Monitor WETH balance on Solana (via Native program)
In the wormhole example, one can also monitor SPL token program.
First, import your builtin SPL token processor
import { SPLTokenProcessor } from '@sentio/sdk/solana/builtin'
Then we trigger user written callback on both Mint
and Burn
instructions (Both are standard in SPL program). The code is as follows
SPLTokenProcessor.bind({
address: 'wormDTUJ6AWPNvk59vGQbDvGJmqbDTdgWgAqcLBCgUb',
})
.onMintTo((data, ctx) => {
if (data.mint === '7vfCXTUXx5WJV5JADk17DUJ4ksgau7utNKj4b963voxs') {
ctx.meter.Counter('totalWeth_supply').add(data.amount as number)
}
})
.onBurn((data, ctx) => {
if (data.mint === '7vfCXTUXx5WJV5JADk17DUJ4ksgau7utNKj4b963voxs') {
ctx.meter.Counter('totalWeth_supply').sub(data.amount as number)
}
})
.innerInstruction(true)
You could see the metrics are submitted using ctx.meter.Counter
See this repo for full implementation. To learn how to view metrics from the UI, go to view-metrics
Updated about 24 hours ago