Sdk

Using Solo with Hedera JavaScript SDK

⚠️ Warning This document is out of date for the current release. See Step-by-step Guide for the updated base commands to run that can be augmented with the extra flags and values provided in this guide. Hedera services and Platform SDK have moved to hiero-consensus-node repo https://github.com/hiero-ledger/hiero-consensus-node

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
task default-with-mirror

Then create a new test account with the following command:

npm run solo-test -- account create -n solo-e2e --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 commmand to get private key of the account 0.0.1007:

 npm run solo-test -- account get --account-id 0.0.1007 -n solo-e2e --private-key

The output would be similar to the following:

{
 "accountId": "0.0.1007",
 "privateKey": "302e020100300506032b657004220420cfea706dd9ed2d3c1660ba98acf4fdb74d247cce289ef6ef47486e055e0b9508",
 "publicKey": "302a300506032b65700321001d8978e647aca1195c54a4d3d5dc469b95666de14e9b6edde8ed337917b96013",
 "balance": 100
}

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

# Hedera Operator Account ID
OPERATOR_ID="0.0.1007"

# Hedera Operator Private Key
OPERATOR_KEY="302a300506032b65700321001d8978e647aca1195c54a4d3d5dc469b95666de14e9b6edde8ed337917b96013"

# Hedera Network
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 Hedera 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.