mirror of https://github.com/status-im/consul.git
435 lines
12 KiB
Go
435 lines
12 KiB
Go
package agent
|
|
|
|
import (
|
|
"context"
|
|
"crypto/x509"
|
|
"fmt"
|
|
"net/http"
|
|
"net/http/httptest"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/stretchr/testify/require"
|
|
|
|
"github.com/hashicorp/consul/agent/rpc/middleware"
|
|
"github.com/hashicorp/consul/lib/retry"
|
|
"github.com/hashicorp/consul/sdk/testutil"
|
|
"github.com/hashicorp/consul/testrpc"
|
|
"github.com/hashicorp/consul/tlsutil"
|
|
)
|
|
|
|
func skipIfShortTesting(t *testing.T) {
|
|
if testing.Short() {
|
|
t.Skip("too slow for testing.Short")
|
|
}
|
|
}
|
|
|
|
func recordPromMetrics(t *testing.T, a *TestAgent, respRec *httptest.ResponseRecorder) {
|
|
t.Helper()
|
|
req, err := http.NewRequest("GET", "/v1/agent/metrics?format=prometheus", nil)
|
|
require.NoError(t, err, "Failed to generate new http request.")
|
|
|
|
_, err = a.srv.AgentMetrics(respRec, req)
|
|
require.NoError(t, err, "Failed to serve agent metrics")
|
|
|
|
}
|
|
|
|
func assertMetricExists(t *testing.T, respRec *httptest.ResponseRecorder, metric string) {
|
|
if respRec.Body.String() == "" {
|
|
t.Fatalf("Response body is empty.")
|
|
}
|
|
|
|
if !strings.Contains(respRec.Body.String(), metric) {
|
|
t.Fatalf("Could not find the metric \"%s\" in the /v1/agent/metrics response", metric)
|
|
}
|
|
}
|
|
|
|
// assertMetricExistsWithLabels looks in the prometheus metrics response for the metric name and all the labels. eg:
|
|
// new_rpc_metrics_rpc_server_call{errored="false",method="Status.Ping",request_type="unknown",rpc_type="net/rpc"}
|
|
func assertMetricExistsWithLabels(t *testing.T, respRec *httptest.ResponseRecorder, metric string, labelNames []string) {
|
|
if respRec.Body.String() == "" {
|
|
t.Fatalf("Response body is empty.")
|
|
}
|
|
|
|
if !strings.Contains(respRec.Body.String(), metric) {
|
|
t.Fatalf("Could not find the metric \"%s\" in the /v1/agent/metrics response", metric)
|
|
}
|
|
|
|
foundAllLabels := false
|
|
metrics := respRec.Body.String()
|
|
for _, line := range strings.Split(metrics, "\n") {
|
|
// skip help lines
|
|
if len(line) < 1 || line[0] == '#' {
|
|
continue
|
|
}
|
|
|
|
if strings.Contains(line, metric) {
|
|
hasAllLabels := true
|
|
for _, labelName := range labelNames {
|
|
if !strings.Contains(line, labelName) {
|
|
hasAllLabels = false
|
|
break
|
|
}
|
|
}
|
|
|
|
if hasAllLabels {
|
|
foundAllLabels = true
|
|
|
|
// done!
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
if !foundAllLabels {
|
|
t.Fatalf("Could not verify that all named labels \"%s\" exist for the metric \"%s\" in the /v1/agent/metrics response", strings.Join(labelNames, ", "), metric)
|
|
}
|
|
}
|
|
|
|
func assertLabelWithValueForMetricExistsNTime(t *testing.T, respRec *httptest.ResponseRecorder, metric string, label string, labelValue string, occurrences int) {
|
|
if respRec.Body.String() == "" {
|
|
t.Fatalf("Response body is empty.")
|
|
}
|
|
|
|
if !strings.Contains(respRec.Body.String(), metric) {
|
|
t.Fatalf("Could not find the metric \"%s\" in the /v1/agent/metrics response", metric)
|
|
}
|
|
|
|
metrics := respRec.Body.String()
|
|
// don't look at _sum or _count or other aggregates
|
|
metricTarget := metric + "{"
|
|
// eg method="Status.Ping"
|
|
labelWithValueTarget := label + "=" + "\"" + labelValue + "\""
|
|
|
|
matchesFound := 0
|
|
for _, line := range strings.Split(metrics, "\n") {
|
|
// skip help lines
|
|
if len(line) < 1 || line[0] == '#' {
|
|
continue
|
|
}
|
|
|
|
if strings.Contains(line, metricTarget) {
|
|
if strings.Contains(line, labelWithValueTarget) {
|
|
matchesFound++
|
|
}
|
|
}
|
|
}
|
|
|
|
if matchesFound < occurrences {
|
|
t.Fatalf("Only found metric \"%s\" %d times. Wanted %d times.", metric, matchesFound, occurrences)
|
|
}
|
|
}
|
|
|
|
func assertMetricExistsWithValue(t *testing.T, respRec *httptest.ResponseRecorder, metric string, value string) {
|
|
if respRec.Body.String() == "" {
|
|
t.Fatalf("Response body is empty.")
|
|
}
|
|
|
|
// eg "consul_autopilot_healthy NaN"
|
|
target := metric + " " + value
|
|
|
|
if !strings.Contains(respRec.Body.String(), target) {
|
|
t.Fatalf("Could not find the metric \"%s\" with value \"%s\" in the /v1/agent/metrics response", metric, value)
|
|
}
|
|
}
|
|
|
|
func assertMetricsWithLabelIsNonZero(t *testing.T, respRec *httptest.ResponseRecorder, label, labelValue string) {
|
|
if respRec.Body.String() == "" {
|
|
t.Fatalf("Response body is empty.")
|
|
}
|
|
|
|
metrics := respRec.Body.String()
|
|
labelWithValueTarget := label + "=" + "\"" + labelValue + "\""
|
|
|
|
for _, line := range strings.Split(metrics, "\n") {
|
|
if len(line) < 1 || line[0] == '#' {
|
|
continue
|
|
}
|
|
|
|
if strings.Contains(line, labelWithValueTarget) {
|
|
s := strings.SplitN(line, " ", 2)
|
|
if s[1] == "0" {
|
|
t.Fatalf("Metric with label provided \"%s:%s\" has the value 0", label, labelValue)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func assertMetricNotExists(t *testing.T, respRec *httptest.ResponseRecorder, metric string) {
|
|
if respRec.Body.String() == "" {
|
|
t.Fatalf("Response body is empty.")
|
|
}
|
|
|
|
if strings.Contains(respRec.Body.String(), metric) {
|
|
t.Fatalf("Didn't expect to find the metric \"%s\" in the /v1/agent/metrics response", metric)
|
|
}
|
|
}
|
|
|
|
// TestAgent_OneTwelveRPCMetrics test for the 1.12 style RPC metrics. These are the labeled metrics coming from
|
|
// agent.rpc.middleware.interceptors package.
|
|
func TestAgent_OneTwelveRPCMetrics(t *testing.T) {
|
|
skipIfShortTesting(t)
|
|
// This test cannot use t.Parallel() since we modify global state, ie the global metrics instance
|
|
|
|
t.Run("Check that 1.12 rpc metrics are not emitted by default.", func(t *testing.T) {
|
|
metricsPrefix := "new_rpc_metrics"
|
|
hcl := fmt.Sprintf(`
|
|
telemetry = {
|
|
prometheus_retention_time = "5s"
|
|
disable_hostname = true
|
|
metrics_prefix = "%s"
|
|
}
|
|
`, metricsPrefix)
|
|
|
|
a := StartTestAgent(t, TestAgent{HCL: hcl})
|
|
defer a.Shutdown()
|
|
|
|
var out struct{}
|
|
err := a.RPC("Status.Ping", struct{}{}, &out)
|
|
require.NoError(t, err)
|
|
|
|
respRec := httptest.NewRecorder()
|
|
recordPromMetrics(t, a, respRec)
|
|
|
|
assertMetricNotExists(t, respRec, metricsPrefix+"_rpc_server_call")
|
|
})
|
|
|
|
t.Run("Check that 1.12 rpc metrics are emitted when specified by operator.", func(t *testing.T) {
|
|
metricsPrefix := "new_rpc_metrics_2"
|
|
allowRPCMetricRule := metricsPrefix + "." + strings.Join(middleware.OneTwelveRPCSummary[0].Name, ".")
|
|
hcl := fmt.Sprintf(`
|
|
telemetry = {
|
|
prometheus_retention_time = "5s"
|
|
disable_hostname = true
|
|
metrics_prefix = "%s"
|
|
prefix_filter = ["+%s"]
|
|
}
|
|
`, metricsPrefix, allowRPCMetricRule)
|
|
|
|
a := StartTestAgent(t, TestAgent{HCL: hcl})
|
|
defer a.Shutdown()
|
|
|
|
var out struct{}
|
|
err := a.RPC("Status.Ping", struct{}{}, &out)
|
|
require.NoError(t, err)
|
|
err = a.RPC("Status.Ping", struct{}{}, &out)
|
|
require.NoError(t, err)
|
|
err = a.RPC("Status.Ping", struct{}{}, &out)
|
|
require.NoError(t, err)
|
|
|
|
respRec := httptest.NewRecorder()
|
|
recordPromMetrics(t, a, respRec)
|
|
|
|
// make sure the labels exist for this metric
|
|
assertMetricExistsWithLabels(t, respRec, metricsPrefix+"_rpc_server_call", []string{"errored", "method", "request_type", "rpc_type", "leader"})
|
|
// make sure we see 3 Status.Ping metrics corresponding to the calls we made above
|
|
assertLabelWithValueForMetricExistsNTime(t, respRec, metricsPrefix+"_rpc_server_call", "method", "Status.Ping", 3)
|
|
// make sure rpc calls with elapsed time below 1ms are reported as decimal
|
|
assertMetricsWithLabelIsNonZero(t, respRec, "method", "Status.Ping")
|
|
})
|
|
}
|
|
|
|
func TestHTTPHandlers_AgentMetrics_LeaderShipMetrics(t *testing.T) {
|
|
skipIfShortTesting(t)
|
|
// This test cannot use t.Parallel() since we modify global state, ie the global metrics instance
|
|
|
|
t.Run("check that metric isLeader is set properly on server", func(t *testing.T) {
|
|
hcl := `
|
|
telemetry = {
|
|
prometheus_retention_time = "5s",
|
|
metrics_prefix = "agent_is_leader"
|
|
}
|
|
`
|
|
|
|
a := StartTestAgent(t, TestAgent{HCL: hcl})
|
|
defer a.Shutdown()
|
|
|
|
retryWithBackoff := func(expectedStr string) error {
|
|
waiter := &retry.Waiter{
|
|
MaxWait: 1 * time.Minute,
|
|
}
|
|
ctx := context.Background()
|
|
for {
|
|
if waiter.Failures() > 7 {
|
|
return fmt.Errorf("reach max failure: %d", waiter.Failures())
|
|
}
|
|
respRec := httptest.NewRecorder()
|
|
recordPromMetrics(t, a, respRec)
|
|
|
|
out := respRec.Body.String()
|
|
if strings.Contains(out, expectedStr) {
|
|
return nil
|
|
}
|
|
waiter.Wait(ctx)
|
|
}
|
|
}
|
|
// agent hasn't become a leader
|
|
err := retryWithBackoff("isLeader 0")
|
|
require.NoError(t, err, "non-leader server should have isLeader 0")
|
|
|
|
testrpc.WaitForLeader(t, a.RPC, "dc1")
|
|
|
|
// Verify agent's isLeader metrics is 1
|
|
err = retryWithBackoff("isLeader 1")
|
|
require.NoError(t, err, "leader should have isLeader 1")
|
|
})
|
|
}
|
|
|
|
// TestHTTPHandlers_AgentMetrics_ConsulAutopilot_Prometheus adds testing around
|
|
// the published autopilot metrics on https://www.consul.io/docs/agent/telemetry#autopilot
|
|
func TestHTTPHandlers_AgentMetrics_ConsulAutopilot_Prometheus(t *testing.T) {
|
|
skipIfShortTesting(t)
|
|
// This test cannot use t.Parallel() since we modify global state, ie the global metrics instance
|
|
|
|
t.Run("Check consul_autopilot_* are not emitted metrics on clients", func(t *testing.T) {
|
|
hcl := `
|
|
telemetry = {
|
|
prometheus_retention_time = "5s"
|
|
disable_hostname = true
|
|
metrics_prefix = "agent_1"
|
|
}
|
|
bootstrap = false
|
|
server = false
|
|
`
|
|
|
|
a := StartTestAgent(t, TestAgent{HCL: hcl})
|
|
defer a.Shutdown()
|
|
|
|
respRec := httptest.NewRecorder()
|
|
recordPromMetrics(t, a, respRec)
|
|
|
|
assertMetricNotExists(t, respRec, "agent_1_autopilot_healthy")
|
|
assertMetricNotExists(t, respRec, "agent_1_autopilot_failure_tolerance")
|
|
})
|
|
|
|
t.Run("Check consul_autopilot_healthy metric value on startup", func(t *testing.T) {
|
|
// don't bootstrap agent so as not to
|
|
// become a leader
|
|
hcl := `
|
|
telemetry = {
|
|
prometheus_retention_time = "5s",
|
|
disable_hostname = true
|
|
metrics_prefix = "agent_2"
|
|
}
|
|
bootstrap = false
|
|
`
|
|
|
|
a := StartTestAgent(t, TestAgent{HCL: hcl})
|
|
defer a.Shutdown()
|
|
|
|
respRec := httptest.NewRecorder()
|
|
recordPromMetrics(t, a, respRec)
|
|
|
|
assertMetricExistsWithValue(t, respRec, "agent_2_autopilot_healthy", "1")
|
|
assertMetricExistsWithValue(t, respRec, "agent_2_autopilot_failure_tolerance", "0")
|
|
})
|
|
}
|
|
|
|
func TestHTTPHandlers_AgentMetrics_TLSCertExpiry_Prometheus(t *testing.T) {
|
|
skipIfShortTesting(t)
|
|
// This test cannot use t.Parallel() since we modify global state, ie the global metrics instance
|
|
|
|
dir := testutil.TempDir(t, "ca")
|
|
caPEM, caPK, err := tlsutil.GenerateCA(tlsutil.CAOpts{Days: 20, Domain: "consul"})
|
|
require.NoError(t, err)
|
|
|
|
caPath := filepath.Join(dir, "ca.pem")
|
|
err = os.WriteFile(caPath, []byte(caPEM), 0600)
|
|
require.NoError(t, err)
|
|
|
|
signer, err := tlsutil.ParseSigner(caPK)
|
|
require.NoError(t, err)
|
|
|
|
pem, key, err := tlsutil.GenerateCert(tlsutil.CertOpts{
|
|
Signer: signer,
|
|
CA: caPEM,
|
|
Name: "server.dc1.consul",
|
|
Days: 20,
|
|
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth},
|
|
})
|
|
require.NoError(t, err)
|
|
|
|
certPath := filepath.Join(dir, "cert.pem")
|
|
err = os.WriteFile(certPath, []byte(pem), 0600)
|
|
require.NoError(t, err)
|
|
|
|
keyPath := filepath.Join(dir, "cert.key")
|
|
err = os.WriteFile(keyPath, []byte(key), 0600)
|
|
require.NoError(t, err)
|
|
|
|
hcl := fmt.Sprintf(`
|
|
telemetry = {
|
|
prometheus_retention_time = "5s",
|
|
disable_hostname = true
|
|
metrics_prefix = "agent_3"
|
|
}
|
|
ca_file = "%s"
|
|
cert_file = "%s"
|
|
key_file = "%s"
|
|
`, caPath, certPath, keyPath)
|
|
|
|
a := StartTestAgent(t, TestAgent{HCL: hcl})
|
|
defer a.Shutdown()
|
|
|
|
respRec := httptest.NewRecorder()
|
|
recordPromMetrics(t, a, respRec)
|
|
|
|
require.Contains(t, respRec.Body.String(), "agent_3_agent_tls_cert_expiry 1.7")
|
|
}
|
|
|
|
func TestHTTPHandlers_AgentMetrics_CACertExpiry_Prometheus(t *testing.T) {
|
|
skipIfShortTesting(t)
|
|
// This test cannot use t.Parallel() since we modify global state, ie the global metrics instance
|
|
|
|
t.Run("non-leader emits NaN", func(t *testing.T) {
|
|
hcl := `
|
|
telemetry = {
|
|
prometheus_retention_time = "5s",
|
|
disable_hostname = true
|
|
metrics_prefix = "agent_4"
|
|
}
|
|
connect {
|
|
enabled = true
|
|
}
|
|
bootstrap = false
|
|
`
|
|
|
|
a := StartTestAgent(t, TestAgent{HCL: hcl})
|
|
defer a.Shutdown()
|
|
|
|
respRec := httptest.NewRecorder()
|
|
recordPromMetrics(t, a, respRec)
|
|
|
|
require.Contains(t, respRec.Body.String(), "agent_4_mesh_active_root_ca_expiry NaN")
|
|
require.Contains(t, respRec.Body.String(), "agent_4_mesh_active_signing_ca_expiry NaN")
|
|
})
|
|
|
|
t.Run("leader emits a value", func(t *testing.T) {
|
|
hcl := `
|
|
telemetry = {
|
|
prometheus_retention_time = "5s",
|
|
disable_hostname = true
|
|
metrics_prefix = "agent_5"
|
|
}
|
|
connect {
|
|
enabled = true
|
|
}
|
|
`
|
|
|
|
a := StartTestAgent(t, TestAgent{HCL: hcl})
|
|
defer a.Shutdown()
|
|
testrpc.WaitForLeader(t, a.RPC, "dc1")
|
|
|
|
respRec := httptest.NewRecorder()
|
|
recordPromMetrics(t, a, respRec)
|
|
|
|
out := respRec.Body.String()
|
|
require.Contains(t, out, "agent_5_mesh_active_root_ca_expiry 3.15")
|
|
require.Contains(t, out, "agent_5_mesh_active_signing_ca_expiry 3.15")
|
|
})
|
|
|
|
}
|