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Fix fee conversion to sats

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This commit is contained in:
Ross Savage
2023-07-13 22:59:57 +02:00
parent 4cbe04da8b
commit 83a1eab7e6
1 changed files with 24 additions and 22 deletions
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46
src/guide/receive_onchain.md
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@@ -331,7 +331,7 @@ async fn calculate_fees_for_amount(amount_msat: u64) -> Result<u64> {
let fee_sat = max( let fee_sat = max(
lsp_info.channel_minimum_fee_msat as u64, lsp_info.channel_minimum_fee_msat as u64,
channel_dynamic_fee_msat, channel_dynamic_fee_msat,
); ) / 1000;
Ok(fee_sat) Ok(fee_sat)
} }
``` ```
@@ -383,12 +383,12 @@ func calculateFeesForAmount(amountMsats: Int64) -> Int64? {
// We calculate the dynamic fees in millisatoshis rounded to satoshis. // We calculate the dynamic fees in millisatoshis rounded to satoshis.
let channelDynamicFeeMsat = amountMsats * lspInfo!.channelFeePermyriad / 10_000 / 1000 * 1000 let channelDynamicFeeMsat = amountMsats * lspInfo!.channelFeePermyriad / 10_000 / 1000 * 1000
let feeSat = max(lspInfo!.channelMinimumFeeMsat,channelDynamicFeeMsat) let feeSat = max(lspInfo!.channelMinimumFeeMsat, channelDynamicFeeMsat) / 1000
return feeSat return feeSat
} }
} catch { } catch {
// Handle error // Handle error
} }
return nil return nil
} }
@@ -432,7 +432,7 @@ int calculateFeesForAmount(int amountMsat) async {
// We calculate the dynamic fees in millisatoshis rounded to satoshis. // We calculate the dynamic fees in millisatoshis rounded to satoshis.
int channelFeesMsat = (amountMsat * lspInformation.channelFeePermyriad / 10000 / 1000 * 1000); int channelFeesMsat = (amountMsat * lspInformation.channelFeePermyriad / 10000 / 1000 * 1000);
return max(channelFeesMsat, lspInformation.channelMinimumFeeMsat); return max(channelFeesMsat, lspInformation.channelMinimumFeeMsat) / 1000;
} }
``` ```
</section> </section>
@@ -475,7 +475,7 @@ def calculate_fees_for_amount(amount_msats):
# We calculate the dynamic fees in millisatoshis rounded to satoshis. # We calculate the dynamic fees in millisatoshis rounded to satoshis.
channel_dynamic_fee = amount_msats * lsp_info.channel_minimum_fee_msat * lsp_info.channel_fee_permyriad / 10000 // 10000 * 10000 channel_dynamic_fee = amount_msats * lsp_info.channel_minimum_fee_msat * lsp_info.channel_fee_permyriad / 10000 // 10000 * 10000
fee_sat = max(lsp_info.channel_minimum_fee_msat, channel_dynamic_fee) fee_sat = max(lsp_info.channel_minimum_fee_msat, channel_dynamic_fee) / 1000
return fee_sat return fee_sat
``` ```
@@ -515,24 +515,26 @@ This information can be retrieved for each LSP and then calculated:
```go ```go
func calculateFeesForAmount(amountMsats uint64) uint64 { func calculateFeesForAmount(amountMsats uint64) uint64 {
lspId, err := sdkServices.LspId() lspId, err := sdkServices.LspId()
if err != nil { if err != nil {
log.Printf("received error %#v", err) // Handle error
} }
lspInfo, err := sdkServices.FetchLspInfo(*lspId)
if err != nil {
log.Printf("received error %#v", err)
}
// We calculate the dynamic fees in millisatoshis rounded to satoshis
channelDynamicFeeMSat := amountMsats * uint64(lspInfo.ChannelFeePermyriad) / 10000 / 1000 * 1000
var feeSat uint64 lspInfo, err := sdkServices.FetchLspInfo(*lspId)
if channelDynamicFeeMSat >= uint64(lspInfo.ChannelMinimumFeeMsat) { if err != nil {
feeSat = channelDynamicFeeMSat // Handle error
} else { }
feeSat = uint64(lspInfo.ChannelMinimumFeeMsat)
} // We calculate the dynamic fees in millisatoshis rounded to satoshis
return uint64(feeSat) channelDynamicFeeMsats := amountMsats * uint64(lspInfo.ChannelFeePermyriad) / 10000 / 1000 * 1000
feeMsats := uint64(lspInfo.ChannelMinimumFeeMsat)
if channelDynamicFeeMsats >= feeMsats {
feeMsats = channelDynamicFeeMsats
}
// Fee sats
return feeMsats / 1000
} }
``` ```