feat: add new groundwork output plugin

docs/LICENSE_OF_DEPENDENCIES.md

@@ -115,6 +115,7 @@ following works:
 - github.com/gosnmp/gosnmp [BSD 2-Clause "Simplified" License](https://github.com/gosnmp/gosnmp/blob/master/LICENSE)
 - github.com/grid-x/modbus [BSD 3-Clause "New" or "Revised" License](https://github.com/grid-x/modbus/blob/master/LICENSE)
 - github.com/grid-x/serial [MIT License](https://github.com/grid-x/serial/blob/master/LICENSE)
+- github.com/gwos/tcg/sdk [MIT License](https://github.com/gwos/tcg/blob/master/LICENSE)
 - github.com/hailocab/go-hostpool [MIT License](https://github.com/hailocab/go-hostpool/blob/master/LICENSE)
 - github.com/harlow/kinesis-consumer [MIT License](https://github.com/harlow/kinesis-consumer/blob/master/MIT-LICENSE)
 - github.com/hashicorp/consul/api [Mozilla Public License 2.0](https://github.com/hashicorp/consul/blob/master/LICENSE)

go.mod

@@ -133,6 +133,7 @@ require (
 	github.com/grid-x/modbus v0.0.0-20210224155242-c4a3d042e99b
 	github.com/grid-x/serial v0.0.0-20191104121038-e24bc9bf6f08 // indirect
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0 // indirect
+	github.com/gwos/tcg/sdk v0.0.0-20211130162655-32ad77586ccf
 	github.com/hailocab/go-hostpool v0.0.0-20160125115350-e80d13ce29ed // indirect
 	github.com/harlow/kinesis-consumer v0.3.6-0.20210911031324-5a873d6e9fec
 	github.com/hashicorp/consul/api v1.9.1
@@ -141,7 +142,7 @@ require (
 	github.com/hashicorp/go-immutable-radix v1.2.0 // indirect
 	github.com/hashicorp/go-msgpack v0.5.5 // indirect
 	github.com/hashicorp/go-rootcerts v1.0.2 // indirect
-	github.com/hashicorp/go-uuid v1.0.2 // indirect
+	github.com/hashicorp/go-uuid v1.0.2
 	github.com/hashicorp/golang-lru v0.5.4 // indirect
 	github.com/hashicorp/serf v0.9.5 // indirect
 	github.com/influxdata/go-syslog/v3 v3.0.0

go.sum

@@ -1145,6 +1145,8 @@ github.com/grpc-ecosystem/grpc-gateway v1.14.5/go.mod h1:UJ0EZAp832vCd54Wev9N1BM
 github.com/grpc-ecosystem/grpc-gateway v1.16.0 h1:gmcG1KaJ57LophUzW0Hy8NmPhnMZb4M0+kPpLofRdBo=
 github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
 github.com/grpc-ecosystem/grpc-opentracing v0.0.0-20180507213350-8e809c8a8645/go.mod h1:6iZfnjpejD4L/4DwD7NryNaJyCQdzwWwH2MWhCA90Kw=
+github.com/gwos/tcg/sdk v0.0.0-20211130162655-32ad77586ccf h1:xSjgqa6SiBaSC4sTC4HniWRLww2vbl3u0KyMUYeryJI=
+github.com/gwos/tcg/sdk v0.0.0-20211130162655-32ad77586ccf/go.mod h1:OjlJNRXwlEjznVfU3YtLWH8FyM7KWHUevXDI47UeZeM=
 github.com/hailocab/go-hostpool v0.0.0-20160125115350-e80d13ce29ed h1:5upAirOpQc1Q53c0bnx2ufif5kANL7bfZWcc6VJWJd8=
 github.com/hailocab/go-hostpool v0.0.0-20160125115350-e80d13ce29ed/go.mod h1:tMWxXQ9wFIaZeTI9F+hmhFiGpFmhOHzyShyFUhRm0H4=
 github.com/harlow/kinesis-consumer v0.3.6-0.20210911031324-5a873d6e9fec h1:ya+kv1eNnd5QhcHuaj5g5eMq5Ra3VCNaPY2ZI7Aq91o=

plugins/outputs/all/all.go

@@ -21,6 +21,7 @@ import (
 	_ "github.com/influxdata/telegraf/plugins/outputs/file"
 	_ "github.com/influxdata/telegraf/plugins/outputs/graphite"
 	_ "github.com/influxdata/telegraf/plugins/outputs/graylog"
+	_ "github.com/influxdata/telegraf/plugins/outputs/groundwork"
 	_ "github.com/influxdata/telegraf/plugins/outputs/health"
 	_ "github.com/influxdata/telegraf/plugins/outputs/http"
 	_ "github.com/influxdata/telegraf/plugins/outputs/influxdb"

plugins/outputs/groundwork/README.md

@@ -0,0 +1,38 @@
+# GroundWork Output Plugin
+
+This plugin writes to a [GroundWork Monitor][1] instance. Plugin only supports GW8+
+
+[1]: https://www.gwos.com/product/groundwork-monitor/
+
+## Configuration
+
+```toml
+[[outputs.groundwork]]
+  ## URL of your groundwork instance.
+  url = "https://groundwork.example.com"
+
+  ## Agent uuid for GroundWork API Server.
+  agent_id = ""
+
+  ## Username and password to access GroundWork API.
+  username = ""
+  password = ""
+
+  ## Default display name for the host with services(metrics).
+  # default_host = "telegraf"
+
+  ## Default service state.
+  # default_service_state = "SERVICE_OK"
+
+  ## The name of the tag that contains the hostname.
+  # resource_tag = "host"
+```
+
+## List of tags used by the plugin
+
+* service  - to define the name of the service you want to monitor.
+* status   - to define the status of the service.
+* message  - to provide any message you want.
+* unitType - to use in monitoring contexts(subset of The Unified Code for Units of Measure standard). Supported types: "1", "%cpu", "KB", "GB", "MB".
+* warning  - to define warning threshold value.
+* critical - to define critical threshold value.

plugins/outputs/groundwork/groundwork.go

@@ -0,0 +1,289 @@
+package groundwork
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"strconv"
+
+	"github.com/gwos/tcg/sdk/clients"
+	"github.com/gwos/tcg/sdk/transit"
+	"github.com/hashicorp/go-uuid"
+
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/plugins/outputs"
+)
+
+const sampleConfig = `
+  ## URL of your groundwork instance.
+  url = "https://groundwork.example.com"
+
+  ## Agent uuid for GroundWork API Server.
+  agent_id = ""
+
+  ## Username and password to access GroundWork API.
+  username = ""
+  password = ""
+
+  ## Default display name for the host with services(metrics).
+  # default_host = "telegraf"
+
+  ## Default service state.
+  # default_service_state = "SERVICE_OK"
+
+  ## The name of the tag that contains the hostname.
+  # resource_tag = "host"
+`
+
+type Groundwork struct {
+	Server              string          `toml:"url"`
+	AgentID             string          `toml:"agent_id"`
+	Username            string          `toml:"username"`
+	Password            string          `toml:"password"`
+	DefaultHost         string          `toml:"default_host"`
+	DefaultServiceState string          `toml:"default_service_state"`
+	ResourceTag         string          `toml:"resource_tag"`
+	Log                 telegraf.Logger `toml:"-"`
+	client              clients.GWClient
+}
+
+func (g *Groundwork) SampleConfig() string {
+	return sampleConfig
+}
+
+func (g *Groundwork) Init() error {
+	if g.Server == "" {
+		return errors.New("no 'url' provided")
+	}
+	if g.AgentID == "" {
+		return errors.New("no 'agent_id' provided")
+	}
+	if g.Username == "" {
+		return errors.New("no 'username' provided")
+	}
+	if g.Password == "" {
+		return errors.New("no 'password' provided")
+	}
+	if g.DefaultHost == "" {
+		return errors.New("no 'default_host' provided")
+	}
+	if g.ResourceTag == "" {
+		return errors.New("no 'resource_tag' provided")
+	}
+	if !validStatus(g.DefaultServiceState) {
+		return errors.New("invalid 'default_service_state' provided")
+	}
+
+	g.client = clients.GWClient{
+		AppName: "telegraf",
+		AppType: "TELEGRAF",
+		GWConnection: &clients.GWConnection{
+			HostName:           g.Server,
+			UserName:           g.Username,
+			Password:           g.Password,
+			IsDynamicInventory: true,
+		},
+	}
+	return nil
+}
+
+func (g *Groundwork) Connect() error {
+	err := g.client.Connect()
+	if err != nil {
+		return fmt.Errorf("could not log in: %v", err)
+	}
+	return nil
+}
+
+func (g *Groundwork) Close() error {
+	err := g.client.Disconnect()
+	if err != nil {
+		return fmt.Errorf("could not log out: %v", err)
+	}
+	return nil
+}
+
+func (g *Groundwork) Write(metrics []telegraf.Metric) error {
+	resourceToServicesMap := make(map[string][]transit.DynamicMonitoredService)
+	for _, metric := range metrics {
+		resource, service, err := g.parseMetric(metric)
+		if err != nil {
+			g.Log.Errorf("%v", err)
+			continue
+		}
+		resourceToServicesMap[resource] = append(resourceToServicesMap[resource], *service)
+	}
+
+	var resources []transit.DynamicMonitoredResource
+	for resourceName, services := range resourceToServicesMap {
+		resources = append(resources, transit.DynamicMonitoredResource{
+			BaseResource: transit.BaseResource{
+				BaseTransitData: transit.BaseTransitData{
+					Name: resourceName,
+					Type: transit.Host,
+				},
+			},
+			Status:        transit.HostUp,
+			LastCheckTime: transit.NewTimestamp(),
+			Services:      services,
+		})
+	}
+
+	traceToken, err := uuid.GenerateUUID()
+	if err != nil {
+		return err
+	}
+	requestJSON, err := json.Marshal(transit.DynamicResourcesWithServicesRequest{
+		Context: &transit.TracerContext{
+			AppType:    "TELEGRAF",
+			AgentID:    g.AgentID,
+			TraceToken: traceToken,
+			TimeStamp:  transit.NewTimestamp(),
+			Version:    transit.ModelVersion,
+		},
+		Resources: resources,
+		Groups:    nil,
+	})
+
+	if err != nil {
+		return err
+	}
+
+	_, err = g.client.SendResourcesWithMetrics(context.Background(), requestJSON)
+	if err != nil {
+		return fmt.Errorf("error while sending: %v", err)
+	}
+
+	return nil
+}
+
+func (g *Groundwork) Description() string {
+	return "Send telegraf metrics to GroundWork Monitor"
+}
+
+func init() {
+	outputs.Add("groundwork", func() telegraf.Output {
+		return &Groundwork{
+			ResourceTag:         "host",
+			DefaultHost:         "telegraf",
+			DefaultServiceState: string(transit.ServiceOk),
+		}
+	})
+}
+
+func (g *Groundwork) parseMetric(metric telegraf.Metric) (string, *transit.DynamicMonitoredService, error) {
+	resource := g.DefaultHost
+	if value, present := metric.GetTag(g.ResourceTag); present {
+		resource = value
+	}
+
+	service := metric.Name()
+	if value, present := metric.GetTag("service"); present {
+		service = value
+	}
+
+	status := g.DefaultServiceState
+	value, statusPresent := metric.GetTag("status")
+	if validStatus(value) {
+		status = value
+	}
+
+	message, _ := metric.GetTag("message")
+
+	unitType := string(transit.UnitCounter)
+	if value, present := metric.GetTag("unitType"); present {
+		unitType = value
+	}
+
+	var critical float64
+	value, criticalPresent := metric.GetTag("critical")
+	if criticalPresent {
+		if s, err := strconv.ParseFloat(value, 64); err == nil {
+			critical = s
+		}
+	}
+
+	var warning float64
+	value, warningPresent := metric.GetTag("warning")
+	if warningPresent {
+		if s, err := strconv.ParseFloat(value, 64); err == nil {
+			warning = s
+		}
+	}
+
+	lastCheckTime := transit.NewTimestamp()
+	lastCheckTime.Time = metric.Time()
+	serviceObject := transit.DynamicMonitoredService{
+		BaseTransitData: transit.BaseTransitData{
+			Name:  service,
+			Type:  transit.Service,
+			Owner: resource,
+		},
+		Status:           transit.MonitorStatus(status),
+		LastCheckTime:    lastCheckTime,
+		LastPlugInOutput: message,
+		Metrics:          nil,
+	}
+
+	for _, value := range metric.FieldList() {
+		var thresholds []transit.ThresholdValue
+		if warningPresent {
+			thresholds = append(thresholds, transit.ThresholdValue{
+				SampleType: transit.Warning,
+				Label:      value.Key + "_wn",
+				Value: &transit.TypedValue{
+					ValueType:   transit.DoubleType,
+					DoubleValue: warning,
+				},
+			})
+		}
+		if criticalPresent {
+			thresholds = append(thresholds, transit.ThresholdValue{
+				SampleType: transit.Critical,
+				Label:      value.Key + "_cr",
+				Value: &transit.TypedValue{
+					ValueType:   transit.DoubleType,
+					DoubleValue: critical,
+				},
+			})
+		}
+
+		typedValue := new(transit.TypedValue)
+		err := typedValue.FromInterface(value.Value)
+		if err != nil {
+			return "", nil, err
+		}
+
+		serviceObject.Metrics = append(serviceObject.Metrics, transit.TimeSeries{
+			MetricName: value.Key,
+			SampleType: transit.Value,
+			Interval: &transit.TimeInterval{
+				EndTime: lastCheckTime,
+			},
+			Value:      typedValue,
+			Unit:       transit.UnitType(unitType),
+			Thresholds: &thresholds,
+		})
+	}
+
+	if !statusPresent {
+		serviceStatus, err := transit.CalculateServiceStatus(&serviceObject.Metrics)
+		if err != nil {
+			g.Log.Infof("could not calculate service status, reverting to default_service_state: %v", err)
+			serviceObject.Status = transit.MonitorStatus(g.DefaultServiceState)
+		}
+		serviceObject.Status = serviceStatus
+	}
+
+	return resource, &serviceObject, nil
+}
+
+func validStatus(status string) bool {
+	switch transit.MonitorStatus(status) {
+	case transit.ServiceOk, transit.ServiceWarning, transit.ServicePending, transit.ServiceScheduledCritical,
+		transit.ServiceUnscheduledCritical, transit.ServiceUnknown:
+		return true
+	}
+	return false
+}