open-consul/agent/service_checks_test.go

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// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package agent
import (
"context"
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/hashicorp/consul/agent/cache"
cachetype "github.com/hashicorp/consul/agent/cache-types"
"github.com/hashicorp/consul/agent/checks"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/consul/testrpc"
)
// Integration test for ServiceHTTPBasedChecks cache-type
// Placed in agent pkg rather than cache-types to avoid circular dependency when importing agent.TestAgent
func TestAgent_ServiceHTTPChecksNotification(t *testing.T) {
if testing.Short() {
t.Skip("too slow for testing.Short")
}
t.Parallel()
a := NewTestAgent(t, "")
defer a.Shutdown()
testrpc.WaitForTestAgent(t, a.RPC, "dc1")
service := structs.NodeService{
ID: "web",
Service: "web",
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
ch := make(chan cache.UpdateEvent)
// Watch for service check updates
err := a.cache.Notify(ctx, cachetype.ServiceHTTPChecksName, &cachetype.ServiceHTTPChecksRequest{
ServiceID: service.ID,
NodeName: a.Config.NodeName,
}, "service-checks:"+service.ID, ch)
if err != nil {
t.Fatalf("failed to set cache notification: %v", err)
}
chkTypes := []*structs.CheckType{
{
CheckID: "http-check",
HTTP: "localhost:8080/health",
Interval: 5 * time.Second,
OutputMaxSize: checks.DefaultBufSize,
},
{
CheckID: "grpc-check",
GRPC: "localhost:9090/v1.Health",
Interval: 5 * time.Second,
},
{
CheckID: "ttl-check",
TTL: 10 * time.Second,
},
}
// Adding TTL type should lead to a timeout, since only HTTP-based checks are watched
if err := a.addServiceFromSource(&service, chkTypes[2:], false, "", ConfigSourceLocal); err != nil {
t.Fatalf("failed to add service: %v", err)
}
var val cache.UpdateEvent
select {
case val = <-ch:
t.Fatal("got cache update for TTL check, expected timeout")
case <-time.After(100 * time.Millisecond):
}
// Adding service with HTTP checks should lead notification for them
if err := a.addServiceFromSource(&service, chkTypes[0:2], false, "", ConfigSourceLocal); err != nil {
t.Fatalf("failed to add service: %v", err)
}
select {
case val = <-ch:
case <-time.After(100 * time.Millisecond):
t.Fatal("didn't get cache update event")
}
got, ok := val.Result.([]structs.CheckType)
if !ok {
t.Fatalf("notified of result of wrong type, got %T, want []structs.CheckType", got)
}
want := chkTypes[0:2]
for i, c := range want {
require.Equal(t, *c, got[i])
}
// Removing the GRPC check should leave only the HTTP check
if err := a.RemoveCheck(structs.NewCheckID(chkTypes[1].CheckID, nil), false); err != nil {
t.Fatalf("failed to remove check: %v", err)
}
select {
case val = <-ch:
case <-time.After(100 * time.Millisecond):
t.Fatal("didn't get cache update event")
}
got, ok = val.Result.([]structs.CheckType)
if !ok {
t.Fatalf("notified of result of wrong type, got %T, want []structs.CheckType", got)
}
want = chkTypes[0:1]
for i, c := range want {
require.Equal(t, *c, got[i])
}
}