This is a go layer on top of the Harmony RPC, included is a CLI tool that you can build with a
simple invocation of make
See https://docs.harmony.one/home/network/wallets/harmony-cli/download-setup for detailed
documentation on how to use the hmy CLI tools
Working directly on this repo can be challenging because of the upstream dependencies. Follow the README in the main repo for an already ready development environment: https://github.com/harmony-one/harmony/blob/master/README.md.
...for the impatient:
$ docker run -it harmonyone/main:stable /bin/bash
$ cd ../go-sdk
$ git pull -r origin master
$ make
hmy implements a fluent API, that is, there is a hierarchy of commands.
once built, add hmy to your path and add to your .bashrc
. <(hmy completion)
invoke the following command to see the most command usages of hmy
$ hmy cookbook
Cookbook of Usage
Note:
1) Every subcommand recognizes a '--help' flag
2) If a passphrase is used by a subcommand, one can enter their own passphrase interactively
with the --passphrase option. Alternatively, one can pass their own passphrase via a file
using the --passphrase-file option. If no passphrase option is selected, the default
passphrase of '' is used.
3) These examples use Shard 0 of Mainnet as argument for --node
Examples:
1. Check account balance on given chain
./hmy --node=https://api.s0.t.hmny.io balances <SOME_ONE_ADDRESS>
2. Check sent transaction
./hmy --node=https://api.s0.t.hmny.io blockchain transaction-by-hash <SOME_TX_HASH>
3. List local account keys
./hmy keys list
4. Sending a transaction (waits 40 seconds for transaction confirmation)
./hmy --node=https://api.s0.t.hmny.io transfer \
--from <SOME_ONE_ADDRESS> --to <SOME_ONE_ADDRESS> \
--from-shard 0 --to-shard 1 --amount 200 --passphrase
5. Sending a batch of transactions as dictated from a file (the `--dry-run` options still apply)
./hmy --node=https://api.s0.t.hmny.io transfer --file <PATH_TO_JSON_FILE>
Check README for details on json file format.
6. Check a completed transaction receipt
./hmy --node=https://api.s0.t.hmny.io blockchain transaction-receipt <SOME_TX_HASH>
7. Import an account using the mnemonic. Prompts the user to give the mnemonic.
./hmy keys recover-from-mnemonic <ACCOUNT_NAME>
8. Import an existing keystore file
./hmy keys import-ks <PATH_TO_KEYSTORE_JSON>
9. Import a keystore file using a secp256k1 private key
./hmy keys import-private-key <secp256k1_PRIVATE_KEY>
10. Export a keystore file's secp256k1 private key
./hmy keys export-private-key <ACCOUNT_ADDRESS> --passphrase
11. Generate a BLS key then encrypt and save the private key to the specified location.
./hmy keys generate-bls-key --bls-file-path <PATH_FOR_BLS_KEY_FILE>
12. Create a new validator with a list of BLS keys
./hmy --node=https://api.s0.t.hmny.io staking create-validator --amount 10 --validator-addr <SOME_ONE_ADDRESS> \
--bls-pubkeys <BLS_KEY_1>,<BLS_KEY_2>,<BLS_KEY_3> \
--identity foo --details bar --name baz --max-change-rate 0.1 --max-rate 0.1 --max-total-delegation 10 \
--min-self-delegation 10 --rate 0.1 --security-contact Leo --website harmony.one --passphrase
13. Edit an existing validator
./hmy --node=https://api.s0.t.hmny.io staking edit-validator \
--validator-addr <SOME_ONE_ADDRESS> --identity foo --details bar \
--name baz --security-contact EK --website harmony.one \
--min-self-delegation 0 --max-total-delegation 10 --rate 0.1\
--add-bls-key <SOME_BLS_KEY> --remove-bls-key <OTHER_BLS_KEY> --passphrase
14. Delegate an amount to a validator
./hmy --node=https://api.s0.t.hmny.io staking delegate \
--delegator-addr <SOME_ONE_ADDRESS> --validator-addr <VALIDATOR_ONE_ADDRESS> \
--amount 10 --passphrase
15. Undelegate to a validator
./hmy --node=https://api.s0.t.hmny.io staking undelegate \
--delegator-addr <SOME_ONE_ADDRESS> --validator-addr <VALIDATOR_ONE_ADDRESS> \
--amount 10 --passphrase
16. Collect block rewards as a delegator
./hmy --node=https://api.s0.t.hmny.io staking collect-rewards \
--delegator-addr <SOME_ONE_ADDRESS> --passphrase
17. Check elected validators
./hmy --node=https://api.s0.t.hmny.io blockchain validator elected
18. Get current staking utility metrics
./hmy --node=https://api.s0.t.hmny.io blockchain utility-metrics
19. Check in-memory record of failed staking transactions
./hmy --node=https://api.s0.t.hmny.io failures staking
20. Check which shard your BLS public key would be assigned to as a validator
./hmy --node=https://api.s0.t.hmny.io utility shard-for-bls <BLS_PUBLIC_KEY>
21. Vote on a governance proposal on https://snapshot.org
./hmy governance vote-proposal --space=[harmony-mainnet.eth] \
--proposal=<PROPOSAL_IPFS_HASH> --proposal-type=[single-choice] \
--choice=<VOTING_CHOICE(S)> --app=[APP] --key=<ACCOUNT_ADDRESS_OR_NAME>
PS: key must first use (hmy keys import-private-key) to import
22. Enter Console
./hmy command --net=testnet
One may find it useful to send a batch of transaction with 1 instance of the binary.
To do this, one can specify a JSON file with the transaction subcommand to dictate a batch of transaction to send
off in sequential order.
Example:
hmy --node="https://api.s1.t.hmny.io/" transfer --file ./batchTransactions.json
Note that the
--wait-for-confirmand--dry-runoptions still apply when sending batched transactions
The JSON file will be a JSON array where each element has the following attributes:
| Key | Value-type | Value-description |
|---|---|---|
from |
string | [Required] Sender's one address, must have key in keystore. |
to |
string | [Required] The receivers one address. |
amount |
string | [Required] The amount to send in $ONE. |
from-shard |
string | [Required] The source shard. |
to-shard |
string | [Required] The destination shard. |
passphrase-file |
string | [Optional] The file path to file containing the passphrase in plain text. If none is provided, check for passphrase string. |
passphrase-string |
string | [Optional] The passphrase as a string in plain text. If none is provided, passphrase is ''. |
nonce |
string | [Optional] The nonce of a specific transaction, default uses nonce from blockchain. |
gas-price |
string | [Optional] The gas price to pay in NANO (1e-9 of $ONE), default is 1. |
gas-limit |
string | [Optional] The gas limit, default is 21000. |
stop-on-error |
boolean | [Optional] If true, stop sending transactions if an error occurred, default is false. |
true-nonce |
boolean | [Optional] If true, send transaction using true on-chain nonce. Cannot be used with nonce. If none is provided, use tx pool nonce. |
Example of JSON file:
[
{
"from": "one103q7qe5t2505lypvltkqtddaef5tzfxwsse4z7",
"to": "one1zksj3evekayy90xt4psrz8h6j2v3hla4qwz4ur",
"from-shard" : "0",
"to-shard": "0",
"amount": "1",
"passphrase-string": "",
"nonce": "35",
"stop-on-error": true
},
{
"from": "one103q7qe5t2505lypvltkqtddaef5tzfxwsse4z7",
"to": "one1zksj3evekayy90xt4psrz8h6j2v3hla4qwz4ur",
"from-shard" : "0",
"to-shard": "0",
"amount": "1",
"passphrase-file": "./pw.txt",
"gas-price": "1",
"gas-limit": "21000",
"true-nonce": true
}
]The return will be a JSON array where each element is a transaction log. The transaction log has the following attributes:
| Key | Value-type | Value-description |
|---|---|---|
transaction-receipt |
string | The transaction hash/receipt if the CLI signed and sent a transaction, otherwise this key will not exist |
transaction |
JSON Object | The transaction parameters if --dry-run is toggled, otherwise this key will not exist. |
blockchain-receipt |
JSON Object | The transaction receipt from the blockchain if wait-for-confirm is > 0, otherwise this key will not exist. |
raw-transaction |
string | The raw bytes in hex of a sighed transaction if --dry-run is toggled, otherwise this key will not exist |
errors |
JSON Array | A JSON array of strings describing any error that occurred during the execution of a transaction. If no errors, this key will not exist. |
time-signed-utc |
string | The time in UTC as a string of roughly when the transaction was signed. If no signed transaction, this key will not exist. |
Example of returned JSON Array:
[
{
"errors": [
"[2020-01-22 22:01:10.819406] strconv.ParseUint: parsing \"-1\": invalid syntax"
]
},
{
"transaction-receipt": "0xf1706080ea9ac210ee2c12c69fb310be5a5da99582b7c783e2f741a3536abbfd",
"blockchain-receipt": {
"blockHash": "0xe6de09f4e0ca351257d301a50b4e2ca82646473dc1c4302b570bfab17d421850",
"blockNumber": "0xb71",
"contractAddress": null,
"cumulativeGasUsed": "0x5208",
"from": "one103q7qe5t2505lypvltkqtddaef5tzfxwsse4z7",
"gasUsed": "0x5208",
"logs": [],
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
"shardID": 0,
"status": "0x1",
"to": "one1zksj3evekayy90xt4psrz8h6j2v3hla4qwz4ur",
"transactionHash": "0xf1706080ea9ac210ee2c12c69fb310be5a5da99582b7c783e2f741a3536abbfd",
"transactionIndex": "0x0"
},
"time-signed-utc": "2020-01-22 22:01:11.468407"
}
]- Get Nonce From a Account. (Need to be online, but no passphrase required)
./hmy get-nonce --node=https://api.s0.t.hmny.io --from=[ONE address]- Sign transfer and write to file. (Passphrase required, But no need to be online)
./hmy transfer --offline-sign --nonce=[nonce value from previous] --from=[ONE address] --to=[ONE address] --amount=1000 --from-shard=0 --to-shard=0 > signed.json- send
signed.jsonto Harmony blockchain! (Need to be online, but no passphrase required)
./hmy offline-sign-transfer --node=https://api.s0.b.hmny.io --file ./signed.jsonThe go-sdk code respects HMY_RPC_DEBUG HMY_TX_DEBUG as debugging
based environment variables.
HMY_RPC_DEBUG=true HMY_TX_DEBUG=true ./hmy blockchain protocol-versionYou can deploy the contract use the command;
./hmy command --node="https://api.s0.b.hmny.io" --net=testnetThen you can test this code to deploy a smart contract
var abi = [{"constant":false,"inputs":[],"name":"changeIt","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"number","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"}]
var code = '0x60806040526212345660005534801561001757600080fd5b5060c8806100266000396000f3006080604052600436106049576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff16806327b5c17514604e5780638381f58a146062575b600080fd5b348015605957600080fd5b506060608a565b005b348015606d57600080fd5b5060746096565b6040518082815260200191505060405180910390f35b62654321600081905550565b600054815600a165627a7a72305820294db9eed647c48762212fd43bf9ed7733c9d9f43b1ce5583bb4c2bae97fae770029'
var account = 'one1xjanr7lgulc0fqyc8dmfp6jfwuje2d94xfnzyd' // change this to your account address, support eth or one address
var myContract=eth.contract(abi)
contract = myContract.new({from:account,data:code})Wait for a few seconds and it's ready to use
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