Getting Started

This short guide explains how to get started with PSYGIG Triage SDK. Before you can start instrumenting your applications, you need to download and install the latest version of the SDK.

PSYGIG Triage SDK Download/Installation Guide

Quick Start - using psymon

Without modifying your existing source code, you can instantly add instrumentation and crash reporting capabilities to your application by using the psymon script to run your program. For example:

psymon -c "/path/to/your/app --arg1 --arg2 --arg3"

By default, psymon enables all instrumentation capabilities. To enable selective instrumentation, specify the instrumentation class with the appropriate option.

See psymon man page for a complete list of options.

Sample JSON output generated by psymon

注釈

psymon is a work-in-progress. Please if you are interested in beta-testing this feature.

Advanced Setup - Building your application with libpsygig

The rich feature set of the PSYGIG Triage SDK can be fully exploited via the PSYGIG Triage SDK API. The API can be accessed by including a single header file and linking to the libpsygig shared library.

Basic example: Collecting system resource metrics

This example enables period polling of system resource metrics and saves the data to a JSON file.

basic-example source code

#include "psygigsdk.h"

int main(int argc, char **argv)
{
    psygig_cfg              cfg;  // psygig agent configuration
    psygig_agent_handle     pah;  // handle to psygig agent
    psygig_sink_cfg         sink; // output sink configuration

    int rc;

    const char* RESULTS_DIR = "results"; // directory to store the output JSON file
    const char* RESULTS_BASE = "sys"; // base filename of the output JSON file

    // Initialize agent
    rc = psygig_agent_init(&pah, &cfg); // Ignore return code for simplicity sake

    // Add a file sink for logging metrics to JSON
    sink.type = PSYGIG_SINK_FILE;
    sink.format = PSYGIG_DATA_FORMAT_JSON;
    strcpy(sink.file.dir,RESULTS_DIR);
    strcpy(sink.file.basename,RESULTS_BASE);
    rc = psygig_agent_add_sink(pah, &sink);  // Ignore return code for simplicity sake

    // Enable polling of system resources every 500ms
    rc = psygig_metric_enable_poll_system_resources(pah, 500);

    // Let it run for 15 seconds
    startts = time(NULL);
    endts = startts + 15;

    while (time(NULL) < endts)
    {
        millisleep(1000);
    }

    // We are done. Cleanup PSYGIG Agent.
    rc = psygig_agent_cleanup(&pah);

    return 0;
}

Building basic-example using gcc

The compiler must be able to find the psygigsdk.h header and the libpsygig shared library. With GCC, use the -I and -L options respectively to achieve this.

For basic-example, the compilation command is:

gcc -I /opt/psyiage/include -L /opt/psyiage/lib -lpsygig basic-example.c -o basic-example

_{Assuming PSYGIG Triage SDK was installed under /opt/psyiage}

Building basic-example using cmake

A better alternative for building programs using PSYGIG Triage SDK is to use cmake, especially if you are developing for several platforms. Assuming the following folder structure:

basic-example\
   |- src\
   |   |- basic-example.c
   |- CMakeLists.txt

CMakeLists.txt file

cmake_minimum_required(VERSION 3.1)
project(basic-example)

# Add the source files to the binary
add_executable(basic-example src/basic-example.c)

# Add the psygigsdk.h folder to include path
target_include_directories(basic-example PRIVATE /opt/psyiage/include)

# Link the libpsygig.so folder to the binary
target_link_libraries(basic-example /opt/psyiage/lib/libpsygig.so)

_{Assuming PSYGIG Triage SDK was installed under /opt/psyiage}

The following sequence of commands create a directory for building (avoid building in the source folder), builds basic-example with cmake and then runs the program:

mkdir build
cd build
cmake ..
make
./basic-example