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#include <event2/thread.h>
#include <gflags/gflags.h>
#include <glog/logging.h>
#include <google/protobuf/text_format.h>
#include <openssl/err.h>
#include <fstream>
#include <iostream>
#include <sstream>
#include "log/etcd_consistent_store.h"
#include "log/log_signer.h"
#include "log/logged_entry.h"
#include "log/sqlite_db.h"
#include "log/strict_consistent_store.h"
#include "log/tree_signer.h"
#include "proto/cert_serializer.h"
#include "proto/ct.pb.h"
#include "tools/clustertool.h"
#include "util/etcd.h"
#include "util/init.h"
#include "util/masterelection.h"
#include "util/read_key.h"
#include "util/status.h"
#include "util/thread_pool.h"
namespace libevent = cert_trans::libevent;
using cert_trans::ConsistentStore;
using cert_trans::Database;
using cert_trans::EtcdClient;
using cert_trans::EtcdConsistentStore;
using cert_trans::LoggedEntry;
using cert_trans::MasterElection;
using cert_trans::ReadPrivateKey;
using cert_trans::SQLiteDB;
using cert_trans::SplitHosts;
using cert_trans::StrictConsistentStore;
using cert_trans::ThreadPool;
using cert_trans::TreeSigner;
using cert_trans::UrlFetcher;
using ct::ClusterConfig;
using ct::SignedTreeHead;
using google::protobuf::TextFormat;
using libevent::EventPumpThread;
using std::ifstream;
using std::make_shared;
using std::ostringstream;
using std::shared_ptr;
using std::string;
using std::unique_ptr;
using util::Status;
DEFINE_string(cluster_config, "",
"Path of file containing the cluster config (in ASCII proto "
"format.)");
DEFINE_string(etcd_servers, "",
"Comma separated list of 'hostname:port' of the etcd server(s)");
DEFINE_string(key, "", "PEM-encoded server private key file");
namespace {
const char kDefaultClusterConfig[] =
"minimum_serving_nodes: 2\n"
"minimum_serving_fraction: 0.75\n";
void Usage() {
std::cerr << "Usage:\n"
<< " clustertool [flags] <command> [command opts]\n"
<< "\n"
<< "Commands:\n"
<< " initlog Initialise a new log.\n"
<< " set_config Set/Change a cluster's config.\n";
}
unique_ptr<LogSigner> BuildLogSigner() {
CHECK(!FLAGS_key.empty());
util::StatusOr<EVP_PKEY*> pkey(ReadPrivateKey(FLAGS_key));
CHECK_EQ(pkey.status(), util::Status::OK);
return unique_ptr<LogSigner>(new LogSigner(pkey.ValueOrDie()));
}
unique_ptr<TreeSigner> BuildTreeSigner(Database* db,
ConsistentStore* consistent_store,
LogSigner* log_signer) {
return unique_ptr<TreeSigner>(
new TreeSigner(std::chrono::duration<double>(0), db,
unique_ptr<CompactMerkleTree>(new CompactMerkleTree(
unique_ptr<Sha256Hasher>(new Sha256Hasher))),
consistent_store, log_signer));
}
unique_ptr<MasterElection> BuildAndJoinMasterElection(
const string node_id, const shared_ptr<libevent::Base>& base,
EtcdClient* etcd_client) {
const string kLockDir("/election");
MasterElection* election(
new MasterElection(base, etcd_client, kLockDir, node_id));
election->StartElection();
election->WaitToBecomeMaster();
return unique_ptr<MasterElection>(election);
}
ClusterConfig LoadConfig() {
ClusterConfig cluster_config;
string cluster_config_str;
if (FLAGS_cluster_config.empty()) {
LOG(WARNING) << "Using default ClusterConfig";
cluster_config_str = kDefaultClusterConfig;
} else {
ifstream ifs(FLAGS_cluster_config);
if (!ifs) {
LOG(FATAL) << "Couldn't open " << FLAGS_cluster_config;
}
ostringstream conf_stream;
conf_stream << ifs.rdbuf();
cluster_config_str = conf_stream.str();
}
if (!TextFormat::ParseFromString(cluster_config_str, &cluster_config)) {
LOG(FATAL) << "Couldn't parse ClusterConfig:\n" << cluster_config_str;
}
LOG(INFO) << "Using config:\n" << cluster_config.DebugString();
return cluster_config;
}
} // namespace
int main(int argc, char* argv[]) {
FLAGS_logtostderr = true;
ConfigureSerializerForV1CT();
util::InitCT(&argc, &argv);
if (argc == 1) {
Usage();
return util::error::INVALID_ARGUMENT;
}
CHECK(!FLAGS_etcd_servers.empty());
const shared_ptr<libevent::Base> event_base(make_shared<libevent::Base>());
std::unique_ptr<libevent::EventPumpThread> pump(
new libevent::EventPumpThread(event_base));
ThreadPool pool;
UrlFetcher fetcher(event_base.get(), &pool);
EtcdClient etcd_client(&pool, &fetcher, SplitHosts(FLAGS_etcd_servers));
const string node_id("clustertool");
unique_ptr<MasterElection> election(
BuildAndJoinMasterElection(node_id, event_base, &etcd_client));
ThreadPool internal_pool(4);
StrictConsistentStore consistent_store(
election.get(),
new EtcdConsistentStore(event_base.get(), &internal_pool, &etcd_client,
election.get(), "/root", node_id));
SQLiteDB db("/tmp/clustertooldb");
const string command(argv[1]);
Status status;
if (command == "initlog") {
unique_ptr<LogSigner> log_signer(BuildLogSigner());
unique_ptr<TreeSigner> tree_signer(
BuildTreeSigner(&db, &consistent_store, log_signer.get()));
status = InitLog(LoadConfig(), tree_signer.get(), &consistent_store);
} else if (command == "set_config") {
CHECK(!FLAGS_cluster_config.empty());
status = SetClusterConfig(LoadConfig(), &consistent_store);
} else {
Usage();
}
LOG(INFO) << status;
election->StopElection();
// TODO(alcutter): Watches hang forever even when Cancel()'d, fix that.
exit(status.error_code());
}
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