Function TestDesc_RingsCompare

pkg/ring/model_test.go:372–470

(t *testing.T)

}

func TestDesc_RingsCompare(t *testing.T) {
	tests := map[string]struct {
		r1, r2   *Desc
		expected CompareResult
	}{
		"nil rings": {
			r1:       nil,
			r2:       nil,
			expected: Equal,
		},
		"one nil, one empty ring": {
			r1:       nil,
			r2:       &Desc{Ingesters: map[string]InstanceDesc{}},
			expected: Equal,
		},
		"two empty rings": {
			r1:       &Desc{Ingesters: map[string]InstanceDesc{}},
			r2:       &Desc{Ingesters: map[string]InstanceDesc{}},
			expected: Equal,
		},
		"same single instance": {
			r1:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1"}}},
			r2:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1"}}},
			expected: Equal,
		},
		"same number of instances, from active to readOnly": {
			r1:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1", State: ACTIVE}}},
			r2:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1", State: READONLY}}},
			expected: EqualButReadOnly,
		},
		"same number of instances, from readOnly to active": {
			r1:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1", State: READONLY}}},
			r2:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1", State: ACTIVE}}},
			expected: EqualButReadOnly,
		},
		"same number of instances, prioritize readOnly than timestamp changes": {
			r1:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1", State: ACTIVE, Timestamp: 123456}}},
			r2:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1", State: READONLY, Timestamp: 789012}}},
			expected: EqualButReadOnly,
		},
		"same single instance, different timestamp": {
			r1:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1", Timestamp: 123456}}},
			r2:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1", Timestamp: 789012}}},
			expected: EqualButStatesAndTimestamps,
		},
		"same single instance, different state": {
			r1:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1", State: ACTIVE}}},
			r2:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1", State: JOINING}}},
			expected: EqualButStatesAndTimestamps,
		},
		"same single instance, different registered timestamp": {
			r1:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1", State: ACTIVE, RegisteredTimestamp: 1}}},
			r2:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1", State: ACTIVE, RegisteredTimestamp: 2}}},
			expected: Different,
		},
		"instance in different zone": {
			r1:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1", Zone: "one"}}},
			r2:       &Desc{Ingesters: map[string]InstanceDesc{"ing1": {Addr: "addr1", Zone: "two"}}},