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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "cf-handler.h"
#include <vespa/defaults.h>
#include <vespa/config/common/configsystem.h>
#include <vespa/config/common/exceptions.h>
#include <vespa/log/log.h>
LOG_SETUP(".cf-handler");
CfHandler::CfHandler() : _subscriber() {}
CfHandler::~CfHandler()
{
}
void
CfHandler::subscribe(const std::string & configId, uint64_t timeoutMS)
{
_handle = _subscriber.subscribe<LogforwarderConfig>(configId, timeoutMS);
}
namespace {
std::string
cfFilePath() {
std::string path = vespa::Defaults::underVespaHome("var/db/vespa/splunk");
DIR *dp = opendir(path.c_str());
if (dp == NULL) {
if (errno != ENOTDIR || mkdir(path.c_str() != 0)) {
perror(path.c_str());
}
}
if (dp != NULL) closedir(dp);
path += "/deploymentclient.conf;
return path;
}
}
void
CfHandler::doConfigure()
{
std::unique_ptr<LogforwarderConfig> cfg(_handle->getConfig());
const LogforwarderConfig& config(*cfg);
std::string path = cfFilePath();
std::string tmpPath = path + ".new";
FILE *fp = fopen(tmpPath.c_str(), "w");
if (fp == NULL) return;
fprintf(fp, "[deployment-client]\n");
fprintf(fp, "clientName = %s\n", config.clientName.c_str());
fprintf(fp, "\n");
fprintf(fp, "[target-broker:deploymentServer]\n");
fprintf(fp, "targetUri = %s\n", config.deploymentServer.c_str());
fclose(fp);
rename(tmpPath.c_str(), path.c_str());
}
void
CfHandler::check()
{
if (_subscriber.nextConfig(0)) {
doConfigure();
}
}
constexpr uint64_t CONFIG_TIMEOUT_MS = 30 * 1000;
void
CfHandler::start(const char *configId)
{
LOG(debug, "Reading configuration with id '%s'", configId);
try {
subscribe(configId, CONFIG_TIMEOUT_MS);
doConfigure();
} catch (config::ConfigTimeoutException & ex) {
LOG(warning, "Timout getting config, please check your setup. Will exit and restart: %s", ex.getMessage().c_str());
exit(EXIT_FAILURE);
} catch (config::InvalidConfigException& ex) {
LOG(error, "Fatal: Invalid configuration, please check your setup: %s", ex.getMessage().c_str());
exit(EXIT_FAILURE);
} catch (config::ConfigRuntimeException& ex) {
LOG(error, "Fatal: Could not get config, please check your setup: %s", ex.getMessage().c_str());
exit(EXIT_FAILURE);
}
}
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