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/* Copyright 2016-present Facebook, Inc.
* Licensed under the Apache License, Version 2.0 */
#include "WatchmanClient.h"
#include <atomic>
#include <chrono>
#include <condition_variable>
#include <mutex>
#include <thread>
#include <unistd.h>
#include <folly/init/Init.h>
#include <folly/io/async/EventBaseThread.h>
#include <folly/json.h>
#include <glog/logging.h>
using namespace folly;
using namespace watchman;
using namespace std::chrono;
int main(int argc, char** argv) {
folly::init(&argc, &argv);
system("rm -f hit");
folly::EventBaseThread ebt;
auto eb = ebt.getEventBase();
Promise<Unit> errorCallbackTrigger;
WatchmanClient c(
eb,
Optional<std::string>(),
nullptr,
[&errorCallbackTrigger](exception_wrapper&) {
LOG(INFO) << "Expected global error caught";
errorCallbackTrigger.setValue();
});
c.connect().wait();
LOG(INFO) << "Connected to watchman";
SCOPE_EXIT {
c.close(); // must close before the EventBase is terminated
ebt.stop();
};
std::mutex mutex;
std::condition_variable cv;
std::atomic_bool hit(false);
char current_dir[PATH_MAX];
CHECK(getcwd(current_dir, PATH_MAX)) << "Error getting current dir";
dynamic query = dynamic::object("fields", dynamic::array("name"))(
"expression", dynamic::array("name", "hit"));
auto sub = c.subscribe(
query,
current_dir,
eb,
[&](Try<dynamic>&& data) {
if ((*data)["is_fresh_instance"].getBool()) {
return;
} else {
if ((*data)["files"][0].getString().find("hit") !=
std::string::npos) {
LOG(INFO) << "Got hit";
std::unique_lock<std::mutex> lock(mutex);
hit = true;
cv.notify_all();
}
}
})
.wait()
.value();
LOG(INFO) << "Triggering subscritpion";
system("touch hit");
LOG(INFO) << "Waiting for hit.";
std::unique_lock<std::mutex> lock(mutex);
auto now = std::chrono::system_clock::now();
if (!cv.wait_until(lock, now + seconds(5), [&]() { return (bool)hit; })) {
LOG(ERROR) << "FAIL: timeout/no hit";
return 1;
}
hit = false;
LOG(INFO) << "Unsubscribing";
c.unsubscribe(sub).wait();
LOG(INFO) << "Trying to falsely trigger subscription";
system("rm hit");
/* sleep override */
sleep(3);
if (hit) {
LOG(ERROR) << "FAIL: still got a hit";
return 1;
}
LOG(INFO) << "PASS: didn't see false trigger after 3 seconds";
LOG(INFO) << "Testing error handling";
Promise<Unit> subErrorCallbackTrigger;
c.subscribe(
query,
current_dir,
eb,
[&](folly::Try<dynamic>&& data) {
if (data.hasException()) {
LOG(INFO) << "Expected subcription error caught";
subErrorCallbackTrigger.setValue();
}
})
.wait()
.value();
c.getConnection().forceEOF();
try {
errorCallbackTrigger.getFuture().within(seconds(1)).wait().value();
} catch(TimedOut& e) {
LOG(ERROR) << "FAIL: did not get callback from global error handler";
return 1;
}
try {
subErrorCallbackTrigger.getFuture().within(seconds(1)).wait().value();
} catch(TimedOut& e) {
LOG(ERROR) << "FAIL: did not get subscription error";
return 1;
}
LOG(INFO) << "PASS: caught expected errors";
return 0;
}
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