Dual license under MIT/Apache 2 (#28)
* fix: dual license MIT / Apache 2 * provider: add missing license
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Copyright (c) 2020 Georgios Konstantopoulos
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Apache License
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Version 2.0, January 2004
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http://www.apache.org/licenses/
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TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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APPENDIX: How to apply the Apache License to your work.
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Copyright [yyyy] [name of copyright owner]
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@ -0,0 +1,25 @@
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Copyright (c) 2020 Georgios Konstantopoulos
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Permission is hereby granted, free of charge, to any
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person obtaining a copy of this software and associated
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documentation files (the "Software"), to deal in the
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Software without restriction, including without
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limitation the rights to use, copy, modify, merge,
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publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software
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is furnished to do so, subject to the following
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conditions:
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The above copyright notice and this permission notice
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shall be included in all copies or substantial portions
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of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
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ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
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IN CONNECTION WITH THE SOFTWARE O THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.R
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@ -1,5 +1,6 @@
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[package]
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[package]
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name = "ethers-contract"
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name = "ethers-contract"
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license = "MIT OR Apache-2.0"
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version = "0.1.0"
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version = "0.1.0"
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authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
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authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
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edition = "2018"
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edition = "2018"
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@ -1,5 +1,6 @@
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[package]
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[package]
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name = "ethers-core"
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name = "ethers-core"
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license = "MIT OR Apache-2.0"
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version = "0.1.0"
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version = "0.1.0"
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authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
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authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
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edition = "2018"
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edition = "2018"
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@ -1,5 +1,6 @@
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[package]
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[package]
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name = "ethers-providers"
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name = "ethers-providers"
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license = "MIT OR Apache-2.0"
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version = "0.1.0"
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version = "0.1.0"
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authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
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authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
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edition = "2018"
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edition = "2018"
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use crate::{provider::ProviderError, JsonRpcClient};
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use async_trait::async_trait;
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use reqwest::{Client, Error as ReqwestError};
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use serde::{Deserialize, Serialize};
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use serde_json::Value;
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use std::{
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fmt,
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str::FromStr,
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sync::atomic::{AtomicU64, Ordering},
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};
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use thiserror::Error;
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use url::Url;
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/// A low-level JSON-RPC Client over HTTP.
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///
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/// # Example
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///
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/// ```no_run
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/// use ethers::{types::U64, providers::{JsonRpcClient, Http}};
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/// use std::str::FromStr;
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///
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/// # async fn foo() -> Result<(), Box<dyn std::error::Error>> {
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/// let provider = Http::from_str("http://localhost:8545")?;
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/// let block_number: U64 = provider.request("eth_blockNumber", None::<()>).await?;
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/// # Ok(())
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/// # }
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/// ```
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#[derive(Debug)]
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pub struct Provider {
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id: AtomicU64,
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client: Client,
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url: Url,
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}
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#[derive(Error, Debug)]
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/// Error thrown when sending an HTTP request
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pub enum WsError {
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/// Thrown if the request failed
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#[error(transparent)]
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ReqwestError(#[from] ReqwestError),
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#[error(transparent)]
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/// Thrown if the response could not be parsed
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JsonRpcError(#[from] errors::JsonRpcError),
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}
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impl From<ClientError> for ProviderError {
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fn from(src: ClientError) -> Self {
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ProviderError::JsonRpcClientError(Box::new(src))
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}
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}
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#[async_trait]
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impl JsonRpcClient for Provider {
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type Error = ClientError;
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/// Sends a POST request with the provided method and the params serialized as JSON
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/// over HTTP
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async fn request<T: Serialize + Send + Sync, R: for<'a> Deserialize<'a>>(
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&self,
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method: &str,
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params: T,
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) -> Result<R, ClientError> {
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let next_id = self.id.load(Ordering::SeqCst) + 1;
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self.id.store(next_id, Ordering::SeqCst);
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let payload = Request::new(next_id, method, params);
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let res = self
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.client
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.post(self.url.as_ref())
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.json(&payload)
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.send()
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.await?;
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let res = res.json::<Response<R>>().await?;
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Ok(res.data.into_result()?)
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}
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}
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impl Provider {
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/// Initializes a new HTTP Client
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///
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/// # Example
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///
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/// ```
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/// use ethers::providers::Http;
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/// use url::Url;
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///
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/// let url = Url::parse("http://localhost:8545").unwrap();
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/// let provider = Http::new(url);
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/// ```
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pub fn new(url: impl Into<Url>) -> Self {
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Self {
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id: AtomicU64::new(0),
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client: Client::new(),
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url: url.into(),
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}
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}
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}
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impl FromStr for Provider {
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type Err = url::ParseError;
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fn from_str(src: &str) -> Result<Self, Self::Err> {
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let url = Url::parse(src)?;
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Ok(Provider::new(url))
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}
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}
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impl Clone for Provider {
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fn clone(&self) -> Self {
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Self {
|
||||||
|
id: AtomicU64::new(0),
|
||||||
|
client: self.client.clone(),
|
||||||
|
url: self.url.clone(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// leak private type w/o exposing it
|
||||||
|
mod errors {
|
||||||
|
use super::*;
|
||||||
|
|
||||||
|
#[derive(Serialize, Deserialize, Debug, Clone, Error)]
|
||||||
|
/// A JSON-RPC 2.0 error
|
||||||
|
pub struct JsonRpcError {
|
||||||
|
/// The error code
|
||||||
|
pub code: i64,
|
||||||
|
/// The error message
|
||||||
|
pub message: String,
|
||||||
|
/// Additional data
|
||||||
|
pub data: Option<Value>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl fmt::Display for JsonRpcError {
|
||||||
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||||
|
write!(
|
||||||
|
f,
|
||||||
|
"(code: {}, message: {}, data: {:?})",
|
||||||
|
self.code, self.message, self.data
|
||||||
|
)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Serialize, Deserialize, Debug)]
|
||||||
|
/// A JSON-RPC request
|
||||||
|
struct Request<'a, T> {
|
||||||
|
id: u64,
|
||||||
|
jsonrpc: &'a str,
|
||||||
|
method: &'a str,
|
||||||
|
params: T,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl<'a, T> Request<'a, T> {
|
||||||
|
/// Creates a new JSON RPC request
|
||||||
|
fn new(id: u64, method: &'a str, params: T) -> Self {
|
||||||
|
Self {
|
||||||
|
id,
|
||||||
|
jsonrpc: "2.0",
|
||||||
|
method,
|
||||||
|
params,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Serialize, Deserialize, Debug, Clone)]
|
||||||
|
struct Response<T> {
|
||||||
|
id: u64,
|
||||||
|
jsonrpc: String,
|
||||||
|
#[serde(flatten)]
|
||||||
|
data: ResponseData<T>,
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Serialize, Deserialize, Debug, Clone)]
|
||||||
|
#[serde(untagged)]
|
||||||
|
enum ResponseData<R> {
|
||||||
|
Error { error: errors::JsonRpcError },
|
||||||
|
Success { result: R },
|
||||||
|
}
|
||||||
|
|
||||||
|
impl<R> ResponseData<R> {
|
||||||
|
/// Consume response and return value
|
||||||
|
fn into_result(self) -> Result<R, errors::JsonRpcError> {
|
||||||
|
match self {
|
||||||
|
ResponseData::Success { result } => Ok(result),
|
||||||
|
ResponseData::Error { error } => Err(error),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[cfg(test)]
|
||||||
|
mod tests {
|
||||||
|
use super::*;
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn response() {
|
||||||
|
let response: Response<u64> =
|
||||||
|
serde_json::from_str(r#"{"jsonrpc": "2.0", "result": 19, "id": 1}"#).unwrap();
|
||||||
|
assert_eq!(response.id, 1);
|
||||||
|
assert_eq!(response.data.into_result().unwrap(), 19);
|
||||||
|
}
|
||||||
|
}
|
|
@ -1,5 +1,6 @@
|
||||||
[package]
|
[package]
|
||||||
name = "ethers-signers"
|
name = "ethers-signers"
|
||||||
|
license = "MIT OR Apache-2.0"
|
||||||
version = "0.1.0"
|
version = "0.1.0"
|
||||||
authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
|
authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
|
||||||
edition = "2018"
|
edition = "2018"
|
||||||
|
|
|
@ -2,6 +2,7 @@
|
||||||
name = "ethers"
|
name = "ethers"
|
||||||
version = "0.1.0"
|
version = "0.1.0"
|
||||||
authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
|
authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
|
||||||
|
license = "MIT OR Apache-2.0"
|
||||||
edition = "2018"
|
edition = "2018"
|
||||||
readme = "README.md"
|
readme = "README.md"
|
||||||
documentation = "https://docs.rs/ethers"
|
documentation = "https://docs.rs/ethers"
|
||||||
|
|
Loading…
Reference in New Issue