I have deployed fabcar example, with Raft consensus algorithm.
I ran peer channel fetch without problems.
I can see that the retrieved block is number 8, and that the information has been written to the file mychannel.block.
When I run the command "configtxlator" to be able to read the file in JSON format, it returns the following error:
" error decoding: message of type %!s() unknown hyperledger
fabric"
Related
Been learning a bit about both Hyperledger Fabric and Hyperledger Caliper recently.
Recently have been following the Hyperledger Caliper Fabric benchmarking tutorial here to learn a bit more about it.
It uses the Fabric Samples network as an example with the sample chaincode used being the asset-transfer-basic javascript.
When running caliper for creating 1000 assets for example.
I get an occasional error initializing the test during the asset creation operation, like this:
2021-05-05T21:28:58.344Z - error: [DiscoveryHandler]: compareProposalResponseResults[undefined] - read/writes result sets do not match index=1
2021-05-05T21:28:58.344Z - error: [Transaction]: Error: No valid responses from any peers. Errors:
peer=undefined, status=grpc, message=Peer endorsements do not match
2021.05.05-22:28:58.344 error [caliper] [connectors/v2/FabricGateway] Failed to perform submit transaction [CreateAsset] using arguments [0_231,blue,20,penguin,500], with error: Error: No valid responses from any peers. Errors:
peer=undefined, status=grpc, message=Peer endorsements do not match
The sample chaincode operation is pretty simple:
// CreateAsset issues a new asset to the world state with given details.
async CreateAsset(ctx, id, color, size, owner, appraisedValue) {
const asset = {
ID: id,
Color: color,
Size: size,
Owner: owner,
AppraisedValue: appraisedValue,
};
ctx.stub.putState(id, Buffer.from(JSON.stringify(asset)));
return JSON.stringify(asset);
}
Is there any particular reason errors like this happen? Even if occasionally.
The tutorial in caliper explicitly checks out a specific tag in the fabric-samples. This is because there is a bug in the chaincode examples in the main branch which isn't present in the specific git commit. That bug causes the problem you are seeing
You have actually included that bug in the snippet you posted. In the chaincode it's the line
ctx.stub.putState(id, Buffer.from(JSON.stringify(asset)));
which is incorrect. It should be
await ctx.stub.putState(id, Buffer.from(JSON.stringify(asset)));
I am using Hyperledger Fabric 1.4.1, with Kafka ordering service, Couch DB as stateDB, Java chaincode and Java SDK.
I experience timeout expired when I try to send large data to the channel and then query it back.
The data size of the transaction I sent is 512KB, and I can query it from peers.
I tried sending it 7 times with the same id, and I can get all 7 histories with shim function getHistoryForKey. But when I sent it 8 times with the same id, getHistoryForKey failed.
The error message is shown below (from peers):
Error: endorsement failure during query. response: status:500 message:"failed to execute transaction fdfbc5b72efd688136c777f5b114a3cedc62339e42f6c39a27e86ca11b8e3d14: error sending: timeout expired while executing transaction"
I have tried to expand the timeout with following options and their combinations in peer and client:
CORE_CHAINCODE_EXECUTETIMEOUT="120s"
CORE_LEDGER_STATE_COUCHDBCONFIG_REQUESTTIMEOUT="120s"
# (seems this setting is not for Hyperledger Fabric)
CORE_PEER_GRPCOPTIONS_REQUESET_TIMEOUT="120s"
But they didn't help in my case.
I also noticed that the 7 copies of testing data are about 3.5MB, and I tried to query 4MB data (which is about 8 copies) from a peer but failed.
When we check the chaincode runtime docker, we see the following error message:
SEVERE: An error occured on the chaincode stream. Shutting down the chaincode stream.
io.grpc.StatusRuntimeException: RESOURCE_EXHAUSTED:
io.grpc.netty.NettyClientTransport$3: Frame size 6294852 exceeds maximum: 4194304.
It seems like there is a grpc limitation on running the java chaincode docker.
We tested with go chaincode, we do not experience the same issue.
We managed to fix that by overriding the ChaincodeBase class
ManagedChannelBuilder<?> newChannelBuilder() throws IOException {
final NettyChannelBuilder builder = NettyChannelBuilder.forAddress(host, port);
logger.info("Configuring channel connection to peer.");
builder.maxInboundMessageSize(104857600);
logger.info("maxInboundMessageSize is 104857600.");
if (tlsEnabled) {
builder.negotiationType(NegotiationType.TLS);
builder.sslContext(createSSLContext());
} else {
builder.usePlaintext(true);
}
return builder;
}
I have submitted a ticket on fabric Jira to support changing the variable without overriding.
I am looking to setup a simple Hyperledger Fabric network without using docker and trying to create channel by following this tutorial using Node.js.
Steps i performed:
Setup crypto-config.yaml and generated crypto-material (crypto-config)
Setup fabric-ca-server-config.yaml by updating keyfile & certfile. started CA server
Setup configtx.yaml by defining one orderer and one organization. Created genesis block and configuration transaction
Now by when i run above tutorial node.js code, i get error on order terminal & as response of node.js call:
2019-01-09 16:16:54.619 IST [msp] DeserializeIdentity -> INFO 007
Obtaining identity
2019-01-09 16:16:54.619 IST [orderer/common/broadcast] Handle -> WARN 008 [channel: firstchannel]
Rejecting broadcast of config message from 127.0.0.1:44198 because of
error: Failed to reach implicit threshold of 1 sub-policies, required
1 remaining: permission denied
I tried many changes and still getting same error. Same error also appear while creating channel through terminal using ./peer channel create -o localhost:7050 -c firstchannel -f ./channel.tx
Here is my channel.tx converted in JSON.
How this can be resolved?
I got it worked!
Actually in orderer.yaml, i set LOG to DEBUG and now i can see the problem in channel creation well descriptive.
There were multiple things which i needed to improve but main thing was that in orderer.yaml, GenesisMethod was set to file, so it was creating system channel and was looking the signature of the OrdererMSP admin. Changing GenesisMethod to provisional got channel creation worked.
I use Hyperledger Fabric 1.2 to build a blockchain cluster, which contains 3 peers and 3 orderers. I can successfully deploy and invoke the chaincode via both CLI and Java SDK. Everything works fine. However, when I notice the service discovery function and try to use it, I met two problems. First, after I build the discover tool and try to use it to get some discovered information, I can't access the peer and get the message as follow
"failed connecting to discovery service: failed to create new
connection: context deadline exceeded"
The config command is
discover --configFile conf.yaml --userKey ./crypto-config/peerOrganizations/org1.forchain.com/peers/peer0.org1.forchain.com/msp/keystore/7458b29b1fb6a89768585430dbf0e522a40ff4aefe600fc1e4fafe62c3c972e4_sk --userCert ./crypto-config/peerOrganizations/org1.forchain.com/peers/peer0.org1.forchain.com/msp/signcerts/peer0.org1.forchain.com-cert.pem --MSP Org1MSP saveConfig
The query command is
discover --configFile conf.yaml peers --channel lajiao --server localhost:6051
I guess it may be caused by the TLS config so I canceled the TLS and tried again. This time I successfully access the peer and get some messages, but I met another problem. When I use 'discover peers xxx ' command, I always get null result, in fact there are two peers in that channel. When I use 'discover endorsers xxx' command, I always get the following error message
'failed constructing descriptor for chaincodes:'
In the meantime, the peer log outputs the following message:
'Principal set computation failed: chaincode isn't installed on
sufficient organizations required by the endorsement policy 2018-08-01
10:21:50.860 UTC [discovery] chaincodeQuery -> ERRO 1441 Failed
constructing descriptor for chaincode chaincodes:
,: chaincode isn't installed on sufficient organizations required by
the endorsement policy'
I can assure that the chaincode is successfully installed in all peers. And I didn't use the endorsement policy when I instantiated the chaincode. I think it is not the policy problem because I still can invoke the chaincode and propose a transaction.
I also tried to use the Java SDK and found that I can get the orderer nodes info but I can't get the other peer nodes or chaincode info. The log always output: "Discover of chaincode names was empty.". But the chaincode is definitely instantiated and can be invoke via SDK. I refered to the test code in "org.hyperledger.fabric.sdkintegration.ServiceDiscoveryIT" and some key Java code is as follow:
channel.addPeer(peer, createPeerOptions().setPeerRoles(EnumSet.of(Peer.PeerRole.SERVICE_DISCOVERY,Peer.PeerRole.LEDGER_QUERY, Peer.PeerRole.EVENT_SOURCE,Peer.PeerRole.CHAINCODE_QUERY)));
channel.initialize();
System.out.println("================ orderer ===============");
for (Orderer orderer : channel.getOrderers()) {
System.out.println(orderer.getName());
}
System.out.println("================ peer ===============");
for (Peer p: channel.getPeers()) {
System.out.println(p.getName());
}
System.out.println("================ chaincode ===============");
for (String s: channel.getDiscoveredChaincodeNames()) {
System.out.println(s);
}
So, how can I use the 'discover' command under TLS configuration and how can I get the discovered information?
For the config command - you need to pass a TLS root CA, via --peerTLSCA. Please look at the examples in the documentation and act accordingly.
Now - for the second problem, I think that the peers might not know each other in the channel.
Make sure you have anchor peers defined in the channel and that both peers have external endpoints configured.
Feel free to bug me (yacovm) on chat.hyperledger.org if you're struggling for too long and can't solve the problem.
You must add an anchor peer from each organization in the channel, this solved the problem for me. Anchor peers are required for the service discovery since the service discovery uses gossip protocol- thanks #yacovm
I stumbled a similar error (regarding to service discovery) as below.
Go Fabric Client logs:
Failed to get endorsing peers: error getting channel response for channel [myc]:
Discovery status Code: (11) UNKNOWN. Description: error received from Discovery Server:
failed constructing descriptor for chaincodes:<name:"mycc">
Peer logs:
Failed constructing descriptor for chaincode chaincodes:<name:"mycc" > ,:
cannot satisfy any principal combination
It's fixed when I provide CORE_PEER_GOSSIP_EXTERNALENDPOINT environment attribute with a correct value on peer's configuration (in docker yaml file in my case).
As I understood since this attribute is missing, discovery services running on peers failed to communicate with each other to have a conclusion of what current network looks like.
JIRA issue: https://jira.hyperledger.org/browse/FAB-7420
I'm trying to set up a network of four organisations, each with one peer (set as admin), and an orderer with kafka ordering service along with a client, which makes 7 VMs.
Setting up the cryptographic material, starting every channel (two of them), joining them with the appropriate peers and installing/instantiating chaincode happens with no trouble.
When trying to invoke chaincode, the chaincode can be successfully invoked (status:200) however the results do not seem to be recorded on the ledger. When running chaincode which returns the value for a/multiple key(s), the resulting payload is simply null. This seems to be due to a fault in the ordering service: I get keeping the error message "Error reading from stream: rpc error: code = Canceled desc = context canceled".
Here are logs for the orderer and endorsing peers of the transaction (which returns status:200)
Orderer: https://gist.github.com/alexanderlhicks/91f32fb5ed2b6d5d232dcdad0572ffee
Peer1 (initiating transaction): https://gist.github.com/alexanderlhicks/a2c7a37d3e692336dbc9a8a9f7fd66ba
Peer2 (has the chaincode installed): https://gist.github.com/alexanderlhicks/75c76b11a26963d7a6962f51295ea816
Peer3 (on channel but does not have that chaincode installed): https://gist.github.com/alexanderlhicks/951757e880d8c2f658d2d188e25b9274
What could be causing the "Error reading from stream" message which seems to be the only error happening? I'm tried playing around with peer and orderer configurations but to no avail. Searching for this error also returns issues in channel creation, or joining channels, which I assume has gone fine since I can invoke chaincode on the channels with my peers.
The txid in the logs is 61f54319421bae9c47fab505e502b932ff6c6b58d7d3795afe1400466e663a5d.
Cheers.