yats.git

ref: 0f5549e69c64ceaef6d08f96aabbc01a1ba71606

client/main.go


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/**
 * Yats - yats
 *
 * This file is licensed under the Affero General Public License version 3 or
 * later. See the COPYING file.
 *
 * @author Paolo Lulli <kevwe.com>
 * @copyright Paolo Lulli 2024
 */
package main

import (
	"encoding/base64"
	"encoding/json"
	"fmt"
	"os"
	"time"
	"yats/config"

	flag "github.com/spf13/pflag"
)

type YatsClient struct {
	config config.ClientConfiguration
}

func main() {
	var configPath string

	if len(os.Args) == 1 {
		fmt.Printf("Usage: \n\n%s --help | -h\n", os.Args[0])
		os.Exit(1)
	}

	configPath = os.Getenv("HOME") + "/.yats-client.json"

	cfg := config.GetClientConfig(configPath)
	var yatsClient = YatsClient{config: cfg}

	generatePki := flag.BoolP("csr", "c", false, "create CSR")

	sourceOption := flag.StringP("source", "s", "", "source application")

	isShowPermsOption := flag.BoolP("show-permissions", "S", false, "show user permissions")

	fromOption := flag.Int64("from", 0, "from tstamp")
	toOption := flag.Int64("to", 0, "to tstamp")

	timestampOption := flag.Int64("timestamp", 0, "timeStamp")

	writeEvent := flag.StringP("write-event", "E", "", "write event with name")
	writeMetric := flag.StringP("write-metric", "M", "", "write metric with name")
	metricValue := flag.StringP("metric-value", "v", "", "metric value")
	writePosition := flag.StringP("write-position", "P", "", "write position name")

	listEvents := flag.BoolP("list-events", "e", false, "list events")
	listMetrics := flag.StringP("list-metrics", "m", "", "list metrics with name")
	listPositions := flag.StringP("list-positions", "p", "", "list positions with name")

	longitudeOption := flag.Float64P("longitude", "o", 0, "longitude")
	latitudeOption := flag.Float64P("latitude", "a", 0, "latitude")

	sinceSeconds := flag.BoolP("sec", "", false, "seconds ago")
	sinceMinutes := flag.BoolP("min", "", false, "minutes ago")
	sinceHours := flag.BoolP("hour", "", false, "hours ago")
	sinceDays := flag.BoolP("day", "", false, "days ago")
	sinceYears := flag.BoolP("year", "", false, "years ago")

	reformatOutput := flag.BoolP("format", "f", false, "format output")
	logOutput := flag.BoolP("value-only", "l", false, "log value only output")
	decodeBase64Output := flag.BoolP("base64-decode", "b", false, "decode base64 output")

	flag.Parse()

	var fromTimestamp int64
	var toTimestamp int64

	if *fromOption != 0 {
		fromTimestamp = calculateCutDate(*fromOption, sinceSeconds, sinceMinutes, sinceHours, sinceDays, sinceYears)
	} else {
		fromTimestamp = 0
	}

	if *toOption != 0 {
		toTimestamp = calculateCutDate(*toOption, sinceSeconds, sinceMinutes, sinceHours, sinceDays, sinceYears)
	} else {
		toTimestamp = 0
	}

	if *isShowPermsOption {
		listResponse, err := yatsClient.PermissionsList()
		if err == nil {
			fmt.Printf("%s", listResponse)
		} else {
			fmt.Println(err)
		}
		os.Exit(0)
	}

	if *generatePki {
		yatsClient.CreateCsr()
		os.Exit(0)
	}

	if "" != *writeEvent {
		saveEventResponse, err := yatsClient.EventSave(*writeEvent, *timestampOption)
		if err == nil {
			fmt.Printf("%s", saveEventResponse)
		} else {
			fmt.Println(err)
		}
		os.Exit(0)
	}

	if "" != *writeMetric {
		listResponse, err := yatsClient.MetricSave(*writeMetric, *metricValue, *timestampOption)
		if err == nil {
			fmt.Printf("%s", listResponse)
		} else {
			fmt.Println(err)
		}
		os.Exit(0)
	}

	if "" != *writePosition {
		savePositionResponse, err := yatsClient.PositionSave(*writePosition, *latitudeOption, *longitudeOption, *timestampOption)
		if err == nil {
			fmt.Printf("%s", savePositionResponse)
		} else {
			fmt.Println(err)
		}
		os.Exit(0)
	}

	if *listEvents {
		listEvents := yatsClient.EventList(*sourceOption, fromTimestamp, toTimestamp)
		if *reformatOutput {
			dataJson, errDataPortion := getDataJson(listEvents)
			if errDataPortion {
				fmt.Printf("Could not parse data attribute: %v", errDataPortion)
				return
			}

			var eventListModel []EventModel
			err := json.Unmarshal(dataJson, &eventListModel)

			if err == nil {
				for _, event := range eventListModel {
					fmt.Printf("%d %s\n", event.Etime, event.Name)
				}
			} else {
				fmt.Println(err)
			}
		} else {
			fmt.Printf("%s", listEvents)
		}
		os.Exit(0)
	}

	if "" != *listMetrics {
		listResponse, err := yatsClient.MetricList(*sourceOption, *listMetrics, fromTimestamp, toTimestamp)

		if err == nil {
			if *reformatOutput {

				dataJson, errDataPortion := getDataJson(listResponse)
				if errDataPortion {
					fmt.Printf("Could not parse data attribute: %v", errDataPortion)
					return
				}

				var metricListModel []MetricModel
				err := json.Unmarshal(dataJson, &metricListModel)

				if err == nil {
					for _, metric := range metricListModel {
						fmt.Printf("%d %s=%s\n", metric.Mtime, metric.Name, metric.Value)
					}
				} else {
					fmt.Println(err)
				}
				os.Exit(0)
			}
			if *logOutput {
				dataJson, errDataPortion := getDataJson(listResponse)
				if errDataPortion {
					fmt.Printf("Could not parse data attribute: %v", errDataPortion)
					return
				}

				var metricListModel []MetricModel
				err := json.Unmarshal(dataJson, &metricListModel)

				if err == nil {
					for _, metric := range metricListModel {
						if *decodeBase64Output {
							decodedBytes, err := base64.StdEncoding.DecodeString(metric.Value)
							if err != nil {
								fmt.Println("Error decoding string:", err)
								return
							}
							fmt.Println(string(decodedBytes))
						} else {
							fmt.Printf("%s\n", metric.Value)
						}
					}
				} else {
					fmt.Println(err)
				}
				os.Exit(0)
			}

			fmt.Printf("%s", listResponse)

		} else {
			fmt.Println(err)
		}
		os.Exit(0)
	}

	if "" != *listPositions {
		listResponse := yatsClient.PositionList(*sourceOption, fromTimestamp, toTimestamp)
		fmt.Printf("%s", listResponse)
		os.Exit(0)
	}
}

func getDataJson(list string) ([]byte, bool) {
	var result map[string]interface{}
	json.Unmarshal([]byte(list), &result)
	innerData := result["data"]

	dataJson, er := json.Marshal(innerData)
	if er != nil {
		fmt.Printf("Parsing response: %v", er)
		return nil, true
	}
	return dataJson, false
}

func calculateCutDate(ts int64, sinceSeconds *bool, sinceMinutes *bool, sinceHours *bool, sinceDays *bool, sinceYears *bool) int64 {
	if 0 != ts {
		if *sinceSeconds {
			return time.Now().Unix() - ts
		}
		if *sinceMinutes {
			return time.Now().Unix() - ts*60
		}
		if *sinceHours {
			return time.Now().Unix() - ts*60*60
		}
		if *sinceDays {
			return time.Now().Unix() - ts*60*60*24
		}
		if *sinceYears {
			return time.Now().Unix() - ts*60*60*24*365
		}
	}
	return ts
}