hyperledger-composer

Other than the fact that Composer makes deployment and testing of prototype business networks easier and the fact that we don't have to know golang to develop chaincode, what is the difference in the functionalities that these interfaces provide that may lead one to choose one over the other? This article can probably provide you with the answers you need: https://blog.selman.org/2017/07/08/getting-started-with-blockchain-development/ Hyperledger Composer is both an application development framework and set of powerful tools which simplifies and expedites the creation of blockchain

for deploying hyperledger fabric network using composer do i need to deploy composer per orgs (here in this case i'm using 2 orgs on 2 physical machine) or i setup of composer for all orgs is required? anyone have idea on this? Hyperledger Composer can be used against any hyperledger fabric network topology you have defined, you just need to configure connection profiles and build business network cards with these profiles for the actions you want to perform. The best place to understand the connection profile requirements for a multi-organisation setup is in the multi-org tutorial on the

I have tried to deploy a business network using composer to but it fails with the following error Error: event message must be properly signed by an identity from the same organization as the peer: [Expected MSP ID Org1MSP, received ]] what is the problem ? There are several reasons why you might get this error You are not running composer v0.8.0 or higher. You can check what level you are running by invoking the command composer -v You haven't specified a valid hlfv1 profile or you forgot to specify the profile to use on the network deploy command. If you have followed the tutorials and

I'm able to write some simplistic smart contracts using my composer development environment but am confused about when to persist assets and participants into the registry. I've read the docs on composer-runtime.AssetRegistry and the getAssetRegistry function to return an asset registry object and to perform updates but am still not clear which assets/partipants to update. Here's an example (may not be fully working): participant Trader identified by userID { o String userID o String firstName o String lastName } participant Bank identified by bankID { o String bankID o String description -->

I did the tutorial to deploy to a multi org fabric network and it worked successfully . Now i have two admin cards - alice@trade-network , bob@trade-network and two identities/cards issued by them - jdoe@trade-network , dlowe@trade-network Now i have given access control rules stating that jdoe (trader1-org1) and dlowe(trader2-org2) can only view their own records Thus when i connect to their respective business cards i am able to view only their records . Now i can start two rest servers each (2 ports) for jdoe and dlowe which enables view of their records only through their rest api

I am following a hyperledger composer tutorial . I am not able to execute step 15. while executing command : composer identity request -c PeerAdmin@byfn-network-org1-only -u admin -s adminpw -d alice I am getting the following error: Error: failed to request identity. Error trying to enroll user and return certificates. Error: Calling enrollment endpoint failed with error [Error: connect ECONNREFUSED 127.0.0.1:7054] When I checked the running containers, CA is not running.. If this is the case then i don't understand why there isn't a command to start CA in the byfn script. Can anyone suggest