web3j multiple transactions per block not possible?

[flefevre]

I have tried to create multiple transactions per block but I am not able to do it.
Let's say I have a contract BCThing with 2 attributes (name and collectorContract).
If I can it once, it works
If I made a loop over 5, it populates in the blockchain only the first one...

Do you have any idea where is my typo or misunderstanding of web3j?
I wanted to create this on stackoverflow but there is no web3j tag.

Admin adminWeb3j = SmartContractUtil.getInstance().getAdminWeb3j();
		Credentials credentials = SmartContractUtil.getInstance().getCredentials();
		BigInteger gasPrice = SmartContractUtil.getInstance().GAS_PRICE;
		BigInteger gasLimit = SmartContractUtil.getInstance().GAS_LIMIT;
		List<Long> thingIds = new ArrayList<Long>();
		for(int i=0; i<3;i++) {
			byte[] _name = SmartContractUtil.getInstance().stringToByte("tot"+((new Date()).getTime()));
			String _COLLECTOR_CONTRACT = "0x3baeb8019a9cc9c488aa9355dc522e023a3b406d";
			CompletableFuture<BCThing> trCommand_future =  BCThing.deploy(adminWeb3j, credentials, gasPrice, gasLimit, _name, _COLLECTOR_CONTRACT).sendAsync();
			trCommand_future.thenAccept(trCommand -> {
				try {
					System.out.println("trCommand.getContractAddress="+((BCThing)trCommand_future.get()).name()+"\t"+trCommand.getContractAddress()+"\t"+((BCThing)trCommand_future.get()).COLLECTOR_CONTRACT().send());
				} catch (InterruptedException | ExecutionException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (Exception e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			});
		}

Thanks for your help.

[flefevre]

To help, I have switch to the example defined in web3j test, the one with SimpleStorage.
I am trying to deploy it manually 3 times: one with send, then with sendAsync and then sendAsync.
The first one works perfectly
The secund one also
But I never get the last one...

I hope it will help the team to tell me where is the mistake.

TRACE

1535381054639 0Deploy first time with send:
1535381069679 A:0x9f3821955fe7a3aa4454748f11825ee3364677de
1535381069679 Deploy secund time with sendAsync
1535381069682 Deploy third time with sendAsync
1535381069684 Waiting
1535381084708 B:0xe5219f881272657f78c3b011ad9bf6a421204a3c
1535381069684 End

CODE

Date start = new Date();
		SimpleStorage x=null;
		try {
			System.out.println(start.getTime()+"\tDeploy first time with send: ");
			x = SimpleStorage.deploy(web3, credentials2, gasPrice, gasLimit).send();
		} catch (Exception e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
		Date done = new Date();
		System.out.println(done.getTime()+"\tA:"+x.getContractAddress());
		
		System.out.println(done.getTime()+"\tDeploy secund time with sendAsync");
		CompletableFuture<SimpleStorage> b = SimpleStorage.deploy(web3, credentials2, gasPrice, gasLimit).sendAsync();
		b.thenAccept(trCommand -> {
			try {
				Date doneB = new Date();
				System.out.println(doneB.getTime()+"\tB:"+b.get().getContractAddress());
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (ExecutionException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		});
		Date done3 = new Date();
		System.out.println(done3.getTime()+"\tDeploy third time with sendAsync");
		CompletableFuture<SimpleStorage> c = SimpleStorage.deploy(web3, credentials2, gasPrice, gasLimit).sendAsync();
		c.thenAccept(trCommand -> {
			try {
				Date doneC = new Date();
				System.out.println(doneC.getTime()+"\tC:"+c.get().getContractAddress());
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (ExecutionException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		});
		Date done4 = new Date();
		System.out.println(done4.getTime()+"\tWaiting");
		try {
			TimeUnit.SECONDS.sleep(120);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		Date done5 = new Date();
		System.out.println(done4.getTime()+"\tEnd");

[flefevre]

Dear all,
I have created a small github project with a minimal configuration 1 with the web3j SampleStorage solidity smart contract.
By launching it, you will be able to view:

-my difficulty perhaps to give the right parameters for a private ethereum netrwork

but also a difficulty to use multiple transaction with several instances of the same smart contract.

'''
java.util.concurrent.ExecutionException: java.lang.RuntimeException: java.lang.RuntimeException: Error processing transaction request: replacement transaction underpriced
ending at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895)
'''

• and also a potential bug with FastRawTransactionManager
  '''
  fastRawTxMgr.getCurrentNonce()=-1
  java.lang.RuntimeException: java.lang.NoSuchMethodException: org.github.web3j.web3jmultipletxsmartcontract.SimpleStorage.(java.lang.String, org.web3j.protocol.Web3j, org.web3j.tx.TransactionManager, org.web3j.tx.gas.ContractGasProvider)
  at org.web3j.tx.Contract.deploy(Contract.java:375)
  at org.web3j.tx.Contract.lambda$deployRemoteCall$6(Contract.java:404)
  at org.web3j.protocol.core.RemoteCall.send(RemoteCall.java:30)
  at org.github.web3j.web3jmultipletxsmartcontract.MultipleCreationFastTransactionManager.main(MultipleCreationFastTransactionManager.java:61)
  Caused by: java.lang.NoSuchMethodException: org.github.web3j.web3jmultipletxsmartcontract.SimpleStorage.(java.lang.String, org.web3j.protocol.Web3j, org.web3j.tx.TransactionManager, org.web3j.tx.gas.ContractGasProvider)
  at java.lang.Class.getConstructor0(Class.java:3082)
  at java.lang.Class.getDeclaredConstructor(Class.java:2178)
  at org.web3j.tx.Contract.deploy(Contract.java:362)
  ... 3 more
  Contract is null
  '''

I hope this will help you.

[flefevre]

The github repository:
'''
git clone https://github.com/flefevre/web3jmultipletx
cd web3jmultipletx
mvn clean install -f web3jmultipletxsmartcontract/pom.xml
'''

look at the readme

[flefevre]

We Can close this sincère i have described it more clearly here

FastRawTransactionManager is not able to deploy smartcontract #688