consul/agent/rpc/middleware/interceptors_test.go

132 lines
3.4 KiB
Go

package middleware
import (
"strings"
"sync"
"testing"
"time"
"github.com/armon/go-metrics"
"github.com/hashicorp/go-hclog"
"github.com/stretchr/testify/require"
)
// obs holds all the things we want to assert on that we recorded correctly in our tests.
type obs struct {
key []string
elapsed float32
labels []metrics.Label
}
// recorderStore acts as an in-mem mock storage for all the RequestRecorder.Record() RecorderFunc calls.
type recorderStore struct {
lock sync.Mutex
store map[string]obs
}
func (rs *recorderStore) put(key []string, o obs) {
rs.lock.Lock()
defer rs.lock.Unlock()
actualKey := strings.Join(append(key, o.labels[0].Value), "")
rs.store[actualKey] = o
}
func (rs *recorderStore) get(key []string) obs {
rs.lock.Lock()
defer rs.lock.Unlock()
actualKey := strings.Join(key, "")
return rs.store[actualKey]
}
var store = recorderStore{store: make(map[string]obs)}
var simpleRecorderFunc = func(key []string, val float32, labels []metrics.Label) {
o := obs{key: key, elapsed: val, labels: labels}
store.put(key, o)
}
type readRequest struct{}
type writeRequest struct{}
func (rr readRequest) IsRead() bool {
return true
}
func (wr writeRequest) IsRead() bool {
return false
}
// TestRequestRecorder_SimpleOK tests that the RequestRecorder can record a simple request.
func TestRequestRecorder_SimpleOK(t *testing.T) {
t.Parallel()
r := RequestRecorder{
Logger: hclog.NewInterceptLogger(&hclog.LoggerOptions{}),
RecorderFunc: simpleRecorderFunc,
}
start := time.Now()
r.Record("A.B", RPCTypeInternal, start, struct{}{}, false)
expectedLabels := []metrics.Label{
{Name: "method", Value: "A.B"},
{Name: "errored", Value: "false"},
{Name: "request_type", Value: "unreported"},
{Name: "rpc_type", Value: RPCTypeInternal},
}
o := store.get(append(metricRPCRequest, expectedLabels[0].Value))
require.Equal(t, o.key, metricRPCRequest)
require.LessOrEqual(t, o.elapsed, float32(start.Sub(time.Now()).Milliseconds()))
require.Equal(t, o.labels, expectedLabels)
}
// TestRequestRecorder_ReadRequest tests that RequestRecorder can record a read request AND a responseErrored arg.
func TestRequestRecorder_ReadRequest(t *testing.T) {
t.Parallel()
r := RequestRecorder{
Logger: hclog.NewInterceptLogger(&hclog.LoggerOptions{}),
RecorderFunc: simpleRecorderFunc,
}
start := time.Now()
r.Record("B.A", RPCTypeNetRPC, start, readRequest{}, true)
expectedLabels := []metrics.Label{
{Name: "method", Value: "B.A"},
{Name: "errored", Value: "true"},
{Name: "request_type", Value: "read"},
{Name: "rpc_type", Value: RPCTypeNetRPC},
}
o := store.get(append(metricRPCRequest, expectedLabels[0].Value))
require.Equal(t, o.labels, expectedLabels)
}
// TestRequestRecorder_WriteRequest tests that RequestRecorder can record a write request.
func TestRequestRecorder_WriteRequest(t *testing.T) {
t.Parallel()
r := RequestRecorder{
Logger: hclog.NewInterceptLogger(&hclog.LoggerOptions{}),
RecorderFunc: simpleRecorderFunc,
}
start := time.Now()
r.Record("B.C", RPCTypeNetRPC, start, writeRequest{}, true)
expectedLabels := []metrics.Label{
{Name: "method", Value: "B.C"},
{Name: "errored", Value: "true"},
{Name: "request_type", Value: "write"},
{Name: "rpc_type", Value: RPCTypeNetRPC},
}
o := store.get(append(metricRPCRequest, expectedLabels[0].Value))
require.Equal(t, o.labels, expectedLabels)
}