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michalrusmichalrus
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[DDW-1203] Define a proxy for currency conversions
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‎flake.nix‎

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@@ -27,6 +27,7 @@
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default = package.mainnet;
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makeSignedInstaller = __mapAttrs (_: a: a.makeSignedInstaller) internal;
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buildkitePipeline = import ./nix/buildkite-pipeline.nix { inherit inputs targetSystem; };
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ociImages = import ./nix/oci-images.nix { inherit inputs targetSystem; };
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}) {
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x86_64-linux = ./nix/x86_64-linux.nix;
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x86_64-windows = ./nix/x86_64-windows.nix;

‎nix/oci-images.nix‎

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{ inputs, targetSystem }:
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let pkgs = inputs.nixpkgs.legacyPackages.${targetSystem}; in
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if targetSystem == "x86_64-linux" then {
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coinGeckoProxy = let
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nginx = pkgs.nginxMainline;
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nginxCmd = { listenPort }: [ "${nginx}/bin/nginx" "-c" (nginxConf { inherit listenPort; }) ];
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nginxConf = { listenPort }: let
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cacheZone = "one";
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nginxConf = ''
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daemon off;
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user root root;
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error_log stderr notice;
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events {
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worker_connections 1024;
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}
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http {
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access_log /dev/stdout;
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include ${nginx}/conf/mime.types;
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default_type application/octet-stream;
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sendfile on;
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keepalive_timeout 65;
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proxy_cache_path /var/cache/nginx/${cacheZone} keys_zone=${cacheZone}:16m inactive=10m max_size=256m;
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resolver 8.8.8.8 8.8.4.4;
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server {
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listen ${toString listenPort};
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server_name localhost;
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location / {
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return 404;
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}
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error_page 500 502 503 504 /50x.html;
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location = /50x.html {
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root ${nginx}/html;
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}
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location = /api/v3/coins/list {
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${proxyConf}
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proxy_cache_valid 200 10m;
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proxy_cache_valid any 1m;
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set $coingecko https://api.coingecko.com;
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proxy_pass $coingecko;
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}
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location = /api/v3/simple/supported_vs_currencies {
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${proxyConf}
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proxy_cache_valid 200 10m;
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proxy_cache_valid any 1m;
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set $coingecko https://api.coingecko.com;
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proxy_pass $coingecko;
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}
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location = /api/v3/coins/markets {
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if ( $args !~ ^ids=cardano&vs_currency=[a-z0-9]+$ ) { return 400; }
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${proxyConf}
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proxy_cache_valid 200 400 10m;
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proxy_cache_valid any 1m;
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set $coingecko https://api.coingecko.com;
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proxy_pass $coingecko;
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}
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}
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}
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'';
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proxyConf = ''
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proxy_cache ${cacheZone};
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proxy_cache_lock on;
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proxy_cache_lock_age 10s;
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proxy_cache_lock_timeout 10s;
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proxy_connect_timeout 60s;
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# Don’t let our clients control caching behavior:
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proxy_cache_revalidate off;
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proxy_cache_use_stale error timeout invalid_header updating
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http_500 http_502 http_503 http_504
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http_403 http_404 http_429;
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proxy_cache_background_update on;
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# Hide some original headers:
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proxy_hide_header x-request-id;
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proxy_hide_header x-runtime;
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proxy_hide_header cf-ray;
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proxy_hide_header set-cookie;
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proxy_hide_header age;
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proxy_hide_header expires;
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proxy_hide_header etag;
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proxy_hide_header alternate-protocol;
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proxy_hide_header cf-cache-status;
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# Don’t close upstream connections if our client closes before getting a response:
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proxy_ignore_client_abort on;
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# Ignore all upstream fields that could interfere with our caching policies:
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proxy_ignore_headers X-Accel-Redirect X-Accel-Expires X-Accel-Limit-Rate
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X-Accel-Buffering X-Accel-Charset
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Expires Cache-Control Set-Cookie Vary;
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# Hide errors ≥300:
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proxy_intercept_errors on;
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proxy_pass_request_body off;
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proxy_set_header Content-Length "";
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proxy_pass_request_headers off;
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proxy_ssl_verify on;
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proxy_ssl_trusted_certificate /etc/ssl/certs/ca-bundle.crt;
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proxy_ssl_server_name on;
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add_header X-Cache-Status $upstream_cache_status;
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proxy_set_header User-Agent "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36";
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'';
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in pkgs.writeText "nginx-${toString listenPort}.conf" nginxConf;
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entrypoint = pkgs.writeShellScript "entrypoint" ''
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set -euo pipefail
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export PATH="${with pkgs; lib.makeBinPath [ coreutils ]}:$PATH"
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# Let’s pre-populate the cache with the most popular requests:
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${pkgs.lib.escapeShellArgs (nginxCmd { listenPort = 81; })} &
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initial_pid=$!
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for endpoint in \
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'/api/v3/coins/list' \
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'/api/v3/simple/supported_vs_currencies' \
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'/api/v3/coins/markets?ids=cardano&vs_currency=usd' \
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'/api/v3/coins/markets?ids=cardano&vs_currency=jpy' \
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; do
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sleep 2
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echo "Will pre-populate cache with: ‘$endpoint’…"
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sleep 3
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${pkgs.curl}/bin/curl >/dev/null -sS "http://127.0.0.1:81$endpoint" && echo ' ok' || echo ' failed'
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done
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kill -s TERM $initial_pid
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exec ${pkgs.lib.escapeShellArgs (nginxCmd { listenPort = 80; })}
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'';
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in pkgs.dockerTools.buildImage rec {
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name = "daedalus-coingecko-proxy";
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tag = inputs.self.rev or "dirty";
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copyToRoot = with pkgs.dockerTools; [ caCertificates fakeNss ]; # XXX: needed for nginx
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runAsRoot = ''
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#!/bin/sh
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set -euo pipefail
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mkdir -p /var/log/nginx /var/cache/nginx
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exec ${pkgs.lib.escapeShellArgs (nginxCmd { listenPort = 80; })} -t
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'';
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config.Expose = "80/tcp";
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config.Entrypoint = [entrypoint];
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};
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} else {}

‎source/renderer/app/config/currencyConfig.coingecko.ts‎

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Original file line numberDiff line numberDiff line change
@@ -26,24 +26,30 @@ type CurrencyRateGeckoResponse = Array<{
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const id = 'coingecko';
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const name = 'CoinGecko';
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const website = 'https://www.coingecko.com/en/api';
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const hostname = 'api.coingecko.com';
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const hostname = '127.0.0.1';
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const version = 'v3';
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const pathBase = `api/${version}`;
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const requests = {
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list: [
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{
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hostname,
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port: 8095,
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protocol: 'http',
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method: 'GET',
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path: `/${pathBase}/coins/list`,
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},
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{
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hostname,
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port: 8095,
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protocol: 'http',
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method: 'GET',
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path: `/${pathBase}/simple/supported_vs_currencies`,
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},
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],
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rate: ({ code }: LocalizedCurrency) => ({
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hostname,
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port: 8095,
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protocol: 'http',
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method: 'GET',
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path: `/${pathBase}/coins/markets?ids=cardano&vs_currency=${code}`,
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}),

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