func testStorageStoreRetrieveNodesForMetadata(storage cluster.Storage, t *testing.T) {
node1 := cluster.Node{Address: "my-addr-1", Metadata: map[string]string{
"region": "reg1",
"foo": "bar",
}}
err := storage.StoreNode(node1)
assertIsNil(err, t)
defer storage.RemoveNode("my-addr-1")
node2 := cluster.Node{Address: "my-addr-2", Metadata: map[string]string{
"region": "reg2",
"foo": "bar",
}}
err = storage.StoreNode(node2)
assertIsNil(err, t)
defer storage.RemoveNode("my-addr-2")
nodes, err := storage.RetrieveNodesByMetadata(map[string]string{"region": "reg2"})
assertIsNil(err, t)
if len(nodes) != 1 {
t.Fatalf("unexpected nodes len: %d", len(nodes))
}
if nodes[0].Address != node2.Address {
t.Errorf("unexpected node: %s", nodes[0].Address)
}
if !reflect.DeepEqual(node2.Metadata, nodes[0].Metadata) {
t.Errorf("unexpected node metadata. expected: %#v got: %#v", node2.Metadata, nodes[0].Metadata)
}
nodes, err = storage.RetrieveNodesByMetadata(map[string]string{"foo": "bar"})
assertIsNil(err, t)
if len(nodes) != 2 {
t.Fatalf("unexpected nodes len: %d", len(nodes))
}
sort.Sort(cluster.NodeList(nodes))
if nodes[0].Address != node1.Address || nodes[1].Address != node2.Address {
t.Errorf("unexpected nodes: %#v", nodes)
}
if !reflect.DeepEqual(node1.Metadata, nodes[0].Metadata) {
t.Errorf("unexpected node metadata. expected: %#v got: %#v", node1.Metadata, nodes[0].Metadata)
}
if !reflect.DeepEqual(node2.Metadata, nodes[1].Metadata) {
t.Errorf("unexpected node metadata. expected: %#v got: %#v", node2.Metadata, nodes[1].Metadata)
}
}