simple example program to show use case of grafanaclient library

grafanaclient_demo.go

// simple example program to show use case of grafanaclient library:
// https://github.com/adejoux/grafanaclient
// author: Alain Dejoux

package main

import (
	"fmt"
	"log"
	"time"

	"github.com/adejoux/grafanaclient"
)

func main() {

	// account credentials and url to connect to grafana
	user := "admin"
	pass := "admin"
	url := "http://192.168.56.101:3000"

	// create grafana session
	session := grafanaclient.NewSession(user, pass, url)

	// logon on the current session
	logonErr := session.DoLogon()

	if logonErr != nil {
		log.Fatal(logonErr)
	}

	// define a new datasource
	// ds := grafanaclient.DataSource{Name: "testdata",
	// 	Type:     "influxdb",
	// 	Access:   "proxy",
	// 	URL:      "http://192.168.56.101:8086",
	// 	User:     "root",
	// 	Password: "root",
	// 	Database: "testdb",
	// }

	// create the new datasource
	// createErr := session.CreateDataSource(ds)
	//
	// if createErr != nil {
	// 	log.Fatal(createErr)
	// }

	// let's list the existing data sources
	dataSources, listErr := session.GetDataSourceList()
	if listErr != nil {
		log.Fatal(listErr)
	}

	for _, dataSource := range dataSources {
		fmt.Printf("name: %s type: %s url: %s\n", dataSource.Name, dataSource.Type, dataSource.URL)
	}

	// init a new dashboard and allows edition
	dashboard := grafanaclient.Dashboard{Editable: true}

	// let's set the title
	dashboard.Title = "test dashboard"

	// Creating a new row
	textRow := grafanaclient.NewRow()
	textRow.Title = "this row will contains only a text panel"
	textRow.Collapse = true // it will be collapsed by default

	// let's create a simple text panel supporting html format
	textPanel := grafanaclient.Panel{Type: "text", Editable: true, Mode: "html"}

	// Add some content
	textPanel.Content = "<b> Hello World</b>"

	// and add the panel to the row
	textRow.AddPanel(textPanel)

	// add the row to the dashboard itself
	dashboard.AddRow(textRow)

	//create a new row with charts
	graphRow := grafanaclient.NewRow()
	graphRow.Title = "charts"

	// NewPanel will create a graph panel by default
	graphPanel := grafanaclient.NewPanel()

	// set panel title
	graphPanel.Title = "chart1"

	// let's specify the datasource
	graphPanel.DataSource = "testdata"

	// change panel span from default 12 to 6
	graphPanel.Span = 6

	// stack lines with a filling of 1
	graphPanel.Stack = true
	graphPanel.Fill = 1

	// define a target
	target := grafanaclient.NewTarget()

	//specify the measurement to use
	target.Measurement = "CPU_ALL"

	// group stats by name tag values
	target.GroupByTag("name")
	target.GroupByTag("host")

	// filter by host tag
	target.FilterByTag("host", "test")

	// Adding everything
	graphPanel.AddTarget(target)
	graphRow.AddPanel(graphPanel)
	dashboard.AddRow(graphRow)

	// Setup time frame
	dashboard.SetTimeFrame(time.Now().Add(-24*time.Hour), time.Now())

	//upload the dashboard
	session.UploadDashboard(dashboard, true)
}