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Questions tagged [hyperledger-chaincode]

448 questions
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failed to invoke chaincode name:"lscc" , error: transaction returned with failure: Undefined contract method called

i'm trying to install java chaincode of facar from fabric-samples but getting error. https://github.com/hyperledger/fabric-samples/tree/release-1.4/chaincode/fabcar/java above chaincode i'm trying & getting error during instantiation of…
Prafull Rawal
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The changed code in chaincode does not take effort after restart the BYFN network?

I'm writing chaincode application using the provided byfn network in hyperledger fabric V1.4. When i add or delete some codes, i shutdown the byfn network and remove the docker container, and then restart the byfn network, install and instantiate…
liuqi
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Integration between APPs in Hyperledger-Fabric

I have 2 applications (App1/App2) are deployed on same Hyperledger-Fabric network and both are running on different channel . We have simple requirement to share some data from App1 to App2 . So the question is : how to make the integration between…
Koptan
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Chaincode Query Transcation is not executing in EC2 Insance

please find the image first intsertion was happened sucessfully.I am trying to query my transaction in Amazon-EC2 but it is returning NULL with endorsement failure even though my insertion transaction is working fine in the local system. This is the…
nagendra megavat
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How to add events in chaincode? (Hyperledger Fabric)

I am trying to make events work in Hyperledger Fabric. I have written the setEvent function in my chaincode and added a listener (addContractListener) in my application file. Nothing seems to happen In my contract file, right after a putState…
Yash Damani
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How I can deploy a couchDb index for my Hyperledger Fabric chaincode?

I'm trying to deploy a chaincode with a couchdb index, but it's not working. I use Hyperledger fabric version 2.0 alpha and my chaincode is in go. This is my index {"index":{"fields":["price"]},"ddoc":"indexPriceDoc",…
pigoth
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Is it possible to use external node module in our fabric chainCode/ smart contract?

I am trying to write a chainCode and for the implementation of logic, I need to use an external node package, which is not a part of fabric API. Is it possible to do that? I've never seen a chainCode example, which requires an external node module.…
ethertest
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Hyperledger Fabric - Implementing transaction types and configuring endorsement policies for each transaction type

In Hyperledger Fabric, one asset has multiple transactions. These transactions update the state of the asset and maintain a trace as well. Currently, if I want to have different transaction types for one asset, then I've written different functions…
Raman Kishore
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Track who did what using digital signatures

Currently I'm working with Hyperledger Fabric. I want to track info who submitted a transaction. Is there someone who can help my with this problem ? Who can tell what should i do?
TienThanh
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How to use stub.getTransient() in Node Chaincode

I have a chaincode written in node.js and I am trying to read transient values but it's not working properly: my code: let secretData = stub.getTransient(); let value = secretData.get('privayeKey').toBuffer().toString('utf8') value is not correct.…
Narayan Prusty
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Issue with instantiating contract as per the MagnetoCorp example

Whenever I try to instantiate a contract according to the MagnetoCorp example, I receive the following errors. In the terminal: $ docker exec cliMagnetoCorp peer chaincode instantiate -n papercontract -v 0 -l node -c …
mp94
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GetStateByPartialCompositeKey by a specific key not working

Currently I'm working with Hyperledger chaincode, I have a problem with the method "GetStateByPartialCompositeKey". They index consists of 3 parts (key1~key2~key3). If i try GetStateByPartialCompositeKey(index, key1) , it works perfectly. But If…
TienThanh
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How to get Transaction Submitter in Hyperledger Fabric chaincode

Currently I'm working with Hyperledger Fabric chaincode and trying to get at least any info regarding current user who invokes/queries chaincode. How do I solve this problem?
TienThanh
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Chaincode instantiation error, log says npm err! missing script: start, even though package.json with start script is present

I'm trying to install and instantiate chaincode in a hyperledger fabric network setup by me. I've written the chaincode in node.js and it installs perfectly from bash of cli container. But when I try to instantiate the chaincode it gives error…
Varan Shukla
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Debug my already instanitated nodejs chaincode

I have developed Node.js chaincode in dev mode by following these three steps peer chaincode install -n {} -v {} -p {} -l node peer chaincode instantiate -n {} -v {} -c {} -o {} -C mychannel peer chaincode invoke -n {} -v {} -o {} -c{} Now each…
Rohit Kumar
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