open-consul/agent/consul/discovery_chain_endpoint_te...

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package consul
import (
"fmt"
"os"
"testing"
"time"
"github.com/hashicorp/consul/acl"
"github.com/hashicorp/consul/agent/connect"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/consul/testrpc"
msgpackrpc "github.com/hashicorp/net-rpc-msgpackrpc"
"github.com/stretchr/testify/require"
)
func TestDiscoveryChainEndpoint_Get(t *testing.T) {
t.Parallel()
dir1, s1 := testServerWithConfig(t, func(c *Config) {
c.PrimaryDatacenter = "dc1"
c.ACLDatacenter = "dc1"
c.ACLsEnabled = true
c.ACLMasterToken = "root"
c.ACLDefaultPolicy = "deny"
})
defer os.RemoveAll(dir1)
defer s1.Shutdown()
codec := rpcClient(t, s1)
defer codec.Close()
testrpc.WaitForTestAgent(t, s1.RPC, "dc1")
testrpc.WaitForLeader(t, s1.RPC, "dc1")
denyToken, err := upsertTestTokenWithPolicyRules(codec, "root", "dc1", "")
require.NoError(t, err)
allowToken, err := upsertTestTokenWithPolicyRules(codec, "root", "dc1", `service "web" { policy = "read" }`)
require.NoError(t, err)
getChain := func(args *structs.DiscoveryChainRequest) (*structs.DiscoveryChainResponse, error) {
resp := structs.DiscoveryChainResponse{}
err := msgpackrpc.CallWithCodec(codec, "DiscoveryChain.Get", &args, &resp)
if err != nil {
return nil, err
}
// clear fields that we don't care about
resp.QueryMeta = structs.QueryMeta{}
return &resp, nil
}
newTarget := func(service, serviceSubset, namespace, datacenter string) *structs.DiscoveryTarget {
t := structs.NewDiscoveryTarget(service, serviceSubset, namespace, datacenter)
t.SNI = connect.TargetSNI(t, connect.TestClusterID+".consul")
t.Name = t.SNI
return t
}
// ==== compiling the default chain (no config entries)
{ // no token
_, err := getChain(&structs.DiscoveryChainRequest{
Name: "web",
EvaluateInDatacenter: "dc1",
EvaluateInNamespace: "default",
Datacenter: "dc1",
})
if !acl.IsErrPermissionDenied(err) {
t.Fatalf("err: %v", err)
}
}
{ // wrong token
_, err := getChain(&structs.DiscoveryChainRequest{
Name: "web",
EvaluateInDatacenter: "dc1",
EvaluateInNamespace: "default",
Datacenter: "dc1",
QueryOptions: structs.QueryOptions{Token: denyToken.SecretID},
})
if !acl.IsErrPermissionDenied(err) {
t.Fatalf("err: %v", err)
}
}
expectDefaultResponse_DC1_Default := &structs.DiscoveryChainResponse{
Chain: &structs.CompiledDiscoveryChain{
ServiceName: "web",
Namespace: "default",
Datacenter: "dc1",
Protocol: "tcp",
StartNode: "resolver:web.default.dc1",
Nodes: map[string]*structs.DiscoveryGraphNode{
"resolver:web.default.dc1": &structs.DiscoveryGraphNode{
Type: structs.DiscoveryGraphNodeTypeResolver,
Name: "web.default.dc1",
Resolver: &structs.DiscoveryResolver{
Default: true,
ConnectTimeout: 5 * time.Second,
Target: "web.default.dc1",
},
},
},
Targets: map[string]*structs.DiscoveryTarget{
"web.default.dc1": newTarget("web", "", "default", "dc1"),
},
},
}
// various ways with good token
for _, tc := range []struct {
evalDC string
evalNS string
expect *structs.DiscoveryChainResponse
}{
{
evalDC: "dc1",
evalNS: "default",
expect: expectDefaultResponse_DC1_Default,
},
{
evalDC: "",
evalNS: "default",
expect: expectDefaultResponse_DC1_Default,
},
{
evalDC: "dc1",
evalNS: "",
expect: expectDefaultResponse_DC1_Default,
},
{
evalDC: "",
evalNS: "",
expect: expectDefaultResponse_DC1_Default,
},
} {
tc := tc
name := fmt.Sprintf("dc=%q ns=%q", tc.evalDC, tc.evalNS)
require.True(t, t.Run(name, func(t *testing.T) {
resp, err := getChain(&structs.DiscoveryChainRequest{
Name: "web",
EvaluateInDatacenter: tc.evalDC,
EvaluateInNamespace: tc.evalNS,
Datacenter: "dc1",
QueryOptions: structs.QueryOptions{Token: allowToken.SecretID},
})
require.NoError(t, err)
require.Equal(t, tc.expect, resp)
}))
}
{ // Now create one config entry.
out := false
require.NoError(t, msgpackrpc.CallWithCodec(codec, "ConfigEntry.Apply",
&structs.ConfigEntryRequest{
Datacenter: "dc1",
Entry: &structs.ServiceResolverConfigEntry{
Kind: structs.ServiceResolver,
Name: "web",
ConnectTimeout: 33 * time.Second,
},
WriteRequest: structs.WriteRequest{Token: "root"},
}, &out))
require.True(t, out)
}
// ==== compiling a chain with config entries
{ // good token
resp, err := getChain(&structs.DiscoveryChainRequest{
Name: "web",
EvaluateInDatacenter: "dc1",
EvaluateInNamespace: "default",
Datacenter: "dc1",
QueryOptions: structs.QueryOptions{Token: allowToken.SecretID},
})
require.NoError(t, err)
expect := &structs.DiscoveryChainResponse{
Chain: &structs.CompiledDiscoveryChain{
ServiceName: "web",
Namespace: "default",
Datacenter: "dc1",
Protocol: "tcp",
StartNode: "resolver:web.default.dc1",
Nodes: map[string]*structs.DiscoveryGraphNode{
"resolver:web.default.dc1": &structs.DiscoveryGraphNode{
Type: structs.DiscoveryGraphNodeTypeResolver,
Name: "web.default.dc1",
Resolver: &structs.DiscoveryResolver{
ConnectTimeout: 33 * time.Second,
Target: "web.default.dc1",
},
},
},
Targets: map[string]*structs.DiscoveryTarget{
"web.default.dc1": newTarget("web", "", "default", "dc1"),
},
},
}
require.Equal(t, expect, resp)
}
}