ConnectionManager.cc

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#include <cstring>
#include <cstdio>
 
#include "OnlineDB/Oracle/interface/Oracle.h"
#include "CaloOnlineTools/HcalOnlineDb/interface/ConnectionManager.h"
#include <cctype>
 
ConnectionManager::ConnectionManager() : env(nullptr), conn(nullptr) {}
 
static const std::string keyFile("/nfshome0/hcalsw/.ReadOMDSKey");
 
static void clean(char* s) {
  for (int x = strlen(s) - 1; x >= 0; x--) {
    if (isspace(s[x]))
      s[x] = 0;
  }
}
 
bool ConnectionManager::connect() {
  if (env != nullptr)
    return true;
  std::string username, password, database;
 
  char s[100];
  FILE* f = fopen(keyFile.c_str(), "r");
  s[0] = 0;
  fgets(s, 100, f);
  clean(s);
  username = s;
  s[0] = 0;
  fgets(s, 100, f);
  clean(s);
  password = s;
  s[0] = 0;
  fgets(s, 100, f);
  clean(s);
  database = s;
  fclose(f);
 
  //  printf("'%s' '%s' '%s'\n",username.c_str(),password.c_str(),database.c_str());
  try {
    env = oracle::occi::Environment::createEnvironment(oracle::occi::Environment::DEFAULT);
    conn = env->createConnection(username, password, database);
  } catch (...) {
    return false;
  }
  return true;
}
oracle::occi::Statement* ConnectionManager::getStatement(const std::string& query) {
  if (env == nullptr)
    return nullptr;
  return conn->createStatement(query);
}
void ConnectionManager::disconnect() {
  if (env == nullptr)
    return;
  env->terminateConnection(conn);
  oracle::occi::Environment::terminateEnvironment(env);
  env = nullptr;
  conn = nullptr;
}