Add ActiveMQ input plugin (influxdata#2689)

README.md

@@ -127,6 +127,7 @@ configuration options.
 
 ## Input Plugins
 
+* [activemq](./plugins/inputs/activemq)
 * [aerospike](./plugins/inputs/aerospike)
 * [amqp_consumer](./plugins/inputs/amqp_consumer) (rabbitmq)
 * [apache](./plugins/inputs/apache)

plugins/inputs/activemq/README.md

@@ -0,0 +1,86 @@
+# Telegraf Input Plugin: ActiveMQ
+
+This plugin gather queues, topics & subscribers metrics using ActiveMQ Console API.
+
+### Configuration:
+
+```toml
+# Description
+[[inputs.activemq]]
+  ## Required ActiveMQ Endpoint
+  # server = "192.168.50.10"
+
+  ## Required ActiveMQ port
+  # port = 8161
+
+  ## Credentials for basic HTTP authentication
+  # username = "admin"
+  # password = "admin"
+
+  ## Required ActiveMQ webadmin root path
+  # webadmin = "admin"
+
+  ## Maximum time to receive response.
+  # response_timeout = "5s"
+
+  ## Optional TLS Config
+  # tls_ca = "/etc/telegraf/ca.pem"
+  # tls_cert = "/etc/telegraf/cert.pem"
+  # tls_key = "/etc/telegraf/key.pem"
+  ## Use TLS but skip chain & host verification
+```
+
+### Measurements & Fields:
+
+Every effort was made to preserve the names based on the XML response from the ActiveMQ Console API.
+
+- activemq_queues:
+    - size
+    - consumer_count
+    - enqueue_count
+    - dequeue_count
+  - activemq_topics:
+    - size
+    - consumer_count
+    - enqueue_count
+    - dequeue_count
+  - subscribers_metrics:
+    - pending_queue_size
+    - dispatched_queue_size
+    - dispatched_counter
+    - enqueue_counter
+    - dequeue_counter
+
+### Tags:
+
+- activemq_queues:
+    - name
+    - source
+    - port
+- activemq_topics:
+    - name
+    - source
+    - port
+- activemq_subscribers:
+    - client_id
+    - subscription_name
+    - connection_id
+    - destination_name
+    - selector
+    - active
+    - source
+    - port
+
+### Example Output:
+
+```
+$ ./telegraf -config telegraf.conf -input-filter activemq -test
+activemq_queues,name=sandra,host=88284b2fe51b,source=localhost,port=8161 consumer_count=0i,enqueue_count=0i,dequeue_count=0i,size=0i 1492610703000000000
+activemq_queues,name=Test,host=88284b2fe51b,source=localhost,port=8161 dequeue_count=0i,size=0i,consumer_count=0i,enqueue_count=0i 1492610703000000000
+activemq_topics,name=ActiveMQ.Advisory.MasterBroker\ ,host=88284b2fe51b,source=localhost,port=8161 size=0i,consumer_count=0i,enqueue_count=1i,dequeue_count=0i 1492610703000000000
+activemq_topics,host=88284b2fe51b,name=AAA\,source=localhost,port=8161  size=0i,consumer_count=1i,enqueue_count=0i,dequeue_count=0i 1492610703000000000
+activemq_topics,name=ActiveMQ.Advisory.Topic\,source=localhost,port=8161 ,host=88284b2fe51b enqueue_count=1i,dequeue_count=0i,size=0i,consumer_count=0i 1492610703000000000
+activemq_topics,name=ActiveMQ.Advisory.Queue\,source=localhost,port=8161 ,host=88284b2fe51b size=0i,consumer_count=0i,enqueue_count=2i,dequeue_count=0i 1492610703000000000
+activemq_topics,name=AAAA\ ,host=88284b2fe51b,source=localhost,port=8161 consumer_count=0i,enqueue_count=0i,dequeue_count=0i,size=0i 1492610703000000000
+activemq_subscribers,connection_id=NOTSET,destination_name=AAA,,source=localhost,port=8161,selector=AA,active=no,host=88284b2fe51b,client_id=AAA,subscription_name=AAA pending_queue_size=0i,dispatched_queue_size=0i,dispatched_counter=0i,enqueue_counter=0i,dequeue_counter=0i 1492610703000000000
+```

plugins/inputs/activemq/activemq.go

@@ -0,0 +1,261 @@
+package activemq
+
+import (
+	"encoding/xml"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"strconv"
+	"time"
+
+	"strings"
+
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/internal"
+	"github.com/influxdata/telegraf/internal/tls"
+	"github.com/influxdata/telegraf/plugins/inputs"
+)
+
+type ActiveMQ struct {
+	Server          string `json:"server"`
+	Port            int    `json:"port"`
+	Username        string `json:"username"`
+	Password        string `json:"password"`
+	Webadmin        string `json:"webadmin"`
+	ResponseTimeout internal.Duration
+	tls.ClientConfig
+
+	client *http.Client
+}
+
+type Topics struct {
+	XMLName    xml.Name `xml:"topics"`
+	TopicItems []Topic  `xml:"topic"`
+}
+
+type Topic struct {
+	XMLName xml.Name `xml:"topic"`
+	Name    string   `xml:"name,attr"`
+	Stats   Stats    `xml:"stats"`
+}
+
+type Subscribers struct {
+	XMLName         xml.Name     `xml:"subscribers"`
+	SubscriberItems []Subscriber `xml:"subscriber"`
+}
+
+type Subscriber struct {
+	XMLName          xml.Name `xml:"subscriber"`
+	ClientId         string   `xml:"clientId,attr"`
+	SubscriptionName string   `xml:"subscriptionName,attr"`
+	ConnectionId     string   `xml:"connectionId,attr"`
+	DestinationName  string   `xml:"destinationName,attr"`
+	Selector         string   `xml:"selector,attr"`
+	Active           string   `xml:"active,attr"`
+	Stats            Stats    `xml:"stats"`
+}
+
+type Queues struct {
+	XMLName    xml.Name `xml:"queues"`
+	QueueItems []Queue  `xml:"queue"`
+}
+
+type Queue struct {
+	XMLName xml.Name `xml:"queue"`
+	Name    string   `xml:"name,attr"`
+	Stats   Stats    `xml:"stats"`
+}
+
+type Stats struct {
+	XMLName             xml.Name `xml:"stats"`
+	Size                int      `xml:"size,attr"`
+	ConsumerCount       int      `xml:"consumerCount,attr"`
+	EnqueueCount        int      `xml:"enqueueCount,attr"`
+	DequeueCount        int      `xml:"dequeueCount,attr"`
+	PendingQueueSize    int      `xml:"pendingQueueSize,attr"`
+	DispatchedQueueSize int      `xml:"dispatchedQueueSize,attr"`
+	DispatchedCounter   int      `xml:"dispatchedCounter,attr"`
+	EnqueueCounter      int      `xml:"enqueueCounter,attr"`
+	DequeueCounter      int      `xml:"dequeueCounter,attr"`
+}
+
+const (
+	QUEUES_STATS      = "queues"
+	TOPICS_STATS      = "topics"
+	SUBSCRIBERS_STATS = "subscribers"
+)
+
+var sampleConfig = `
+  ## Required ActiveMQ Endpoint
+  # server = "192.168.50.10"
+
+  ## Required ActiveMQ port
+  # port = 8161
+  
+  ## Credentials for basic HTTP authentication
+  # username = "admin"
+  # password = "admin"
+
+  ## Required ActiveMQ webadmin root path
+  # webadmin = "admin"
+
+  ## Maximum time to receive response.
+  # response_timeout = "5s"
+  
+  ## Optional TLS Config
+  # tls_ca = "/etc/telegraf/ca.pem"
+  # tls_cert = "/etc/telegraf/cert.pem"
+  # tls_key = "/etc/telegraf/key.pem"
+  ## Use TLS but skip chain & host verification
+  `
+
+func (a *ActiveMQ) Description() string {
+	return "Gather ActiveMQ metrics"
+}
+
+func (a *ActiveMQ) SampleConfig() string {
+	return sampleConfig
+}
+
+func (a *ActiveMQ) createHttpClient() (*http.Client, error) {
+	tlsCfg, err := a.ClientConfig.TLSConfig()
+	if err != nil {
+		return nil, err
+	}
+
+	client := &http.Client{
+		Transport: &http.Transport{
+			TLSClientConfig: tlsCfg,
+		},
+		Timeout: a.ResponseTimeout.Duration,
+	}
+
+	return client, nil
+}
+
+func (a *ActiveMQ) GetMetrics(keyword string) ([]byte, error) {
+	if a.ResponseTimeout.Duration < time.Second {
+		a.ResponseTimeout.Duration = time.Second * 5
+	}
+
+	if a.client == nil {
+		client, err := a.createHttpClient()
+		if err != nil {
+			return nil, err
+		}
+		a.client = client
+	}
+	url := fmt.Sprintf("http://%s:%d/%s/xml/%s.jsp", a.Server, a.Port, a.Webadmin, keyword)
+
+	req, err := http.NewRequest("GET", url, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	req.SetBasicAuth(a.Username, a.Password)
+	resp, err := a.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+
+	defer resp.Body.Close()
+	return ioutil.ReadAll(resp.Body)
+}
+
+func (a *ActiveMQ) GatherQueuesMetrics(acc telegraf.Accumulator, queues Queues) {
+	for _, queue := range queues.QueueItems {
+		records := make(map[string]interface{})
+		tags := make(map[string]string)
+
+		tags["name"] = strings.TrimSpace(queue.Name)
+		tags["source"] = a.Server
+		tags["port"] = strconv.Itoa(a.Port)
+
+		records["size"] = queue.Stats.Size
+		records["consumer_count"] = queue.Stats.ConsumerCount
+		records["enqueue_count"] = queue.Stats.EnqueueCount
+		records["dequeue_count"] = queue.Stats.DequeueCount
+
+		acc.AddFields("activemq_queues", records, tags)
+	}
+}
+
+func (a *ActiveMQ) GatherTopicsMetrics(acc telegraf.Accumulator, topics Topics) {
+	for _, topic := range topics.TopicItems {
+		records := make(map[string]interface{})
+		tags := make(map[string]string)
+
+		tags["name"] = topic.Name
+		tags["source"] = a.Server
+		tags["port"] = strconv.Itoa(a.Port)
+
+		records["size"] = topic.Stats.Size
+		records["consumer_count"] = topic.Stats.ConsumerCount
+		records["enqueue_count"] = topic.Stats.EnqueueCount
+		records["dequeue_count"] = topic.Stats.DequeueCount
+
+		acc.AddFields("activemq_topics", records, tags)
+	}
+}
+
+func (a *ActiveMQ) GatherSubscribersMetrics(acc telegraf.Accumulator, subscribers Subscribers) {
+	for _, subscriber := range subscribers.SubscriberItems {
+		records := make(map[string]interface{})
+		tags := make(map[string]string)
+
+		tags["client_id"] = subscriber.ClientId
+		tags["subscription_name"] = subscriber.SubscriptionName
+		tags["connection_id"] = subscriber.ConnectionId
+		tags["destination_name"] = subscriber.DestinationName
+		tags["selector"] = subscriber.Selector
+		tags["active"] = subscriber.Active
+		tags["source"] = a.Server
+		tags["port"] = strconv.Itoa(a.Port)
+
+		records["pending_queue_size"] = subscriber.Stats.PendingQueueSize
+		records["dispatched_queue_size"] = subscriber.Stats.DispatchedQueueSize
+		records["dispatched_counter"] = subscriber.Stats.DispatchedCounter
+		records["enqueue_counter"] = subscriber.Stats.EnqueueCounter
+		records["dequeue_counter"] = subscriber.Stats.DequeueCounter
+
+		acc.AddFields("activemq_subscribers", records, tags)
+	}
+}
+
+func (a *ActiveMQ) Gather(acc telegraf.Accumulator) error {
+	dataQueues, err := a.GetMetrics(QUEUES_STATS)
+	queues := Queues{}
+	err = xml.Unmarshal(dataQueues, &queues)
+	if err != nil {
+		return err
+	}
+
+	dataTopics, err := a.GetMetrics(TOPICS_STATS)
+	topics := Topics{}
+	err = xml.Unmarshal(dataTopics, &topics)
+	if err != nil {
+		return err
+	}
+
+	dataSubscribers, err := a.GetMetrics(SUBSCRIBERS_STATS)
+	subscribers := Subscribers{}
+	err = xml.Unmarshal(dataSubscribers, &subscribers)
+	if err != nil {
+		return err
+	}
+
+	a.GatherQueuesMetrics(acc, queues)
+	a.GatherTopicsMetrics(acc, topics)
+	a.GatherSubscribersMetrics(acc, subscribers)
+
+	return nil
+}
+
+func init() {
+	inputs.Add("activemq", func() telegraf.Input {
+		return &ActiveMQ{
+			Server: "localhost",
+			Port:   8161,
+		}
+	})
+}