Command-Line Interface (CLI)
Smart Contracts & Junod Development
Execute commands
Now we complete the task - sending some tokens that have been delegated to a key
Running commands
As mentioned in the introduction, now we want to:
- 1.As the admin key (A)†, set an allowance for a key (B)
- 2.As the key with an allowance, send tokens from key (B) to key (C)
- 3.See tokens arrive at key (C)
- 4.See allowance decrease for key (B)
† this is the key that you used to instantiate, and set as an admin. If you are running a validator in the testnet, then it is probably your self-delegate key.
1. Add allowance for key B
Using
node, you can again encode the following arguments:1
{
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increase_allowance: {
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spender: '<key-B>',
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amount: {
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denom: "ujuno",
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amount: "2000000"
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}
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}
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}
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Then, as the admin key (A), increase key (B)'s allowance:
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junod tx wasm execute <contract-addr> \
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'{"increase_allowance":{"spender":"<key-B>","amount":{"denom":"ujunox","amount":"2000000"}}}' \
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--from <admin-key-A> \
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--chain-id <chain-id> \
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--gas-prices 0.1ujunox --gas auto --gas-adjustment 1.3 -b block
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If you query its allowance, you should see a value of
2000000:1
junod query wasm contract-state smart <contract-addr> '{"allowance":{"spender":"<key-B>"}}' --chain-id <chain-id>
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Should return:
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data:
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balance:
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- amount: "2000000"
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denom: ujunox
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expires:
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never: {}
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2. Send tokens from key B to key C
First, query the balance of another key, that we did not allocate any tokens to (C):
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junod q bank balances <key-C>
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Let's say it already has a balance of
500ujuno - the command will return:1
balances:
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- amount: "500"
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denom: ujunox
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pagination:
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next_key: null
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total: "0"
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Then, we again need to encode some arguments to JSON for the send:
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{
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execute: {
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msgs: [{
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bank: {
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send: {
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to_address: "<key-C>",
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amount: [{
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denom: "ujunox",
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amount: "500"
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}]
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}
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}
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}]
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}
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};
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Once we have the JSON, we can shape an
execute command:1
junod tx wasm execute <contract-addr> \
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'{"execute":{"msgs":[{"bank":{"send":{"to_address":"<key-C>","amount":[{"denom":"ujunox","amount":"500"}]}}}]}}' \
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--from <key-B> \
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--chain-id <chain-id> \
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--gas-prices 0.1ujunox --gas auto --gas-adjustment 1.3 -b block
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Note that the
--from flag is now signing this from the key (B) that the admin key (A) gave a token balance to. This CW1 Subkeys contract will only work with the native token of the chain, in this case ujuno.3. Check balance of key C
If we query balance again:
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junod q bank balances <key-C>
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We expect to see the balance incremented by
500ujuno:1
balances:
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- amount: "1000"
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denom: ujunox
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pagination:
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next_key: null
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total: "0"
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4. See allowance decrease for key B
Now, if we query the allowance for key B, we should see it has decreased by
500ujuno:1
junod query wasm contract-state smart <contract-addr> '{"allowance":{"spender":"<key-B>"}}' --chain-id <chain-id>
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data:
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balance:
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- amount: "1999500"
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denom: ujunox
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expires:
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never: {}
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We're done!
Play around some more with increasing and decreasing allowances, or even adding expiries to allowances, to get a better feel for how this works.
Last modified 1mo ago