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/*
* Copyright (c) 2024 Axoflow
* Copyright (c) 2024 Attila Szakacs <attila.szakacs@axoflow.com>
* Copyright (c) 2023 László Várady
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#ifndef LOKI_DEST_HPP
#define LOKI_DEST_HPP
#include "loki-dest.h"
#include "compat/cpp-start.h"
#include "template/templates.h"
#include "stats/stats-cluster-key-builder.h"
#include "logmsg/logmsg.h"
#include "compat/cpp-end.h"
#include "credentials/grpc-credentials-builder.hpp"
#include "metrics/grpc-metrics.hpp"
#include <string>
#include <vector>
#include <memory>
namespace syslogng {
namespace grpc {
namespace loki {
struct Label
{
std::string name;
LogTemplate *value;
Label(std::string name_, LogTemplate *value_)
: name(name_), value(log_template_ref(value_)) {}
Label(const Label &a)
: name(a.name), value(log_template_ref(a.value)) {}
Label &operator=(const Label &a)
{
name = a.name;
log_template_unref(value);
value = log_template_ref(a.value);
return *this;
}
~Label()
{
log_template_unref(value);
}
};
class DestinationDriver final
{
public:
DestinationDriver(LokiDestDriver *s);
~DestinationDriver();
bool init();
bool deinit();
const gchar *format_persist_name();
const gchar *format_stats_key(StatsClusterKeyBuilder *kb);
GrpcClientCredentialsBuilderW *get_credentials_builder_wrapper();
void add_label(std::string name, LogTemplate *value);
LogTemplateOptions &get_template_options()
{
return this->template_options;
}
void set_url(std::string u)
{
this->url = u;
}
void set_message_template_ref(LogTemplate *msg)
{
log_template_unref(this->message);
this->message = msg;
}
bool set_timestamp(const char *t)
{
if (strcasecmp(t, "current") == 0)
this->timestamp = LM_TS_PROCESSED;
else if (strcasecmp(t, "received") == 0)
this->timestamp = LM_TS_RECVD;
else if (strcasecmp(t, "msg") == 0)
this->timestamp = LM_TS_STAMP;
else
return false;
return true;
}
void set_keepalive_time(int t)
{
this->keepalive_time = t;
}
void set_keepalive_timeout(int t)
{
this->keepalive_timeout = t;
}
void set_keepalive_max_pings(int p)
{
this->keepalive_max_pings_without_data = p;
}
void set_tenant_id(std::string tid)
{
this->tenant_id = tid;
}
void add_extra_channel_arg(std::string name, long value)
{
this->int_extra_channel_args.push_back(std::pair<std::string, long> {name, value});
}
void add_extra_channel_arg(std::string name, std::string value)
{
this->string_extra_channel_args.push_back(std::pair<std::string, std::string> {name, value});
}
void add_header(std::string name, std::string value)
{
std::transform(name.begin(), name.end(), name.begin(), ::tolower);
this->headers.push_back(std::pair<std::string, std::string> {name, value});
}
const std::string &get_url()
{
return this->url;
}
private:
friend class DestinationWorker;
private:
LokiDestDriver *super;
LogTemplateOptions template_options;
std::string url;
std::string tenant_id;
LogTemplate *message = nullptr;
std::vector<Label> labels;
LogMessageTimeStamp timestamp;
syslogng::grpc::ClientCredentialsBuilder credentials_builder;
GrpcClientCredentialsBuilderW credentials_builder_wrapper;
int keepalive_time;
int keepalive_timeout;
int keepalive_max_pings_without_data;
std::list<std::pair<std::string, long>> int_extra_channel_args;
std::list<std::pair<std::string, std::string>> string_extra_channel_args;
std::list<std::pair<std::string, std::string>> headers;
DestDriverMetrics metrics;
};
}
}
}
syslogng::grpc::loki::DestinationDriver *loki_dd_get_cpp(LokiDestDriver *self);
#endif
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