package consul import ( "strings" "testing" "github.com/hashicorp/consul/types" "github.com/hashicorp/serf/serf" ) func makeNode(dc, name, id string, server bool) *serf.Member { var role string if server { role = "consul" } else { role = "node" } return &serf.Member{ Name: name, Tags: map[string]string{ "role": role, "dc": dc, "id": id, "port": "8300", "build": "0.7.5", "vsn": "2", "vsn_max": "3", "vsn_min": "2", }, } } func TestMerge_LAN(t *testing.T) { t.Parallel() cases := []struct { members []*serf.Member expect string }{ // Client in the wrong datacenter. { members: []*serf.Member{ makeNode("dc2", "node1", "96430788-246f-4379-94ce-257f7429e340", false), }, expect: "wrong datacenter", }, // Server in the wrong datacenter. { members: []*serf.Member{ makeNode("dc2", "node1", "96430788-246f-4379-94ce-257f7429e340", true), }, expect: "wrong datacenter", }, // Node ID conflict with delegate's ID. { members: []*serf.Member{ makeNode("dc1", "node1", "ee954a2f-80de-4b34-8780-97b942a50a99", true), }, expect: "with this agent's ID", }, // Cluster with existing conflicting node IDs. { members: []*serf.Member{ makeNode("dc1", "node1", "6185913b-98d7-4441-bd8f-f7f7d854a4af", true), makeNode("dc1", "node2", "6185913b-98d7-4441-bd8f-f7f7d854a4af", true), }, expect: "with member", }, // Good cluster. { members: []*serf.Member{ makeNode("dc1", "node1", "6185913b-98d7-4441-bd8f-f7f7d854a4af", true), makeNode("dc1", "node2", "cda916bc-a357-4a19-b886-59419fcee50c", true), }, expect: "", }, } delegate := &lanMergeDelegate{ dc: "dc1", nodeID: types.NodeID("ee954a2f-80de-4b34-8780-97b942a50a99"), nodeName: "node0", } for i, c := range cases { if err := delegate.NotifyMerge(c.members); c.expect == "" { if err != nil { t.Fatalf("case %d: err: %v", i+1, err) } } else { if err == nil || !strings.Contains(err.Error(), c.expect) { t.Fatalf("case %d: err: %v", i+1, err) } } } } func TestMerge_WAN(t *testing.T) { t.Parallel() cases := []struct { members []*serf.Member expect string }{ // Not a server { members: []*serf.Member{ makeNode("dc2", "node1", "96430788-246f-4379-94ce-257f7429e340", false), }, expect: "not a server", }, // Good cluster. { members: []*serf.Member{ makeNode("dc2", "node1", "6185913b-98d7-4441-bd8f-f7f7d854a4af", true), makeNode("dc3", "node2", "cda916bc-a357-4a19-b886-59419fcee50c", true), }, expect: "", }, } delegate := &wanMergeDelegate{} for i, c := range cases { if err := delegate.NotifyMerge(c.members); c.expect == "" { if err != nil { t.Fatalf("case %d: err: %v", i+1, err) } } else { if err == nil || !strings.Contains(err.Error(), c.expect) { t.Fatalf("case %d: err: %v", i+1, err) } } } }