void write_log()

in common/daemon.h [92:127]

• 35 lines of code
• 4 McCabe index (conditional complexity)

    void write_log( const char* message )
    {
        const int max_log_len = 10 * 1024 * 1024; // 10 MB

        int fd = open( "/var/credentials-fetcher/logging/credentials-fetcher.log", O_RDWR );
        struct stat st;
        if ( fstat( fd, &st ) < 0 )
        {
            perror( "fstat" );
            close( fd );
            FILE* fp = fopen( "/var/credentials-fetcher/logging/credentials-fetcher.log", "w" );
            fclose( fp );
            fd = open( "/var/credentials-fetcher/logging/credentials-fetcher.log", O_RDWR );
        }
        else if ( st.st_size > max_log_len )
        {
            close( fd );
            FILE* fp = fopen( "/var/credentials-fetcher/logging/credentials-fetcher.log", "w" );
            fclose( fp );
            fd = open( "/var/credentials-fetcher/logging/credentials-fetcher.log", O_RDWR );
        }
        FILE* fp = fdopen( fd, "a+" );
        if ( fp != NULL )
        {
            time_t current_time = time( NULL );
            struct tm* local_time = localtime( &current_time );
            char time_buffer[80];
            strftime( time_buffer, 80, "%Y-%m-%d %H:%M:%S", local_time );
            fprintf( fp, "%s: %s \n", time_buffer, message );
            fclose( fp );
        }
        std::string log_buf = std::string( message );
        log_ring_buffer[log_buffer_count] = log_buf;
        log_buffer_count = ( log_buffer_count + 1 ) % MAX_LOG_BUFFER_COUNT;
        close( fd );
    }