hyperledger-composer

I want to write a query in HyperLedger Composer that returns me the count of assets that I have in hyper ledger. I have thousands of records. I don't want to fetch them all and calculate count. Data transfer will be slow I want the query to return the count. Unfortunately there is no count in the composer query language. You would have to create a query to select all the assets then check the length of the results. For example with the Basic Sample Network: query selectAssets { description: "Select all assets" statement: SELECT org.example.basic.SampleAsset } then execute it: let results =

I am following steps in https://fabric-composer.github.io/managing/identity-issue.html to check the identity issuing for participants. I get no errors and when executing: composer identity issue -n 'mychain-network' -i WebAppAdmin -s DJY27pEnl16d -u user1 -a "com.example.model.Owner#userid" I get correctly: The participant can now connect to the business network with the following details: userID = user1 userSecret = kJoWHaYCxnes The problem is that later I don't get the participant when pinging: $ composer network ping -n 'mychain-network' -i user1 -s kJoWHaYCxnes The connection to the

Hi I'm having problem when trying to composer network install Installing business network. This may take a minute... Error: Error trying install business network. Error: No valid responses from any peers. Response from attempted peer comms was an error: Error: 14 UNAVAILABLE: Connect Failed composer network install rbo13 Make sure docker is running From their documentation, Installing pre-requisites Docker is required. Then try docker ps , check if the peer node/s is listed. Then try to ping your network with composer network ping --card admin@<some_network> Check if docker login is working.

I have tried executing a sample case of transfer of money between two accounts while referring to this: https://medium.freecodecamp.org/ultimate-end-to-end-tutorial-to-create-an-application-on-blockchain-using-hyperledger-3a83a80cbc71 I have executed all steps, from creating .bna and .card to installing them, starting the network etc. On creating the RESTful API, I am able to see the blockchain on localhost:3000/explore. I am also able to add customers and their linked account details. However, while performing money transfer, there are two fields that are generated by default : transactionId

How do composer network represented in fabric runtime. Is the assets instances created in composer network have one to one relationship with assets created in actual fabric runtime? Fabric doesn't have the concept of assets -- it uses a key/value store (LevelDB) or can use CouchDB (JSON store). When a Composer transaction is processed (which corresponds to an invokeChaincode transaction for Fabric), any assets that are created are stored as new keys in the key-value store, or documents in the JSON store. Composer organises assets and participants into "registries", which are used to construct

I see the following errors when run command npm install -g composer-cli@0.20 nvm 0.33.0 npm 6.4.1 node 10.13.0 I'm trying to the Hyperledger in my local Mac OS but it keep failing when I run the command. I followed this guide to install it https://hyperledger.github.io/composer/latest/installing/development-tools.html here's the error part: grpc@1.10.1 install /Users/jason/.nvm/versions/node/v10.13.0/lib/node_modules/composer-cli/node_modules/grpc node-pre-gyp install --fallback-to-build --library=static_library node-pre-gyp ERR! Tried to download(403): https://storage.googleapis.com/grpc