Using Solo with Hiero JavaScript SDK

Using Solo with the Hiero JavaScript SDK

First, please follow solo repository README to install solo and Docker Desktop. You also need to install the Taskfile tool following the instructions here.

Then we start with launching a local Solo network with the following commands:

# launch a local Solo network with mirror node and hedera explorer
cd examples
task default-with-mirror

Then create a new test account with the following command:

npm run solo-test -- account create --deployment solo-deployment --hbar-amount 100

The output would be similar to the following:

 *** new account created ***
-------------------------------------------------------------------------------
{
 "accountId": "0.0.1007",
 "publicKey": "302a300506032b65700321001d8978e647aca1195c54a4d3d5dc469b95666de14e9b6edde8ed337917b96013",
 "balance": 100
}

Then use the following command to get private key of the account 0.0.1007:

 npm run solo-test -- account get --account-id 0.0.1007 --deployment solo-deployment --private-key

The output would be similar to the following:

{
 "accountId": "0.0.1007",
 "privateKey": "302e020100300506032b657004220420411a561013bceabb8cb83e3dc5558d052b9bd6a8977b5a7348bf9653034a29d7",
 "privateKeyRaw": "411a561013bceabb8cb83e3dc5558d052b9bd6a8977b5a7348bf9653034a29d7"
 "publicKey": "302a300506032b65700321001d8978e647aca1195c54a4d3d5dc469b95666de14e9b6edde8ed337917b96013",
 "balance": 100
}

Next step please clone the Hiero Javascript SDK repository https://github.com/hiero-ledger/hiero-sdk-js. At the root of the project hiero-sdk-js, create a file .env and add the following content:

# Hiero Operator Account ID
export OPERATOR_ID="0.0.1007"

# Hiero Operator Private Key
export OPERATOR_KEY="302a300506032b65700321001d8978e647aca1195c54a4d3d5dc469b95666de14e9b6edde8ed337917b96013"

# Hiero Network
export HEDERA_NETWORK="local-node"

Make sure to assign the value of accountId to OPERATOR_ID and the value of privateKey to OPERATOR_KEY.

Then try the following command to run the test

node examples/create-account.js 

The output should be similar to the following:

private key = 302e020100300506032b6570042204208a3c1093c4df779c4aa980d20731899e0b509c7a55733beac41857a9dd3f1193
public key = 302a300506032b6570032100c55adafae7e85608ea893d0e2c77e2dae3df90ba8ee7af2f16a023ba2258c143
account id = 0.0.1009

Or try the topic creation example:

node examples/create-topic.js

The output should be similar to the following:

topic id = 0.0.1008
topic sequence number = 1

You can use Hiero Explorer to check transactions and topics created in the Solo network: http://localhost:8080/localnet/dashboard

Finally, after done with using solo, using the following command to tear down the Solo network:

task clean

Retrieving Logs

You can find log for running solo command under the directory ~/.solo/logs/

The file solo.log contains the logs for the solo command. The file hashgraph-sdk.log contains the logs from Solo client when sending transactions to network nodes.