chaincode | HyperLedger Fabric chaincode samples | Runtime Evironment library

I am using Hyperledger Fabric v2.3.1.I am trying to approve my chaincode definition with argument --signature-policy "OR('Org1MSP.peer','Org2MSP.peer')" instead of the default endorsement for the test-network. The whole command is below

I am currently running hyperledger fabric v2.2. I have developed the chaincode using the contractapi and developing the application using fabric-sdk-go/pkg/gateway

How can i get the transaction status and the transaction payload? I am aware of the GetHistoryByKey() which is available in the contractapi but that doesn't works out for my application.

I know there is hyperledger-explorer which can be used to search transactions by TxID but my use-case is my application will be querying by TxID and then it will verify the status of that particular transaction (TxID).

Also, i have tried to achieve this using the fabsdk but i am getting an error when i try to create instantiate the fabsdk using the fabsdk.New(). There seems to be some compatibility issue with the connection-profile.json which i am using the fabric-sample project.

The error which i am getting is:

failed to create identity manager provider: failed to initialize identity manager for organization: MyOrgName: Either a cryptopath or an embedded list of users is required

The same connection-profile has been used in getting the network up and running, and everything seems to be working all good. I am able to submit and evaluate transactions.

SOLUTION

The system chaincodes are embedded in the peer itself. so we need to set the target otherwise it would just give the discovery error since the contract QSCC is not explicitly deployed on the channel.

Make sure to check the core.yaml file channel.system - the system chaincode should be enabled channel.system.qscc: enable

I am trying to set up a Hyperledger Fabric Network with Hyperledger Explorer. I spin up a VM on the digital ocean cloud with ubuntu OS. From there, I spin up 3 orderers node, and 2 peers node. Which result in total of 5 nodes. (I am using RAFT setup).

However, I encounter the error as below when trying to start the hyperledger fabric explorer docker-container images.

When a Hyperledger Fabric smart contract calls getHistoryForKey it receive the updates for a particular key. I'm wondering where does this information come from? It's not stored in the world-view (levelDB, CouchDB) so it must be retrieved from the blockchain. Does the smart contract has access to blockchain? What am I missing?

I'm using the Vault's Kubernetes Helm Chart.

Before proceeding, I'd like to mention that my issue is extremely similar to this one, but it didn't help.

So, inside Vault, I need to load a custom plugin, which has two dependencies: libpbc and libgmp. While trying to install the plugin, I get this error: * fork/exec /vault/plugins/plugin_name: no such file or directory which is not normal, for the simple reason that everything seems okay (the plugin_directory (a Vault dependency) exists, the plugin is indeed under /vault/plugins etc).

So, by investigating, I found out that there is a big issue. Executing ldd /vault/plugins/*plugin_name*, I get:

I am trying to collect this kind of logs from a docker container:

I followed the IBM Blockchain Tutorial "A4: Invoking a smart contract from VS Code". I created a demo-contract project with the IBM Blockchain extension as describes in the tutorial with the contract language "TypeScript". But on step A4.4 I can't expand the channels tree in the Fabric Gateways view to show the available transactions.

I am using a Mac with the latest VS Code and IBM Blockchain Extension, as well as the latest Docker Desktop version 3.3.3.

I notices that there is a problem during the deployment of the contract to the "1 Org Local Fabric" environment (for the complete log please see below):

I am trying to execute a smart contract on the Hyperledger fabric test-network (Fabcar javascript smart contract) and I get the follwing error when I try to invoke the chaincode using the invoke.js file present in the fabcar javascript example:

error: [ServiceEndpoint]: Error: Failed to connect before the deadline on Committer- name: orderer0.example.com:7050, url:grpcs://localhost:7050, connected:false, connectAttempted:true 2021-05-05T23:44:02.951Z - error: [ServiceEndpoint]: waitForReady - Failed to connect to remote gRPC server orderer0.example.com:7050 url:grpcs://localhost:7050 timeout:3000 2021-05-05T23:44:02.952Z - error: [DiscoveryService]: _buildOrderer[mychannel] - Unable to connect to the discovered orderer orderer0.example.com:7050 due to Error: Failed to connect before the deadline on Committer- name: orderer0.example.com:7050, url:grpcs://localhost:7050, connected:false, connectAttempted:true 2021-05-05T23:44:05.957Z - error: [ServiceEndpoint]: Error: Failed to connect before the deadline on Endorser- name: peer0.org01.example.com:7051, url:grpcs://localhost:7051, connected:false, connectAttempted:true 2021-05-05T23:44:05.957Z - error: [ServiceEndpoint]: waitForReady - Failed to connect to remote gRPC server peer0.org01.example.com:7051 url:grpcs://localhost:7051 timeout:3000 2021-05-05T23:44:05.958Z - error: [DiscoveryService]: _buildPeer[mychannel] - Unable to connect to the discovered peer peer0.org01.example.com:7051 due to Error: Failed to connect before the deadline on Endorser- name: peer0.org01.example.com:7051, url:grpcs://localhost:7051, connected:false, connectAttempted:true

One thing to note is that I have changed port forwardings and peer/org names in the default test-network. My connection profile is as follows (removed certificates for clarity):

I am trying to do backup and restore of a hyperledger fabric network v2.2.0. To test this, I used test-network of fabric release - https://github.com/hyperledger/fabric-samples/archive/refs/tags/v2.2.0.tar.gz. First I brought up the network, created the channel, deployed CC and performed invoke, query. Then I took backup by following the article - https://www.devprovider.com/how-to-take-backup-from-hyperledger-fabric. Once done with the backup, I have deleted the network. Then I tried to restore from the backup data (crypto-materials of orderer, peers, channel-artifacts, peer data and the orderer data). I confirmed that the restoration was successful by comparing the channel height from the network I have deleted and the restored network. It was 8 at the time when I took backup. So to check if everything is working from Chaincode perspective, I have tried query which resulted in error,

Error: endorsement failure during query. response: status:500 message:"error in simulation: failed to execute transaction 392e33eaadd537650590479036a1018946dcbbebaf3d55cbddb288e243485e80: could not launch chaincode basic_1.0:4ec191e793b27e953ff2ede5a8bcc63152cecb1e4c3f301a26e22692c61967ad: error starting container: error starting container: API error (404): network _test not found"

Same error for invoke. Can anyone please guide me on how to overcome the failure of CC invoke and query? Thanks in Advance!