest server for our business network we can access the API from localhost 3000 port and we can do transaction from API and also the data will store in Couchdb
Couchdb We can access couchdb at localhost 5984 port ,all transaction done from rest api and playground Will store in couchdb in the form of documents with unique id
Composer Playground  The Hyperledger Composer Playground provides a user interface for the configuration, deployment and testing of a business network  Without development environment setup we can still develop business network by playground  In playground we can create or import network.bna file to generate or develop business network  Playground mainly deals with assets, participants and transactions  If we do anything in the business network that will be save in transaction history which cannot be change  Define tab:- Define tab we can define and work with model for your business network  Test tab:-can create assets and participants that were defined in the Define tab, and test the functionality of your business network..
Developing Business network in playground  Click Deploy a new business network    Click empty-business-network then Deploy the Business network  To connect to our business network click Connect now under our business network card.  Then add model file,script file and Access control file  Click Update to deploy the changes to our business network  Click the Test tab to test our Business network  The first thing we should add to our business network is to add  participants and assests.  Click the Submit Transaction button to submit our transactions  We can see all transactions in our business network by Click  All Transactions
HyperLedger-Composer PlayGround
HyperLedger-Composer PlayGround These are all different id cards for different participants in the business network.By clicking Connect now on card we can connect to business network by that participant id
Deploying a business network to Hyperledger Fabric for a single organization Step-1 : Setup the development environment. - https://hyperledger.github.io/composer/unstable/installing/development-tools.html Step-2 : Build and start a Hyperledger Fabric network. - http://hyperledger-fabric.readthedocs.io/en/release/build_network.html Step-3 : Setup configuration tools cryptogen and configtxgen. Step-4 : Create a connection profile use to connect with the Fabric network. Step-5 : Locate the certificate and private key for the administrator.
Step-6 : Create a business network card that contains all of the information required to connect to the business network. i.e, It includes Connection profile, Private key and Certificate. Step-7 : Import the business network card for the Hyperledger Fabric administrator. Step-8 : Install Composer runtime onto all of the Hyperledger Fabric peer nodes, this is nothing but a chaincode install operation. Here we specify the name of the blockchain business network. Step-9 : Start the blockchain business network, this is chaincode instantiate operation. Step-10 : Import the business network card for the business network administrator. Step-11 : Check that the business network has been deployed successfully. Step-12: Generate a REST API based on the business network.
References  https://hyperledger.github.io/composer/playground/playground-index.html  https://hyperledger.github.io/composer/tutorials/deploy-to-fabric-multi-org.html  https://hyperledger.github.io/composer/tutorials/developer-tutorial  https://github.com/hyperledger/cello/blob/master/docs/terminology.md  http://hyperledger.org/  https://www.youtube.com/edit?o=U&video_id=EvICyArbFSs
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Hyperledger Composer

  • 2. Hyperledger Tools         Set of collaboration tools for building blockchain networks that make it simple and quick  for development.   Hyperledger Composer  Composer is a  tool for building blockchain business networks, It used to create  smart contracts and blockchain applications to solve business problems.  Hyperledger Explorer  Explorer is a tool which provides a dashboard viewing information about  transactions ,blocks and smart contracts available on the network.  Hyperledger Cello  Cello can build up a Blockchain as a Service (BaaS) platform quickly from the  scratch. It reduce the effort required for creating, managing and terminating  blockchains.
  • 3. Smart Contract :- computer protocol intended to facilate, verify or enforce the  negotiation or performance of contract Mining :- Adding transactions to the ledger Peers :-   Each node (a computer connected to the network) is called peer Endorser :-Peer will simulate the transaction and ensure that the outcome is both  deterministic and stable Committer :-The peer will validate the integrity of a transaction and then append to  the ledger. Endorsement policy:- Instruct a peer on how to decide whether a transaction is  properly endorsed Transactions:-  Transactions are submitted by a participant to affect the assets held in  the asset registries on the Hyperledger blockchain Consensus:- An agreement made between peers or organizations Quick Notes
  • 4. HyperLedger Composer  Composer is a framework to accelerate the development of applications built on the  top of Blockchain platform such as Hyperledger Fabric  Start from the business level :model network assets, participants & transactions  Build Applications that use API's to invoke transactions, that create, update &delete  Assets are transfer  between participants  Assets, participants ,transactions are recorded on Blockchain registries  Can easily integrate blockchain with existing business processes & system records  Modelling language: The Hyperledger Composer modelling language is used in the  business network definition to describe the assets, participants, and transactions in  the business network
  • 7. Asserts :- Assets are tangible or intangible goods, services, or property, and are stored in registries. Participants :- Participants are members of a business network. They may own assets and submit transactions. Peers :- Each node (a computer connected to the network) is called peer Transactions :-Transactions are the mechanism by which participants interact with assets, i.e transferring ownership of the asset from participant to participant Queries :-Queries are used to return data about the blockchain world-state. Queries are defined within a business network Events:- Once events have been defined, they can be emitted by transaction processor functions to indicate to external systems that something of importance has happened to the ledger Terminology
  • 8. Prerequisites:  Operating Systems: Ubuntu Linux 14.04 / 16.04 LTS (both 64-bit), or Mac OS 10.12  Docker Engine: Version 17.03 or higher  Docker-Compose: Version 1.8 or higher  Node: 8.9 or higher (note version 9 is not supported)  npm: v5.x  git: 2.9.x or higher  composer-cli  Yeoman generator  composer-rest-server
  • 9. Developing Business from Composer  Creating business network with model,java Script and permission.acl files  Next generate the business network archieve file with .bna extension  Install composer run time for our business network with peer admin card  Start the composer network and deploy bna file  Import the network administrator identity card  To check that the business network has been deployed successfully or not we can just ping the business network  To create the REST API run the “composer-rest-server” from terminal  For tutorial “https://youtu.be/EvICyArbFSs”
  • 10. HyperLedger Composer Rest API After creating composer rest server for our business network we can access the API from localhost 3000 port and we can do transaction from API and also the data will store in Couchdb
  • 11. Couchdb We can access couchdb at localhost 5984 port ,all transaction done from rest api and playground Will store in couchdb in the form of documents with unique id
  • 12. Composer Playground  The Hyperledger Composer Playground provides a user interface for the configuration, deployment and testing of a business network  Without development environment setup we can still develop business network by playground  In playground we can create or import network.bna file to generate or develop business network  Playground mainly deals with assets, participants and transactions  If we do anything in the business network that will be save in transaction history which cannot be change  Define tab:- Define tab we can define and work with model for your business network  Test tab:-can create assets and participants that were defined in the Define tab, and test the functionality of your business network..
  • 13. Developing Business network in playground  Click Deploy a new business network    Click empty-business-network then Deploy the Business network  To connect to our business network click Connect now under our business network card.  Then add model file,script file and Access control file  Click Update to deploy the changes to our business network  Click the Test tab to test our Business network  The first thing we should add to our business network is to add  participants and assests.  Click the Submit Transaction button to submit our transactions  We can see all transactions in our business network by Click  All Transactions
  • 15. HyperLedger-Composer PlayGround These are all different id cards for different participants in the business network.By clicking Connect now on card we can connect to business network by that participant id
  • 16. Deploying a business network to Hyperledger Fabric for a single organization Step-1 : Setup the development environment. - https://hyperledger.github.io/composer/unstable/installing/development-tools.html Step-2 : Build and start a Hyperledger Fabric network. - http://hyperledger-fabric.readthedocs.io/en/release/build_network.html Step-3 : Setup configuration tools cryptogen and configtxgen. Step-4 : Create a connection profile use to connect with the Fabric network. Step-5 : Locate the certificate and private key for the administrator.
  • 17. Step-6 : Create a business network card that contains all of the information required to connect to the business network. i.e, It includes Connection profile, Private key and Certificate. Step-7 : Import the business network card for the Hyperledger Fabric administrator. Step-8 : Install Composer runtime onto all of the Hyperledger Fabric peer nodes, this is nothing but a chaincode install operation. Here we specify the name of the blockchain business network. Step-9 : Start the blockchain business network, this is chaincode instantiate operation. Step-10 : Import the business network card for the business network administrator. Step-11 : Check that the business network has been deployed successfully. Step-12: Generate a REST API based on the business network.
  • 18. References  https://hyperledger.github.io/composer/playground/playground-index.html  https://hyperledger.github.io/composer/tutorials/deploy-to-fabric-multi-org.html  https://hyperledger.github.io/composer/tutorials/developer-tutorial  https://github.com/hyperledger/cello/blob/master/docs/terminology.md  http://hyperledger.org/  https://www.youtube.com/edit?o=U&video_id=EvICyArbFSs