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USD-based pricing of gas.

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This commit is contained in:
Gav Wood 2016-03-28 00:49:35 +02:00
parent 6b8e7bdfb3
commit b606fb68cf
4 changed files with 168 additions and 8 deletions
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90
Cargo.lock generated
View File

@ -14,6 +14,7 @@ dependencies = [
"ethminer 1.1.0",
"ethsync 1.1.0",
"fdlimit 0.1.0",
"hyper 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
"log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
"num_cpus 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
"number_prefix 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
@ -65,6 +66,11 @@ name = "bitflags"
version = "0.3.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "bitflags"
version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "bitflags"
version = "0.5.0"
@ -119,6 +125,8 @@ name = "cookie"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"openssl 0.7.8 (registry+https://github.com/rust-lang/crates.io-index)",
"rustc-serialize 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
"time 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
"url 0.5.7 (registry+https://github.com/rust-lang/crates.io-index)",
]
@ -342,6 +350,14 @@ name = "gcc"
version = "0.3.25"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "gdi32-sys"
version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "glob"
version = "0.2.11"
@ -404,6 +420,7 @@ dependencies = [
"log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
"mime 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
"num_cpus 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
"openssl 0.7.8 (registry+https://github.com/rust-lang/crates.io-index)",
"rustc-serialize 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
"solicit 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
"time 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
@ -493,6 +510,14 @@ name = "libc"
version = "0.2.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "libressl-pnacl-sys"
version = "2.1.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"pnacl-build-helper 1.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "librocksdb-sys"
version = "0.2.3"
@ -630,6 +655,54 @@ name = "odds"
version = "0.2.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "openssl"
version = "0.7.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"bitflags 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
"gcc 0.3.25 (registry+https://github.com/rust-lang/crates.io-index)",
"lazy_static 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
"openssl-sys 0.7.8 (registry+https://github.com/rust-lang/crates.io-index)",
"openssl-sys-extras 0.7.8 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "openssl-sys"
version = "0.7.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"gdi32-sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
"libressl-pnacl-sys 2.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
"pkg-config 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
"user32-sys 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "openssl-sys-extras"
version = "0.7.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"gcc 0.3.25 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
"openssl-sys 0.7.8 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "pkg-config"
version = "0.3.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "pnacl-build-helper"
version = "1.4.10"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"tempdir 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "primal"
version = "0.2.3"
@ -867,6 +940,14 @@ name = "target_info"
version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "tempdir"
version = "0.3.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "term"
version = "0.2.14"
@ -973,6 +1054,15 @@ dependencies = [
"uuid 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "user32-sys"
version = "0.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
"winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "utf8-ranges"
version = "0.1.3"

1
Cargo.toml
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@ -28,6 +28,7 @@ ethsync = { path = "sync" }
ethminer = { path = "miner" }
ethcore-devtools = { path = "devtools" }
ethcore-rpc = { path = "rpc", optional = true }
hyper = "0.8"
[features]
default = ["rpc"]

46
parity/main.rs
View File

@ -36,6 +36,9 @@ extern crate time;
extern crate number_prefix;
extern crate rpassword;
// for price_info.rs
#[macro_use] extern crate hyper;
#[cfg(feature = "rpc")]
extern crate ethcore_rpc as rpc;
@ -60,6 +63,8 @@ use docopt::Docopt;
use daemonize::Daemonize;
use number_prefix::{binary_prefix, Standalone, Prefixed};
mod price_info;
fn die_with_message(msg: &str) -> ! {
println!("ERROR: {}", msg);
exit(1);
@ -126,8 +131,11 @@ API and Console Options:
[default: web3,eth,net,personal].
Sealing/Mining Options:
--gas-price WEI Minimum amount of Wei to be paid for a transaction
to be accepted for mining [default: 20000000000].
--usd-per-tx USD Amount of USD to be paid for a basic transaction
[default: 0.005]. The minimum gas price is set
accordingly.
--usd-per-eth SOURCE USD value of a single ETH. SOURCE may be either an
amount in USD or a web service [default: etherscan].
--gas-floor-target GAS Amount of gas per block to target when sealing a new
block [default: 4712388].
--author ADDRESS Specify the block author (aka "coinbase") address
@ -162,7 +170,9 @@ Geth-compatibility Options:
--rpcport PORT Equivalent to --jsonrpc-port PORT.
--rpcapi APIS Equivalent to --jsonrpc-apis APIS.
--rpccorsdomain URL Equivalent to --jsonrpc-cors URL.
--gasprice WEI Equivalent to --gas-price WEI.
--gasprice WEI Minimum amount of Wei per GAS to be paid for a
transaction to be accepted for mining. Overrides
--basic-tx-usd.
--etherbase ADDRESS Equivalent to --author ADDRESS.
--extradata STRING Equivalent to --extra-data STRING.
@ -204,7 +214,8 @@ struct Args {
flag_jsonrpc_cors: String,
flag_jsonrpc_apis: String,
flag_author: String,
flag_gas_price: String,
flag_usd_per_tx: String,
flag_usd_per_eth: String,
flag_gas_floor_target: String,
flag_extra_data: Option<String>,
flag_logging: Option<String>,
@ -339,10 +350,29 @@ impl Configuration {
}
fn gas_price(&self) -> U256 {
let d = self.args.flag_gasprice.as_ref().unwrap_or(&self.args.flag_gas_price);
U256::from_dec_str(d).unwrap_or_else(|_| {
die!("{}: Invalid gas price given. Must be a decimal unsigned 256-bit number.", d)
})
match self.args.flag_gasprice.as_ref() {
Some(d) => {
U256::from_dec_str(d).unwrap_or_else(|_| {
die!("{}: Invalid gas price given. Must be a decimal unsigned 256-bit number.", d)
})
}
_ => {
let usd_per_tx: f32 = FromStr::from_str(&self.args.flag_usd_per_tx).unwrap_or_else(|_| {
die!("{}: Invalid basic transaction price given in USD. Must be a decimal number.", self.args.flag_usd_per_tx)
});
let usd_per_eth = match self.args.flag_usd_per_eth.as_str() {
"etherscan" => price_info::PriceInfo::get().map(|x| x.ethusd).unwrap_or_else(|| {
die!("Unable to retrieve USD value of ETH from etherscan. Rerun with a different value for --usd-per-eth.")
}),
x => FromStr::from_str(x).unwrap_or_else(|_| die!("{}: Invalid ether price given in USD. Must be a decimal number.", x))
};
let wei_per_usd: f32 = 1.0e18 / usd_per_eth;
let gas_per_tx: f32 = 21000.0;
let wei_per_gas: f32 = wei_per_usd * usd_per_tx / gas_per_tx;
info!("Using a conversion rate of Ξ1 = US${} ({} wei/gas)", usd_per_eth, wei_per_gas);
U256::from_dec_str(&format!("{:.0}", wei_per_gas)).unwrap()
}
}
}
fn extra_data(&self) -> Bytes {

39
parity/price_info.rs Normal file
View File

@ -0,0 +1,39 @@
use rustc_serialize::json::Json;
use std::io::Read;
use hyper::Client;
use hyper::header::Connection;
use std::str::FromStr;
pub struct PriceInfo {
pub ethusd: f32,
}
impl PriceInfo {
pub fn get() -> Option<PriceInfo> {
let mut body = String::new();
// TODO: actually bother dicking around with the errors and make it proper.
match match match Client::new()
.get("http://api.etherscan.io/api?module=stats&action=ethprice")
.header(Connection::close())
.send() {
Err(_) => { return None; },
Ok(mut s) => s.read_to_string(&mut body),
} {
Err(_) => { return None; },
_ => { Json::from_str(&body) }
} {
Err(_) => { return None; },
Ok(json) => {
let ethusd: f32 = if let Some(&Json::String(ref s)) = json.find_path(&["result", "ethusd"]) {
FromStr::from_str(&s).unwrap()
} else {
return None;
};
Some(PriceInfo {
ethusd: ethusd,
})
}
}
}
}