mirror of
https://github.com/mimblewimble/grin.git
synced 2025-01-21 11:31:08 +03:00
88 lines
2.2 KiB
Rust
88 lines
2.2 KiB
Rust
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// Copyright 2016 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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use std::sync::Arc;
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use iron::prelude::*;
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use iron::Handler;
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use iron::status;
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use urlencoded::UrlEncodedQuery;
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use serde_json;
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use chain;
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use rest::*;
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use types::*;
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use secp::pedersen::Commitment;
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use util;
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use util::LOGGER;
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pub struct UtxoHandler {
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pub chain: Arc<chain::Chain>,
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}
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impl UtxoHandler {
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fn get_utxo(&self, id: &str) -> Result<Output, Error> {
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debug!(LOGGER, "getting utxo: {}", id);
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let c = util::from_hex(String::from(id))
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.map_err(|_| {
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Error::Argument(format!("Not a valid commitment: {}", id))
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})?;
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let commit = Commitment::from_vec(c);
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let out = self.chain.get_unspent(&commit)
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.map_err(|_| Error::NotFound)?;
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let header = self.chain
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.get_block_header_by_output_commit(&commit)
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.map_err(|_| Error::NotFound)?;
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Ok(Output::from_output(&out, &header))
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}
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}
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//
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// Supports retrieval of multiple outputs in a single request -
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// GET /v2/chain/utxos?id=xxx,yyy,zzz
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// GET /v2/chain/utxos?id=xxx&id=yyy&id=zzz
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//
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impl Handler for UtxoHandler {
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fn handle(&self, req: &mut Request) -> IronResult<Response> {
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let mut commitments: Vec<&str> = vec![];
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if let Ok(params) = req.get_ref::<UrlEncodedQuery>() {
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if let Some(ids) = params.get("id") {
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for id in ids {
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for id in id.split(",") {
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commitments.push(id.clone());
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}
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}
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}
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}
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let mut utxos: Vec<Output> = vec![];
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for commit in commitments {
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if let Ok(out) = self.get_utxo(commit) {
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utxos.push(out);
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}
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}
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match serde_json::to_string(&utxos) {
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Ok(json) => Ok(Response::with((status::Ok, json))),
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Err(_) => Ok(Response::with((status::BadRequest, ""))),
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}
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}
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}
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