Add tomcat input plugin (#3112)

plugins/inputs/tomcat/tomcat_test.go

@@ -0,0 +1,95 @@
+package tomcat
+
+import (
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/influxdata/telegraf/testutil"
+
+	"github.com/stretchr/testify/require"
+)
+
+var tomcatStatus = `<?xml version="1.0" encoding="UTF-8"?>
+<?xml-stylesheet type="text/xsl" href="/manager/xform.xsl" ?>
+<status>
+  <jvm>
+    <memory free='17909336' total='58195968' max='620756992'/>
+    <memorypool name='PS Eden Space' type='Heap memory' usageInit='8912896' usageCommitted='35651584' usageMax='230686720' usageUsed='25591384'/>
+    <memorypool name='PS Old Gen' type='Heap memory' usageInit='21495808' usageCommitted='21495808' usageMax='465567744' usageUsed='13663040'/>
+    <memorypool name='PS Survivor Space' type='Heap memory' usageInit='1048576' usageCommitted='1048576' usageMax='1048576' usageUsed='1032208'/>
+    <memorypool name='Code Cache' type='Non-heap memory' usageInit='2555904' usageCommitted='2555904' usageMax='50331648' usageUsed='1220096'/>
+    <memorypool name='PS Perm Gen' type='Non-heap memory' usageInit='22020096' usageCommitted='22020096' usageMax='174063616' usageUsed='17533952'/>
+  </jvm>
+  <connector name='"ajp-apr-8009"'>
+    <threadInfo maxThreads="200" currentThreadCount="0" currentThreadsBusy="0"/>
+    <requestInfo maxTime="0" processingTime="0" requestCount="0" errorCount="0" bytesReceived="0" bytesSent="0"/>
+    <workers>
+    </workers>
+  </connector>
+  <connector name='"http-apr-8080"'>
+    <threadInfo maxThreads="200" currentThreadCount="5" currentThreadsBusy="1"/>
+    <requestInfo maxTime="68" processingTime="88" requestCount="2" errorCount="1" bytesReceived="0" bytesSent="9286"/>
+    <workers>
+      <worker stage="S" requestProcessingTime="4" requestBytesSent="0" requestBytesReceived="0" remoteAddr="127.0.0.1" virtualHost="127.0.0.1" method="GET" currentUri="/manager/status/all" currentQueryString="XML=true" protocol="HTTP/1.1"/>
+    </workers>
+  </connector>
+</status>`
+
+func TestHTTPTomcat(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+		fmt.Fprintln(w, tomcatStatus)
+	}))
+	defer ts.Close()
+
+	tc := Tomcat{
+		URL:      ts.URL,
+		Username: "tomcat",
+		Password: "s3cret",
+	}
+
+	var acc testutil.Accumulator
+	err := tc.Gather(&acc)
+	require.NoError(t, err)
+
+	// tomcat_jvm_memory
+	jvmMemoryFields := map[string]interface{}{
+		"free":  int64(17909336),
+		"total": int64(58195968),
+		"max":   int64(620756992),
+	}
+	acc.AssertContainsFields(t, "tomcat_jvm_memory", jvmMemoryFields)
+
+	// tomcat_jvm_memorypool
+	jvmMemoryPoolFields := map[string]interface{}{
+		"init":      int64(22020096),
+		"committed": int64(22020096),
+		"max":       int64(174063616),
+		"used":      int64(17533952),
+	}
+	jvmMemoryPoolTags := map[string]string{
+		"name": "PS Perm Gen",
+		"type": "Non-heap memory",
+	}
+	acc.AssertContainsTaggedFields(t, "tomcat_jvm_memorypool", jvmMemoryPoolFields, jvmMemoryPoolTags)
+
+	// tomcat_connector
+	connectorFields := map[string]interface{}{
+		"max_threads":          int64(200),
+		"current_thread_count": int64(5),
+		"current_threads_busy": int64(1),
+		"max_time":             int(68),
+		"processing_time":      int(88),
+		"request_count":        int(2),
+		"error_count":          int(1),
+		"bytes_received":       int64(0),
+		"bytes_sent":           int64(9286),
+	}
+	connectorTags := map[string]string{
+		"name": "http-apr-8080",
+	}
+	acc.AssertContainsTaggedFields(t, "tomcat_connector", connectorFields, connectorTags)
+
+}