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rabbitmq_test.go
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package rabbitmq
import (
"fmt"
"net/http"
"net/http/httptest"
"testing"
"io/ioutil"
"github.com/influxdata/telegraf/testutil"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestRabbitMQGeneratesMetrics(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
var jsonFilePath string
switch r.URL.Path {
case "/api/overview":
jsonFilePath = "testdata/overview.json"
case "/api/nodes":
jsonFilePath = "testdata/nodes.json"
case "/api/queues":
jsonFilePath = "testdata/queues.json"
case "/api/exchanges":
jsonFilePath = "testdata/exchanges.json"
case "/api/healthchecks/node/rabbit@vagrant-ubuntu-trusty-64":
jsonFilePath = "testdata/healthchecks.json"
case "/api/federation-links":
jsonFilePath = "testdata/federation-links.json"
case "/api/nodes/rabbit@vagrant-ubuntu-trusty-64/memory":
jsonFilePath = "testdata/memory.json"
default:
panic("Cannot handle request")
}
data, err := ioutil.ReadFile(jsonFilePath)
if err != nil {
panic(fmt.Sprintf("could not read from data file %s", jsonFilePath))
}
w.Write(data)
}))
defer ts.Close()
r := &RabbitMQ{
URL: ts.URL,
}
acc := &testutil.Accumulator{}
err := acc.GatherError(r.Gather)
require.NoError(t, err)
overviewMetrics := map[string]interface{}{
"messages": 5,
"messages_ready": 32,
"messages_unacked": 27,
"messages_acked": 5246,
"messages_delivered": 5234,
"messages_delivered_get": 3333,
"messages_published": 5258,
"channels": 44,
"connections": 44,
"consumers": 65,
"exchanges": 43,
"queues": 62,
"clustering_listeners": 2,
"amqp_listeners": 2,
"return_unroutable": 10,
"return_unroutable_rate": 3.3,
}
compareMetrics(t, overviewMetrics, acc, "rabbitmq_overview")
queuesMetrics := map[string]interface{}{
"consumers": 3,
"consumer_utilisation": 1.0,
"memory": 143776,
"message_bytes": 3,
"message_bytes_ready": 4,
"message_bytes_unacked": 5,
"message_bytes_ram": 6,
"message_bytes_persist": 7,
"messages": 44,
"messages_ready": 32,
"messages_unack": 44,
"messages_ack": 3457,
"messages_ack_rate": 9.9,
"messages_deliver": 22222,
"messages_deliver_rate": 333.4,
"messages_deliver_get": 3457,
"messages_deliver_get_rate": 0.2,
"messages_publish": 3457,
"messages_publish_rate": 11.2,
"messages_redeliver": 33,
"messages_redeliver_rate": 2.5,
"idle_since": "2015-11-01 8:22:14",
}
compareMetrics(t, queuesMetrics, acc, "rabbitmq_queue")
nodeMetrics := map[string]interface{}{
"disk_free": 3776,
"disk_free_limit": 50000000,
"disk_free_alarm": 0,
"fd_total": 1024,
"fd_used": 63,
"mem_limit": 2503,
"mem_used": 159707080,
"mem_alarm": 1,
"proc_total": 1048576,
"proc_used": 783,
"run_queue": 0,
"sockets_total": 829,
"sockets_used": 45,
"uptime": 7464827,
"running": 1,
"health_check_status": 1,
"mnesia_disk_tx_count": 16,
"mnesia_ram_tx_count": 296,
"mnesia_disk_tx_count_rate": 1.1,
"mnesia_ram_tx_count_rate": 2.2,
"gc_num": 57280132,
"gc_bytes_reclaimed": 2533,
"gc_num_rate": 274.2,
"gc_bytes_reclaimed_rate": 16490856.3,
"io_read_avg_time": 983,
"io_read_avg_time_rate": 88.77,
"io_read_bytes": 1111,
"io_read_bytes_rate": 99.99,
"io_write_avg_time": 134,
"io_write_avg_time_rate": 4.32,
"io_write_bytes": 823,
"io_write_bytes_rate": 32.8,
"mem_connection_readers": 1234,
"mem_connection_writers": 5678,
"mem_connection_channels": 1133,
"mem_connection_other": 2840,
"mem_queue_procs": 2840,
"mem_queue_slave_procs": 0,
"mem_plugins": 1755976,
"mem_other_proc": 23056584,
"mem_metrics": 196536,
"mem_mgmt_db": 491272,
"mem_mnesia": 115600,
"mem_other_ets": 2121872,
"mem_binary": 418848,
"mem_msg_index": 42848,
"mem_code": 25179322,
"mem_atom": 1041593,
"mem_other_system": 14741981,
"mem_allocated_unused": 38208528,
"mem_reserved_unallocated": 0,
"mem_total": 83025920,
}
compareMetrics(t, nodeMetrics, acc, "rabbitmq_node")
exchangeMetrics := map[string]interface{}{
"messages_publish_in": 3678,
"messages_publish_in_rate": 3.2,
"messages_publish_out": 3677,
"messages_publish_out_rate": 5.1,
}
compareMetrics(t, exchangeMetrics, acc, "rabbitmq_exchange")
federationLinkMetrics := map[string]interface{}{
"acks_uncommitted": 1,
"consumers": 2,
"messages_unacknowledged": 3,
"messages_uncommitted": 4,
"messages_unconfirmed": 5,
"messages_confirm": 67,
"messages_publish": 890,
"messages_return_unroutable": 1,
}
compareMetrics(t, federationLinkMetrics, acc, "rabbitmq_federation")
}
func compareMetrics(t *testing.T, expectedMetrics map[string]interface{},
accumulator *testutil.Accumulator, measurementKey string) {
measurement, exist := accumulator.Get(measurementKey)
assert.True(t, exist, "There is measurement %s", measurementKey)
assert.Equal(t, len(expectedMetrics), len(measurement.Fields))
for metricName, metricValue := range expectedMetrics {
actualMetricValue := measurement.Fields[metricName]
if accumulator.HasStringField(measurementKey, metricName) {
assert.Equal(t, metricValue, actualMetricValue,
"Metric name: %s", metricName)
} else {
assert.InDelta(t, metricValue, actualMetricValue, 0e5,
"Metric name: %s", metricName)
}
}
}