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///
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/// Copyright 2015-2019 Oliver Giles
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///
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/// This file is part of Laminar
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///
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/// Laminar is free software: you can redistribute it and/or modify
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/// it under the terms of the GNU General Public License as published by
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/// the Free Software Foundation, either version 3 of the License, or
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/// (at your option) any later version.
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///
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/// Laminar is distributed in the hope that it will be useful,
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/// but WITHOUT ANY WARRANTY; without even the implied warranty of
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/// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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/// GNU General Public License for more details.
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///
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/// You should have received a copy of the GNU General Public License
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/// along with Laminar. If not, see <http://www.gnu.org/licenses/>
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///
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#include "server.h"
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#include "interface.h"
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#include "laminar.capnp.h"
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#include "resources.h"
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#include "log.h"
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#include <capnp/ez-rpc.h>
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#include <capnp/rpc-twoparty.h>
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#include <capnp/rpc.capnp.h>
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#include <kj/async-io.h>
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#include <kj/async-unix.h>
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#include <kj/threadlocal.h>
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#include <sys/eventfd.h>
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#include <sys/inotify.h>
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#include <sys/signal.h>
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#include <sys/signalfd.h>
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#include <rapidjson/document.h>
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// Size of buffer used to read from file descriptors. Should be
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// a multiple of sizeof(struct signalfd_siginfo) == 128
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#define PROC_IO_BUFSIZE 4096
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namespace {
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// Used for returning run state to RPC clients
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LaminarCi::JobResult fromRunState(RunState state) {
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switch(state) {
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case RunState::SUCCESS: return LaminarCi::JobResult::SUCCESS;
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case RunState::FAILED: return LaminarCi::JobResult::FAILED;
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case RunState::ABORTED: return LaminarCi::JobResult::ABORTED;
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default:
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return LaminarCi::JobResult::UNKNOWN;
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}
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}
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}
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// This is the implementation of the Laminar Cap'n Proto RPC interface.
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// As such, it implements the pure virtual interface generated from
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// laminar.capnp with calls to the LaminarInterface
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class RpcImpl : public LaminarCi::Server, public LaminarWaiter {
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public:
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RpcImpl(LaminarInterface& l) :
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LaminarCi::Server(),
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laminar(l)
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{
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laminar.registerWaiter(this);
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}
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~RpcImpl() override {
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laminar.deregisterWaiter(this);
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}
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// Queue a job, without waiting for it to start
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kj::Promise<void> queue(QueueContext context) override {
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std::string jobName = context.getParams().getJobName();
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LLOG(INFO, "RPC queue", jobName);
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LaminarCi::MethodResult result = laminar.queueJob(jobName, params(context.getParams().getParams()))
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? LaminarCi::MethodResult::SUCCESS
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: LaminarCi::MethodResult::FAILED;
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context.getResults().setResult(result);
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return kj::READY_NOW;
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}
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// Start a job, without waiting for it to finish
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kj::Promise<void> start(StartContext context) override {
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std::string jobName = context.getParams().getJobName();
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LLOG(INFO, "RPC start", jobName);
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std::shared_ptr<Run> run = laminar.queueJob(jobName, params(context.getParams().getParams()));
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if(Run* r = run.get()) {
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return r->whenStarted().then([context,r]() mutable {
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context.getResults().setResult(LaminarCi::MethodResult::SUCCESS);
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context.getResults().setBuildNum(r->build);
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});
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} else {
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context.getResults().setResult(LaminarCi::MethodResult::FAILED);
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return kj::READY_NOW;
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}
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}
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// Start a job and wait for the result
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kj::Promise<void> run(RunContext context) override {
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std::string jobName = context.getParams().getJobName();
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LLOG(INFO, "RPC run", jobName);
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std::shared_ptr<Run> run = laminar.queueJob(jobName, params(context.getParams().getParams()));
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if(const Run* r = run.get()) {
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runWaiters[r].emplace_back(kj::newPromiseAndFulfiller<RunState>());
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return runWaiters[r].back().promise.then([context,run](RunState state) mutable {
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context.getResults().setResult(fromRunState(state));
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context.getResults().setBuildNum(run->build);
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});
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} else {
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context.getResults().setResult(LaminarCi::JobResult::UNKNOWN);
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return kj::READY_NOW;
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}
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}
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// Set a parameter on a running build
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kj::Promise<void> set(SetContext context) override {
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std::string jobName = context.getParams().getRun().getJob();
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uint buildNum = context.getParams().getRun().getBuildNum();
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LLOG(INFO, "RPC set", jobName, buildNum);
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LaminarCi::MethodResult result = laminar.setParam(jobName, buildNum,
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context.getParams().getParam().getName(), context.getParams().getParam().getValue())
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? LaminarCi::MethodResult::SUCCESS
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: LaminarCi::MethodResult::FAILED;
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context.getResults().setResult(result);
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return kj::READY_NOW;
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}
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// List jobs in queue
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kj::Promise<void> listQueued(ListQueuedContext context) override {
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const std::list<std::shared_ptr<Run>>& queue = laminar.listQueuedJobs();
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auto res = context.getResults().initResult(queue.size());
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int i = 0;
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for(auto it : queue) {
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res.set(i++, it->name);
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}
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return kj::READY_NOW;
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}
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// List running jobs
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kj::Promise<void> listRunning(ListRunningContext context) override {
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const RunSet& active = laminar.listRunningJobs();
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auto res = context.getResults().initResult(active.size());
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int i = 0;
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for(auto it : active) {
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res[i].setJob(it->name);
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res[i].setBuildNum(it->build);
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i++;
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}
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return kj::READY_NOW;
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}
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// List known jobs
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kj::Promise<void> listKnown(ListKnownContext context) override {
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std::list<std::string> known = laminar.listKnownJobs();
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auto res = context.getResults().initResult(known.size());
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int i = 0;
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for(auto it : known) {
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res.set(i++, it);
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}
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return kj::READY_NOW;
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}
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kj::Promise<void> abort(AbortContext context) override {
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std::string jobName = context.getParams().getRun().getJob();
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uint buildNum = context.getParams().getRun().getBuildNum();
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LLOG(INFO, "RPC abort", jobName, buildNum);
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LaminarCi::MethodResult result = laminar.abort(jobName, buildNum)
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? LaminarCi::MethodResult::SUCCESS
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: LaminarCi::MethodResult::FAILED;
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context.getResults().setResult(result);
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return kj::READY_NOW;
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}
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private:
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// Helper to convert an RPC parameter list to a hash map
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ParamMap params(const capnp::List<LaminarCi::JobParam>::Reader& paramReader) {
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ParamMap res;
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for(auto p : paramReader) {
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res[p.getName().cStr()] = p.getValue().cStr();
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}
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return res;
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}
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// Implements LaminarWaiter::complete
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void complete(const Run* r) override {
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for(kj::PromiseFulfillerPair<RunState>& w : runWaiters[r])
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w.fulfiller->fulfill(RunState(r->result));
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runWaiters.erase(r);
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}
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private:
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LaminarInterface& laminar;
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std::unordered_map<const Run*, std::list<kj::PromiseFulfillerPair<RunState>>> runWaiters;
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};
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// This is the implementation of the HTTP/Websocket interface. It creates
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// websocket connections as LaminarClients and registers them with the
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// LaminarInterface so that status messages will be delivered to the client.
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// On opening a websocket connection, it delivers a status snapshot message
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// (see LaminarInterface::sendStatus)
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class HttpImpl : public kj::HttpService {
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public:
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HttpImpl(LaminarInterface& laminar, kj::HttpHeaderTable&tbl) :
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laminar(laminar),
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responseHeaders(tbl)
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{}
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virtual ~HttpImpl() {}
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private:
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class HttpChunkedClient : public LaminarClient {
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public:
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HttpChunkedClient(LaminarInterface& laminar) :
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laminar(laminar)
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{}
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~HttpChunkedClient() override {
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laminar.deregisterClient(this);
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}
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void sendMessage(std::string payload) override {
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chunks.push_back(kj::mv(payload));
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fulfiller->fulfill();
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}
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void notifyJobFinished() override {
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done = true;
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fulfiller->fulfill();
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}
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LaminarInterface& laminar;
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std::list<std::string> chunks;
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// cannot use chunks.empty() because multiple fulfill()s
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// could be coalesced
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bool done = false;
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kj::Own<kj::PromiseFulfiller<void>> fulfiller;
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};
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// Implements LaminarClient and holds the Websocket connection object.
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// Automatically destructed when the promise created in request() resolves
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// or is cancelled
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class WebsocketClient : public LaminarClient {
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public:
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WebsocketClient(LaminarInterface& laminar, kj::Own<kj::WebSocket>&& ws) :
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laminar(laminar),
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ws(kj::mv(ws))
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{}
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~WebsocketClient() override {
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laminar.deregisterClient(this);
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}
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virtual void sendMessage(std::string payload) override {
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messages.emplace_back(kj::mv(payload));
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// sendMessage might be called several times before the event loop
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// gets a chance to act on the fulfiller. So store the payload here
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// where it can be fetched later and don't pass the payload with the
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// fulfiller because subsequent calls to fulfill() are ignored.
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fulfiller->fulfill();
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}
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LaminarInterface& laminar;
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kj::Own<kj::WebSocket> ws;
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std::list<std::string> messages;
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kj::Own<kj::PromiseFulfiller<void>> fulfiller;
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};
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kj::Promise<void> websocketRead(WebsocketClient& lc)
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{
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return lc.ws->receive().then([&lc,this](kj::WebSocket::Message&& message) {
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KJ_SWITCH_ONEOF(message) {
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KJ_CASE_ONEOF(str, kj::String) {
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rapidjson::Document d;
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d.ParseInsitu(const_cast<char*>(str.cStr()));
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if(d.HasMember("page") && d["page"].IsInt() && d.HasMember("field") && d["field"].IsString() && d.HasMember("order") && d["order"].IsString()) {
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lc.scope.page = d["page"].GetInt();
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lc.scope.field = d["field"].GetString();
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lc.scope.order_desc = strcmp(d["order"].GetString(), "dsc") == 0;
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laminar.sendStatus(&lc);
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return websocketRead(lc);
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}
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}
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KJ_CASE_ONEOF(close, kj::WebSocket::Close) {
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// clean socket shutdown
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return lc.ws->close(close.code, close.reason);
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}
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KJ_CASE_ONEOF_DEFAULT {}
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}
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// unhandled/unknown message
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return lc.ws->disconnect();
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}, [](kj::Exception&& e){
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// server logs suggest early catching here avoids fatal exception later
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// TODO: reproduce in unit test
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LLOG(WARNING, e.getDescription());
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return kj::READY_NOW;
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});
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}
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kj::Promise<void> websocketWrite(WebsocketClient& lc)
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{
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auto paf = kj::newPromiseAndFulfiller<void>();
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lc.fulfiller = kj::mv(paf.fulfiller);
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return paf.promise.then([this,&lc]{
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kj::Promise<void> p = kj::READY_NOW;
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std::list<std::string> messages = kj::mv(lc.messages);
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for(std::string& s : messages) {
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p = p.then([&s,&lc]{
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kj::String str = kj::str(s);
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return lc.ws->send(str).attach(kj::mv(str));
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});
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}
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return p.attach(kj::mv(messages)).then([this,&lc]{
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return websocketWrite(lc);
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});
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});
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}
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kj::Promise<void> websocketUpgraded(WebsocketClient& lc, std::string resource) {
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// convert the requested URL to a MonitorScope
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if(resource.substr(0, 5) == "/jobs") {
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if(resource.length() == 5) {
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lc.scope.type = MonitorScope::ALL;
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} else {
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resource = resource.substr(5);
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size_t split = resource.find('/',1);
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std::string job = resource.substr(1,split-1);
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if(!job.empty()) {
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lc.scope.job = job;
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lc.scope.type = MonitorScope::JOB;
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}
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if(split != std::string::npos) {
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size_t split2 = resource.find('/', split+1);
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std::string run = resource.substr(split+1, split2-split);
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if(!run.empty()) {
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lc.scope.num = static_cast<uint>(atoi(run.c_str()));
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lc.scope.type = MonitorScope::RUN;
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}
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if(split2 != std::string::npos && resource.compare(split2, 4, "/log") == 0) {
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lc.scope.type = MonitorScope::LOG;
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}
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}
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}
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}
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laminar.registerClient(&lc);
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kj::Promise<void> connection = websocketRead(lc).exclusiveJoin(websocketWrite(lc));
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// registerClient can happen after a successful websocket handshake.
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// However, the connection might not be closed gracefully, so the
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// corresponding deregister operation happens in the WebsocketClient
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// destructor rather than the close handler or a then() clause
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laminar.sendStatus(&lc);
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return connection;
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}
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// Parses the url of the form /log/NAME/NUMBER, filling in the passed
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// references and returning true if successful. /log/NAME/latest is
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// also allowed, in which case the num reference is set to 0
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bool parseLogEndpoint(kj::StringPtr url, std::string& name, uint& num) {
|
|
|
|
if(url.startsWith("/log/")) {
|
|
|
|
kj::StringPtr path = url.slice(5);
|
|
|
|
KJ_IF_MAYBE(sep, path.findFirst('/')) {
|
|
|
|
name = path.slice(0, *sep).begin();
|
|
|
|
kj::StringPtr tail = path.slice(*sep+1);
|
|
|
|
num = static_cast<uint>(atoi(tail.begin()));
|
|
|
|
name.erase(*sep);
|
|
|
|
if(tail == "latest")
|
|
|
|
num = laminar.latestRun(name);
|
|
|
|
if(num > 0)
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
kj::Promise<void> writeLogChunk(HttpChunkedClient* client, kj::AsyncOutputStream* stream) {
|
|
|
|
auto paf = kj::newPromiseAndFulfiller<void>();
|
|
|
|
client->fulfiller = kj::mv(paf.fulfiller);
|
|
|
|
return paf.promise.then([=]{
|
|
|
|
kj::Promise<void> p = kj::READY_NOW;
|
|
|
|
std::list<std::string> chunks = kj::mv(client->chunks);
|
|
|
|
for(std::string& s : chunks) {
|
|
|
|
p = p.then([=,&s]{
|
|
|
|
return stream->write(s.data(), s.size());
|
|
|
|
});
|
|
|
|
}
|
|
|
|
return p.attach(kj::mv(chunks)).then([=]{
|
|
|
|
return client->done ? kj::Promise<void>(kj::READY_NOW) : writeLogChunk(client, stream);
|
|
|
|
});
|
|
|
|
});
|
|
|
|
}
|
|
|
|
|
|
|
|
virtual kj::Promise<void> request(kj::HttpMethod method, kj::StringPtr url, const kj::HttpHeaders& headers,
|
|
|
|
kj::AsyncInputStream& requestBody, Response& response) override
|
|
|
|
{
|
|
|
|
if(headers.isWebSocket()) {
|
|
|
|
responseHeaders.clear();
|
|
|
|
kj::Own<WebsocketClient> lc = kj::heap<WebsocketClient>(laminar, response.acceptWebSocket(responseHeaders));
|
|
|
|
return websocketUpgraded(*lc, url.cStr()).attach(kj::mv(lc));
|
|
|
|
} else {
|
|
|
|
// handle regular HTTP request
|
|
|
|
const char* start, *end, *content_type;
|
|
|
|
std::string badge;
|
|
|
|
// for log requests
|
|
|
|
std::string name;
|
|
|
|
uint num;
|
|
|
|
responseHeaders.clear();
|
|
|
|
if(url.startsWith("/archive/")) {
|
|
|
|
KJ_IF_MAYBE(file, laminar.getArtefact(url.slice(strlen("/archive/")))) {
|
|
|
|
auto array = (*file)->mmap(0, (*file)->stat().size);
|
|
|
|
responseHeaders.add("Content-Transfer-Encoding", "binary");
|
|
|
|
auto stream = response.send(200, "OK", responseHeaders, array.size());
|
|
|
|
return stream->write(array.begin(), array.size()).attach(kj::mv(array)).attach(kj::mv(file)).attach(kj::mv(stream));
|
|
|
|
}
|
|
|
|
} else if(parseLogEndpoint(url, name, num)) {
|
|
|
|
kj::Own<HttpChunkedClient> cc = kj::heap<HttpChunkedClient>(laminar);
|
|
|
|
cc->scope.job = name;
|
|
|
|
cc->scope.num = num;
|
|
|
|
bool complete;
|
|
|
|
std::string output;
|
|
|
|
cc->scope.type = MonitorScope::LOG;
|
|
|
|
if(laminar.handleLogRequest(name, num, output, complete)) {
|
|
|
|
responseHeaders.set(kj::HttpHeaderId::CONTENT_TYPE, "text/plain; charset=utf-8");
|
|
|
|
responseHeaders.add("Content-Transfer-Encoding", "binary");
|
|
|
|
// Disables nginx reverse-proxy's buffering. Necessary for dynamic log output.
|
|
|
|
responseHeaders.add("X-Accel-Buffering", "no");
|
|
|
|
auto stream = response.send(200, "OK", responseHeaders, nullptr);
|
|
|
|
laminar.registerClient(cc.get());
|
|
|
|
return stream->write(output.data(), output.size()).then([=,s=stream.get(),c=cc.get()]{
|
|
|
|
if(complete)
|
|
|
|
return kj::Promise<void>(kj::READY_NOW);
|
|
|
|
return writeLogChunk(c, s);
|
|
|
|
}).attach(kj::mv(output)).attach(kj::mv(stream)).attach(kj::mv(cc));
|
|
|
|
}
|
|
|
|
} else if(url == "/custom/style.css") {
|
|
|
|
responseHeaders.set(kj::HttpHeaderId::CONTENT_TYPE, "text/css; charset=utf-8");
|
|
|
|
responseHeaders.add("Content-Transfer-Encoding", "binary");
|
|
|
|
std::string css = laminar.getCustomCss();
|
|
|
|
auto stream = response.send(200, "OK", responseHeaders, css.size());
|
|
|
|
return stream->write(css.data(), css.size()).attach(kj::mv(css)).attach(kj::mv(stream));
|
|
|
|
} else if(resources.handleRequest(url.cStr(), &start, &end, &content_type)) {
|
|
|
|
responseHeaders.set(kj::HttpHeaderId::CONTENT_TYPE, content_type);
|
|
|
|
responseHeaders.add("Content-Encoding", "gzip");
|
|
|
|
responseHeaders.add("Content-Transfer-Encoding", "binary");
|
|
|
|
auto stream = response.send(200, "OK", responseHeaders, end-start);
|
|
|
|
return stream->write(start, end-start).attach(kj::mv(stream));
|
|
|
|
} else if(url.startsWith("/badge/") && url.endsWith(".svg") && laminar.handleBadgeRequest(std::string(url.begin()+7, url.size()-11), badge)) {
|
|
|
|
responseHeaders.set(kj::HttpHeaderId::CONTENT_TYPE, "image/svg+xml");
|
|
|
|
responseHeaders.add("Cache-Control", "no-cache");
|
|
|
|
auto stream = response.send(200, "OK", responseHeaders, badge.size());
|
|
|
|
return stream->write(badge.data(), badge.size()).attach(kj::mv(badge)).attach(kj::mv(stream));
|
|
|
|
}
|
|
|
|
return response.sendError(404, "Not Found", responseHeaders);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
LaminarInterface& laminar;
|
|
|
|
Resources resources;
|
|
|
|
kj::HttpHeaders responseHeaders;
|
|
|
|
};
|
|
|
|
|
|
|
|
// Context for an RPC connection
|
|
|
|
struct RpcConnection {
|
|
|
|
RpcConnection(kj::Own<kj::AsyncIoStream>&& stream,
|
|
|
|
capnp::Capability::Client bootstrap,
|
|
|
|
capnp::ReaderOptions readerOpts) :
|
|
|
|
stream(kj::mv(stream)),
|
|
|
|
network(*this->stream, capnp::rpc::twoparty::Side::SERVER, readerOpts),
|
|
|
|
rpcSystem(capnp::makeRpcServer(network, bootstrap))
|
|
|
|
{
|
|
|
|
}
|
|
|
|
kj::Own<kj::AsyncIoStream> stream;
|
|
|
|
capnp::TwoPartyVatNetwork network;
|
|
|
|
capnp::RpcSystem<capnp::rpc::twoparty::VatId> rpcSystem;
|
|
|
|
};
|
|
|
|
|
|
|
|
Server::Server(LaminarInterface& li, kj::StringPtr rpcBindAddress,
|
|
|
|
kj::StringPtr httpBindAddress) :
|
|
|
|
rpcInterface(kj::heap<RpcImpl>(li)),
|
|
|
|
laminarInterface(li),
|
|
|
|
ioContext(kj::setupAsyncIo()),
|
|
|
|
headerTable(),
|
|
|
|
httpService(kj::heap<HttpImpl>(li, headerTable)),
|
|
|
|
httpServer(kj::heap<kj::HttpServer>(ioContext.provider->getTimer(), headerTable, *httpService)),
|
|
|
|
listeners(kj::heap<kj::TaskSet>(*this)),
|
|
|
|
childTasks(*this),
|
|
|
|
httpConnections(*this),
|
|
|
|
httpReady(kj::newPromiseAndFulfiller<void>())
|
|
|
|
{
|
|
|
|
// RPC task
|
|
|
|
if(rpcBindAddress.startsWith("unix:"))
|
|
|
|
unlink(rpcBindAddress.slice(strlen("unix:")).cStr());
|
|
|
|
listeners->add(ioContext.provider->getNetwork().parseAddress(rpcBindAddress)
|
|
|
|
.then([this](kj::Own<kj::NetworkAddress>&& addr) {
|
|
|
|
return acceptRpcClient(addr->listen());
|
|
|
|
}));
|
|
|
|
|
|
|
|
// HTTP task
|
|
|
|
if(httpBindAddress.startsWith("unix:"))
|
|
|
|
unlink(httpBindAddress.slice(strlen("unix:")).cStr());
|
|
|
|
listeners->add(ioContext.provider->getNetwork().parseAddress(httpBindAddress)
|
|
|
|
.then([this](kj::Own<kj::NetworkAddress>&& addr) {
|
|
|
|
// TODO: a better way? Currently used only for testing
|
|
|
|
httpReady.fulfiller->fulfill();
|
|
|
|
kj::Own<kj::ConnectionReceiver> listener = addr->listen();
|
|
|
|
return httpServer->listenHttp(*listener).attach(kj::mv(listener));
|
|
|
|
}));
|
|
|
|
|
|
|
|
// handle watched paths
|
|
|
|
{
|
|
|
|
inotify_fd = inotify_init1(IN_NONBLOCK | IN_CLOEXEC);
|
|
|
|
pathWatch = readDescriptor(inotify_fd, [this](const char*, size_t){
|
|
|
|
laminarInterface.notifyConfigChanged();
|
|
|
|
});
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
Server::~Server() {
|
|
|
|
}
|
|
|
|
|
|
|
|
void Server::start() {
|
|
|
|
// The eventfd is used to quit the server later since we need to trigger
|
|
|
|
// a reaction from the event loop
|
|
|
|
efd_quit = eventfd(0, EFD_CLOEXEC|EFD_NONBLOCK);
|
|
|
|
kj::evalLater([this](){
|
|
|
|
static uint64_t _;
|
|
|
|
auto wakeEvent = ioContext.lowLevelProvider->wrapInputFd(efd_quit);
|
|
|
|
return wakeEvent->read(&_, sizeof(uint64_t)).attach(std::move(wakeEvent));
|
|
|
|
}).wait(ioContext.waitScope);
|
|
|
|
// Execution arrives here when the eventfd is triggered (in stop())
|
|
|
|
|
|
|
|
// Shutdown sequence:
|
|
|
|
// 1. stop accepting new connections
|
|
|
|
listeners = nullptr;
|
|
|
|
// 2. abort current jobs. Most of the time this isn't necessary since
|
|
|
|
// systemd stop or other kill mechanism will send SIGTERM to the whole
|
|
|
|
// process group.
|
|
|
|
laminarInterface.abortAll();
|
|
|
|
// 3. wait for all children to close
|
|
|
|
childTasks.onEmpty().wait(ioContext.waitScope);
|
|
|
|
// 4. run the loop once more to send any pending output to websocket clients
|
|
|
|
ioContext.waitScope.poll();
|
|
|
|
// 5. return: websockets will be destructed when class is deleted
|
|
|
|
}
|
|
|
|
|
|
|
|
void Server::stop() {
|
|
|
|
// This method is expected to be called in signal context, so an eventfd
|
|
|
|
// is used to get the main loop to react. See run()
|
|
|
|
eventfd_write(efd_quit, 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
kj::Promise<void> Server::readDescriptor(int fd, std::function<void(const char*,size_t)> cb) {
|
|
|
|
auto event = this->ioContext.lowLevelProvider->wrapInputFd(fd, kj::LowLevelAsyncIoProvider::TAKE_OWNERSHIP);
|
|
|
|
auto buffer = kj::heapArrayBuilder<char>(PROC_IO_BUFSIZE);
|
|
|
|
return handleFdRead(event, buffer.asPtr().begin(), cb).attach(std::move(event)).attach(std::move(buffer));
|
|
|
|
}
|
|
|
|
|
|
|
|
void Server::addTask(kj::Promise<void>&& task) {
|
|
|
|
childTasks.add(kj::mv(task));
|
|
|
|
}
|
|
|
|
|
|
|
|
kj::Promise<void> Server::addTimeout(int seconds, std::function<void ()> cb) {
|
|
|
|
return ioContext.lowLevelProvider->getTimer().afterDelay(seconds * kj::SECONDS).then([cb](){
|
|
|
|
cb();
|
|
|
|
}).eagerlyEvaluate(nullptr);
|
|
|
|
}
|
|
|
|
|
|
|
|
kj::Promise<int> Server::onChildExit(kj::Maybe<pid_t> &pid) {
|
|
|
|
return ioContext.unixEventPort.onChildExit(pid);
|
|
|
|
}
|
|
|
|
|
|
|
|
void Server::addWatchPath(const char* dpath) {
|
|
|
|
inotify_add_watch(inotify_fd, dpath, IN_ONLYDIR | IN_CLOSE_WRITE | IN_CREATE | IN_DELETE);
|
|
|
|
}
|
|
|
|
|
|
|
|
kj::Promise<void> Server::acceptRpcClient(kj::Own<kj::ConnectionReceiver>&& listener) {
|
|
|
|
kj::ConnectionReceiver& cr = *listener.get();
|
|
|
|
return cr.accept().then(kj::mvCapture(kj::mv(listener),
|
|
|
|
[this](kj::Own<kj::ConnectionReceiver>&& listener, kj::Own<kj::AsyncIoStream>&& connection) {
|
|
|
|
auto server = kj::heap<RpcConnection>(kj::mv(connection), rpcInterface, capnp::ReaderOptions());
|
|
|
|
childTasks.add(server->network.onDisconnect().attach(kj::mv(server)));
|
|
|
|
return acceptRpcClient(kj::mv(listener));
|
|
|
|
}));
|
|
|
|
}
|
|
|
|
|
|
|
|
// returns a promise which will read a chunk of data from the file descriptor
|
|
|
|
// wrapped by stream and invoke the provided callback with the read data.
|
|
|
|
// Repeats until ::read returns <= 0
|
|
|
|
kj::Promise<void> Server::handleFdRead(kj::AsyncInputStream* stream, char* buffer, std::function<void(const char*,size_t)> cb) {
|
|
|
|
return stream->tryRead(buffer, 1, PROC_IO_BUFSIZE).then([this,stream,buffer,cb](size_t sz) {
|
|
|
|
if(sz > 0) {
|
|
|
|
cb(buffer, sz);
|
|
|
|
return handleFdRead(stream, kj::mv(buffer), cb);
|
|
|
|
}
|
|
|
|
return kj::Promise<void>(kj::READY_NOW);
|
|
|
|
});
|
|
|
|
}
|
|
|
|
|
|
|
|
void Server::taskFailed(kj::Exception &&exception) {
|
|
|
|
//kj::throwFatalException(kj::mv(exception));
|
|
|
|
// prettier
|
|
|
|
fprintf(stderr, "fatal: %s\n", exception.getDescription().cStr());
|
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|