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fargate_agent_test.go
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fargate_agent_test.go
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// (c) Copyright IBM Corp. 2021
// (c) Copyright Instana Inc. 2020
//go:build fargate && integration
// +build fargate,integration
package instana_test
import (
"context"
"encoding/json"
"log"
"net/http"
"net/http/httptest"
"os"
"testing"
"time"
instana "github.com/instana/go-sensor"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
var agent *serverlessAgent
func TestMain(m *testing.M) {
teardownEnv := setupAWSFargateEnv()
defer teardownEnv()
teardownSrv := setupMetadataServer()
defer teardownSrv()
defer restoreEnvVarFunc("INSTANA_AGENT_KEY")
os.Setenv("INSTANA_AGENT_KEY", "testkey1")
defer restoreEnvVarFunc("INSTANA_ZONE")
os.Setenv("INSTANA_ZONE", "testzone")
defer restoreEnvVarFunc("INSTANA_TAGS")
os.Setenv("INSTANA_TAGS", "key1=value1,key2")
defer restoreEnvVarFunc("INSTANA_SECRETS")
os.Setenv("INSTANA_SECRETS", "contains-ignore-case:key,password,secret,classified")
defer restoreEnvVarFunc("CLASSIFIED_DATA")
os.Setenv("CLASSIFIED_DATA", "classified")
var err error
agent, err = setupServerlessAgent()
if err != nil {
log.Fatalf("failed to initialize serverless agent: %s", err)
}
instana.InitSensor(instana.DefaultOptions())
os.Exit(m.Run())
}
func TestFargateAgent_SendMetrics(t *testing.T) {
defer agent.Reset()
require.Eventually(t, func() bool { return len(agent.Bundles) > 0 }, 2*time.Second, 500*time.Millisecond)
collected := agent.Bundles[0]
assert.Equal(t, "arn:aws:ecs:us-east-2:012345678910:task/9781c248-0edd-4cdb-9a93-f63cb662a5d3::nginx-curl", collected.Header.Get("X-Instana-Host"))
assert.Equal(t, "testkey1", collected.Header.Get("X-Instana-Key"))
assert.NotEmpty(t, collected.Header.Get("X-Instana-Time"))
var payload struct {
Metrics struct {
Plugins []struct {
Name string `json:"name"`
EntityID string `json:"entityId"`
Data map[string]interface{} `json:"data"`
} `json:"plugins"`
} `json:"metrics"`
}
require.NoError(t, json.Unmarshal(collected.Body, &payload))
pluginData := make(map[string][]serverlessAgentPluginPayload)
for _, plugin := range payload.Metrics.Plugins {
pluginData[plugin.Name] = append(pluginData[plugin.Name], serverlessAgentPluginPayload{plugin.EntityID, plugin.Data})
}
t.Run("AWS ECS Task plugin payload", func(t *testing.T) {
require.Len(t, pluginData["com.instana.plugin.aws.ecs.task"], 1)
d := pluginData["com.instana.plugin.aws.ecs.task"][0]
assert.NotEmpty(t, d.EntityID)
assert.Equal(t, d.Data["taskArn"], d.EntityID)
assert.Equal(t, "testzone", d.Data["instanaZone"])
assert.Equal(t, map[string]interface{}{"key1": "value1", "key2": nil}, d.Data["tags"])
assert.Equal(t, "default", d.Data["clusterArn"])
assert.Equal(t, "nginx", d.Data["taskDefinition"])
assert.Equal(t, "5", d.Data["taskDefinitionVersion"])
})
t.Run("AWS ECS Container plugin payload", func(t *testing.T) {
require.Len(t, pluginData["com.instana.plugin.aws.ecs.container"], 2)
containers := make(map[string]serverlessAgentPluginPayload)
for _, container := range pluginData["com.instana.plugin.aws.ecs.container"] {
containers[container.EntityID] = container
}
t.Run("instrumented", func(t *testing.T) {
d := containers["arn:aws:ecs:us-east-2:012345678910:task/9781c248-0edd-4cdb-9a93-f63cb662a5d3::nginx-curl"]
require.NotEmpty(t, d)
assert.NotEmpty(t, d.EntityID)
require.IsType(t, d.Data["taskArn"], "")
require.IsType(t, d.Data["containerName"], "")
assert.Equal(t, d.Data["taskArn"].(string)+"::"+d.Data["containerName"].(string), d.EntityID)
if assert.NotEmpty(t, d.Data["taskArn"]) {
require.NotEmpty(t, pluginData["com.instana.plugin.aws.ecs.task"])
assert.Equal(t, pluginData["com.instana.plugin.aws.ecs.task"][0].EntityID, d.Data["taskArn"])
}
assert.Equal(t, true, d.Data["instrumented"])
assert.Equal(t, "go", d.Data["runtime"])
assert.Equal(t, "43481a6ce4842eec8fe72fc28500c6b52edcc0917f105b83379f88cac1ff3946", d.Data["dockerId"])
})
t.Run("non-instrumented", func(t *testing.T) {
d := containers["arn:aws:ecs:us-east-2:012345678910:task/9781c248-0edd-4cdb-9a93-f63cb662a5d3::~internal~ecs~pause"]
require.NotEmpty(t, d)
assert.NotEmpty(t, d.EntityID)
require.IsType(t, d.Data["taskArn"], "")
require.IsType(t, d.Data["containerName"], "")
assert.Equal(t, d.Data["taskArn"].(string)+"::"+d.Data["containerName"].(string), d.EntityID)
if assert.NotEmpty(t, d.Data["taskArn"]) {
require.NotEmpty(t, pluginData["com.instana.plugin.aws.ecs.task"])
assert.Equal(t, pluginData["com.instana.plugin.aws.ecs.task"][0].EntityID, d.Data["taskArn"])
}
assert.Nil(t, d.Data["instrumented"])
assert.Empty(t, d.Data["runtime"])
assert.Equal(t, "731a0d6a3b4210e2448339bc7015aaa79bfe4fa256384f4102db86ef94cbbc4c", d.Data["dockerId"])
})
})
t.Run("Docker plugin payload", func(t *testing.T) {
require.Len(t, pluginData["com.instana.plugin.docker"], 2)
containers := make(map[string]serverlessAgentPluginPayload)
for _, container := range pluginData["com.instana.plugin.docker"] {
containers[container.EntityID] = container
}
t.Run("instrumented", func(t *testing.T) {
d := containers["arn:aws:ecs:us-east-2:012345678910:task/9781c248-0edd-4cdb-9a93-f63cb662a5d3::nginx-curl"]
require.NotEmpty(t, d)
assert.NotEmpty(t, d.EntityID)
assert.Equal(t, "43481a6ce4842eec8fe72fc28500c6b52edcc0917f105b83379f88cac1ff3946", d.Data["Id"])
})
t.Run("non-instrumented", func(t *testing.T) {
d := containers["arn:aws:ecs:us-east-2:012345678910:task/9781c248-0edd-4cdb-9a93-f63cb662a5d3::~internal~ecs~pause"]
require.NotEmpty(t, d)
assert.NotEmpty(t, d.EntityID)
assert.Equal(t, "731a0d6a3b4210e2448339bc7015aaa79bfe4fa256384f4102db86ef94cbbc4c", d.Data["Id"])
})
})
t.Run("Process plugin payload", func(t *testing.T) {
require.Len(t, pluginData["com.instana.plugin.process"], 1)
d := pluginData["com.instana.plugin.process"][0]
assert.NotEmpty(t, d.EntityID)
assert.Equal(t, "docker", d.Data["containerType"])
assert.Equal(t, "43481a6ce4842eec8fe72fc28500c6b52edcc0917f105b83379f88cac1ff3946", d.Data["container"])
if assert.IsType(t, map[string]interface{}{}, d.Data["env"]) {
env := d.Data["env"].(map[string]interface{})
assert.Equal(t, os.Getenv("INSTANA_ZONE"), env["INSTANA_ZONE"])
assert.Equal(t, os.Getenv("INSTANA_TAGS"), env["INSTANA_TAGS"])
assert.Equal(t, os.Getenv("INSTANA_AGENT_KEY"), env["INSTANA_AGENT_KEY"])
assert.Equal(t, "<redacted>", env["INSTANA_SECRETS"])
assert.Equal(t, "<redacted>", env["CLASSIFIED_DATA"])
}
})
t.Run("Go process plugin payload", func(t *testing.T) {
require.Len(t, pluginData["com.instana.plugin.golang"], 1)
d := pluginData["com.instana.plugin.golang"][0]
assert.NotEmpty(t, d.EntityID)
require.NotEmpty(t, pluginData["com.instana.plugin.process"])
assert.Equal(t, pluginData["com.instana.plugin.process"][0].EntityID, d.EntityID)
assert.NotEmpty(t, d.Data["metrics"])
})
}
func TestFargateAgent_SendSpans(t *testing.T) {
defer agent.Reset()
sensor := instana.NewSensor("testing")
sp := sensor.Tracer().StartSpan("entry")
sp.SetTag("value", "42")
sp.Finish()
require.Eventually(t, func() bool {
if len(agent.Bundles) == 0 {
return false
}
for _, bundle := range agent.Bundles {
var payload struct {
Spans []json.RawMessage `json:"spans"`
}
json.Unmarshal(bundle.Body, &payload)
if len(payload.Spans) > 0 {
return true
}
}
return false
}, 4*time.Second, 500*time.Millisecond)
var spans []map[string]json.RawMessage
for _, bundle := range agent.Bundles {
var payload struct {
Spans []map[string]json.RawMessage `json:"spans"`
}
require.NoError(t, json.Unmarshal(bundle.Body, &payload), "%s", string(bundle.Body))
spans = append(spans, payload.Spans...)
}
require.Len(t, spans, 1)
assert.JSONEq(t, `{"hl": true, "cp": "aws", "e": "arn:aws:ecs:us-east-2:012345678910:task/9781c248-0edd-4cdb-9a93-f63cb662a5d3::nginx-curl"}`, string(spans[0]["f"]))
}
func TestFargateAgent_FlushSpans(t *testing.T) {
defer agent.Reset()
tracer := instana.NewTracer()
sensor := instana.NewSensorWithTracer(tracer)
sp := sensor.Tracer().StartSpan("entry")
sp.SetTag("value", "42")
sp.Finish()
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
require.NoError(t, tracer.Flush(ctx))
}
func setupAWSFargateEnv() func() {
teardown := restoreEnvVarFunc("AWS_EXECUTION_ENV")
os.Setenv("AWS_EXECUTION_ENV", "AWS_ECS_FARGATE")
return teardown
}
func setupMetadataServer() func() {
mux := http.NewServeMux()
mux.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
http.ServeFile(w, req, "aws/testdata/container_metadata.json")
})
mux.HandleFunc("/task", func(w http.ResponseWriter, req *http.Request) {
http.ServeFile(w, req, "aws/testdata/task_metadata.json")
})
mux.HandleFunc("/task/stats", func(w http.ResponseWriter, req *http.Request) {
http.ServeFile(w, req, "aws/testdata/task_stats.json")
})
srv := httptest.NewServer(mux)
teardown := restoreEnvVarFunc("ECS_CONTAINER_METADATA_URI")
os.Setenv("ECS_CONTAINER_METADATA_URI", srv.URL)
return func() {
teardown()
srv.Close()
}
}