Status KinesisLogForwarder::setUp() {
// Set up client
Status s = makeAWSClient<Aws::Kinesis::KinesisClient>(client_);
if (!s.ok()) {
return s;
}
shard_id_ = getHostIdentifier();
if (FLAGS_aws_kinesis_stream.empty()) {
return Status(1, "Stream name must be specified with --aws_kinesis_stream");
}
// Make sure we can connect to designated stream
Aws::Kinesis::Model::ListStreamsRequest r;
auto result = client_->ListStreams(r).GetResult();
std::vector<std::string> stream_names = result.GetStreamNames();
if (std::find(stream_names.begin(),
stream_names.end(),
FLAGS_aws_kinesis_stream) == stream_names.end()) {
return Status(1,
"Could not find Kinesis stream: " + FLAGS_aws_kinesis_stream);
}
VLOG(1) << "Kinesis logging initialized with stream: "
<< FLAGS_aws_kinesis_stream;
return Status(0);
}
Status KinesisLogForwarder::setUp() {
Status s = BufferedLogForwarder::setUp();
if (!s.ok()) {
return s;
}
// Set up client
s = makeAWSClient<Aws::Kinesis::KinesisClient>(client_);
if (!s.ok()) {
return s;
}
partition_key_ = getHostIdentifier();
if (FLAGS_aws_kinesis_stream.empty()) {
return Status(1, "Stream name must be specified with --aws_kinesis_stream");
}
// Make sure we can connect to designated stream
Aws::Kinesis::Model::DescribeStreamRequest r;
r.SetStreamName(FLAGS_aws_kinesis_stream);
auto outcome = client_->DescribeStream(r);
if (!outcome.IsSuccess()) {
return Status(1,
"Could not find Kinesis stream: " + FLAGS_aws_kinesis_stream);
}
VLOG(1) << "Kinesis logging initialized with stream: "
<< FLAGS_aws_kinesis_stream;
return Status(0);
}
void launchQuery(const std::string& name, const ScheduledQuery& query) {
// Execute the scheduled query and create a named query object.
VLOG(1) << "Executing query: " << query.query;
auto sql = (FLAGS_enable_monitor) ? monitor(name, query) : SQL(query.query);
if (!sql.ok()) {
LOG(ERROR) << "Error executing query (" << query.query
<< "): " << sql.getMessageString();
return;
}
// Fill in a host identifier fields based on configuration or availability.
std::string ident;
auto status = getHostIdentifier(ident);
if (!status.ok() || ident.empty()) {
ident = "<unknown>";
}
// A query log item contains an optional set of differential results or
// a copy of the most-recent execution alongside some query metadata.
QueryLogItem item;
item.name = name;
item.identifier = ident;
item.time = osquery::getUnixTime();
item.calendar_time = osquery::getAsciiTime();
if (query.options.count("snapshot") && query.options.at("snapshot")) {
// This is a snapshot query, emit results with a differential or state.
item.snapshot_results = std::move(sql.rows());
logSnapshotQuery(item);
return;
}
// Create a database-backed set of query results.
auto dbQuery = Query(name, query);
DiffResults diff_results;
// Add this execution's set of results to the database-tracked named query.
// We can then ask for a differential from the last time this named query
// was executed by exact matching each row.
status = dbQuery.addNewResults(sql.rows(), diff_results);
if (!status.ok()) {
LOG(ERROR) << "Error adding new results to database: " << status.what();
return;
}
if (diff_results.added.size() == 0 && diff_results.removed.size() == 0) {
// No diff results or events to emit.
return;
}
VLOG(1) << "Found results for query (" << name << ") for host: " << ident;
item.results = diff_results;
status = logQueryLogItem(item);
if (!status.ok()) {
LOG(ERROR) << "Error logging the results of query (" << query.query
<< "): " << status.toString();
}
}
TEST_F(LoggerTests, test_logger_log_status) {
std::string warning = "Logger test is generating a warning status (2)";
auto now = getUnixTime();
// This will be printed to stdout.
LOG(WARNING) << warning;
// The second warning status will be sent to the logger plugin.
EXPECT_EQ(1U, LoggerTests::statuses_logged);
EXPECT_EQ(O_WARNING, LoggerTests::last_status.severity);
EXPECT_GT(LoggerTests::last_status.line, 0U);
EXPECT_EQ(warning, LoggerTests::last_status.message);
EXPECT_GE(now, LoggerTests::last_status.time);
EXPECT_EQ(getHostIdentifier(), LoggerTests::last_status.identifier);
}
Status KinesisLogForwarder::setUp() {
Status s = BufferedLogForwarder::setUp();
if (!s.ok()) {
return s;
}
// Set up client
s = makeAWSClient<Aws::Kinesis::KinesisClient>(client_);
if (!s.ok()) {
return s;
}
partition_key_ = getHostIdentifier();
if (FLAGS_aws_kinesis_stream.empty()) {
return Status(1, "Stream name must be specified with --aws_kinesis_stream");
}
VLOG(1) << "Kinesis logging initialized with stream: "
<< FLAGS_aws_kinesis_stream;
return Status(0);
}
inline void launchQuery(const std::string& name, const ScheduledQuery& query) {
// Execute the scheduled query and create a named query object.
LOG(INFO) << "Executing scheduled query " << name << ": " << query.query;
runDecorators(DECORATE_ALWAYS);
auto sql = monitor(name, query);
if (!sql.ok()) {
LOG(ERROR) << "Error executing scheduled query " << name << ": "
<< sql.getMessageString();
return;
}
// Fill in a host identifier fields based on configuration or availability.
std::string ident = getHostIdentifier();
// A query log item contains an optional set of differential results or
// a copy of the most-recent execution alongside some query metadata.
QueryLogItem item;
item.name = name;
item.identifier = ident;
item.time = osquery::getUnixTime();
item.epoch = FLAGS_schedule_epoch;
item.calendar_time = osquery::getAsciiTime();
getDecorations(item.decorations);
if (query.options.count("snapshot") && query.options.at("snapshot")) {
// This is a snapshot query, emit results with a differential or state.
item.snapshot_results = std::move(sql.rows());
logSnapshotQuery(item);
return;
}
// Create a database-backed set of query results.
auto dbQuery = Query(name, query);
// Comparisons and stores must include escaped data.
sql.escapeResults();
Status status;
DiffResults diff_results;
// Add this execution's set of results to the database-tracked named query.
// We can then ask for a differential from the last time this named query
// was executed by exact matching each row.
if (!FLAGS_events_optimize || !sql.eventBased()) {
status = dbQuery.addNewResults(
sql.rows(), item.epoch, item.counter, diff_results);
if (!status.ok()) {
std::string line =
"Error adding new results to database: " + status.what();
LOG(ERROR) << line;
// If the database is not available then the daemon cannot continue.
Initializer::requestShutdown(EXIT_CATASTROPHIC, line);
}
} else {
diff_results.added = std::move(sql.rows());
}
if (diff_results.added.empty() && diff_results.removed.empty()) {
// No diff results or events to emit.
return;
}
VLOG(1) << "Found results for query: " << name;
item.results = diff_results;
if (query.options.count("removed") && !query.options.at("removed")) {
item.results.removed.clear();
}
status = logQueryLogItem(item);
if (!status.ok()) {
// If log directory is not available, then the daemon shouldn't continue.
std::string error = "Error logging the results of query: " + name + ": " +
status.toString();
LOG(ERROR) << error;
Initializer::requestShutdown(EXIT_CATASTROPHIC, error);
}
}