mirror of
https://github.com/mimblewimble/grin.git
synced 2025-02-12 22:31:09 +03:00
0967a5302b
* Add kernel commitments sum and kernel and output MMR sizes to block header * Sum a block without including previous sums, cleanup. Blocks are now summed and validated based on their own totals and not the totals since genesis. This allows to get rid of BlockSum and simplified the setting of a new block's roots, kernel sum and MMR sizes. Fixes #116 * Additional kernel MMR validation to check all prior header roots successively * Wallet tests fix
128 lines
3.3 KiB
Rust
128 lines
3.3 KiB
Rust
// Copyright 2018 The Grin Developers
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//! RESTful API server to easily expose services as RESTful JSON/HTTP endpoints.
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//! Fairly constrained on what the service API must look like by design.
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//!
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//! To use it, just have your service(s) implement the ApiEndpoint trait and
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//! register them on a ApiServer.
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use std::fmt::{self, Display};
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use std::mem;
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use std::net::ToSocketAddrs;
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use std::string::ToString;
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use failure::{Backtrace, Context, Fail};
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use iron::Listening;
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use iron::middleware::Handler;
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use iron::prelude::Iron;
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use mount::Mount;
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use router::Router;
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/// Errors that can be returned by an ApiEndpoint implementation.
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#[derive(Debug)]
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pub struct Error {
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inner: Context<ErrorKind>,
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}
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#[derive(Clone, Eq, PartialEq, Debug, Fail)]
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pub enum ErrorKind {
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#[fail(display = "Internal error: {}", _0)]
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Internal(String),
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#[fail(display = "Bad arguments: {}", _0)]
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Argument(String),
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#[fail(display = "Not found.")]
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NotFound,
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}
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impl Fail for Error {
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fn cause(&self) -> Option<&Fail> {
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self.inner.cause()
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}
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fn backtrace(&self) -> Option<&Backtrace> {
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self.inner.backtrace()
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}
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}
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impl Display for Error {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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Display::fmt(&self.inner, f)
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}
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}
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impl Error {
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pub fn kind(&self) -> &ErrorKind {
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self.inner.get_context()
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}
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}
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impl From<ErrorKind> for Error {
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fn from(kind: ErrorKind) -> Error {
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Error {
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inner: Context::new(kind),
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}
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}
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}
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impl From<Context<ErrorKind>> for Error {
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fn from(inner: Context<ErrorKind>) -> Error {
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Error { inner: inner }
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}
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}
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/// HTTP server allowing the registration of ApiEndpoint implementations.
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pub struct ApiServer {
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root: String,
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router: Router,
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mount: Mount,
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server_listener: Option<Listening>,
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}
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impl ApiServer {
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/// Creates a new ApiServer that will serve ApiEndpoint implementations
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/// under the root URL.
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pub fn new(root: String) -> ApiServer {
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ApiServer {
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root: root,
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router: Router::new(),
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mount: Mount::new(),
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server_listener: None,
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}
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}
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/// Starts the ApiServer at the provided address.
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pub fn start<A: ToSocketAddrs>(&mut self, addr: A) -> Result<(), String> {
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// replace this value to satisfy borrow checker
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let r = mem::replace(&mut self.router, Router::new());
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let mut m = mem::replace(&mut self.mount, Mount::new());
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m.mount("/", r);
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let result = Iron::new(m).http(addr);
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let return_value = result.as_ref().map(|_| ()).map_err(|e| e.to_string());
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self.server_listener = Some(result.unwrap());
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return_value
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}
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/// Stops the API server
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pub fn stop(&mut self) {
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let r = mem::replace(&mut self.server_listener, None);
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r.unwrap().close().unwrap();
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}
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/// Registers an iron handler (via mount)
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pub fn register_handler<H: Handler>(&mut self, handler: H) -> &mut Mount {
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self.mount.mount(&self.root, handler)
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}
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}
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