// ToWire converts the state.MetricBatch into a type
// that can be sent over the wire to the collector.
func ToWire(mb *state.MetricBatch) *wireformat.MetricBatch {
metrics := make([]wireformat.Metric, len(mb.Metrics()))
for i, m := range mb.Metrics() {
metrics[i] = wireformat.Metric{
Key: m.Key,
Value: m.Value,
Time: m.Time.UTC(),
}
}
return &wireformat.MetricBatch{
UUID: mb.UUID(),
ModelUUID: mb.ModelUUID(),
UnitName: mb.Unit(),
CharmUrl: mb.CharmURL(),
Created: mb.Created().UTC(),
Metrics: metrics,
Credentials: mb.Credentials(),
}
}
func assertSameMetric(c *gc.C, a params.MetricResult, b *state.MetricBatch) {
c.Assert(a.Key, gc.Equals, b.Metrics()[0].Key)
c.Assert(a.Value, gc.Equals, b.Metrics()[0].Value)
c.Assert(a.Time, jc.TimeBetween(b.Metrics()[0].Time, b.Metrics()[0].Time))
}
func (s *MetricLocalCharmSuite) TestModelMetricBatches(c *gc.C) {
now := s.State.NowToTheSecond()
// Add 2 metric batches to a single unit.
m := state.Metric{"pings", "5", now}
m2 := state.Metric{"pings", "10", now}
_, err := s.State.AddMetrics(
state.BatchParam{
UUID: utils.MustNewUUID().String(),
Created: now,
CharmURL: s.meteredCharm.URL().String(),
Metrics: []state.Metric{m},
Unit: s.unit.UnitTag(),
},
)
c.Assert(err, jc.ErrorIsNil)
newUnit, err := s.application.AddUnit()
c.Assert(err, jc.ErrorIsNil)
_, err = s.State.AddMetrics(
state.BatchParam{
UUID: utils.MustNewUUID().String(),
Created: now.Add(time.Second),
CharmURL: s.meteredCharm.URL().String(),
Metrics: []state.Metric{m2},
Unit: newUnit.UnitTag(),
},
)
c.Assert(err, jc.ErrorIsNil)
// Create a new model and add a metric batch.
st := s.Factory.MakeModel(c, nil)
defer st.Close()
f := factory.NewFactory(st)
meteredCharm := f.MakeCharm(c, &factory.CharmParams{Name: "metered", URL: "cs:quantal/metered"})
service := f.MakeApplication(c, &factory.ApplicationParams{Charm: meteredCharm})
unit := f.MakeUnit(c, &factory.UnitParams{Application: service, SetCharmURL: true})
_, err = st.AddMetrics(
state.BatchParam{
UUID: utils.MustNewUUID().String(),
Created: now,
CharmURL: meteredCharm.URL().String(),
Metrics: []state.Metric{m},
Unit: unit.UnitTag(),
},
)
c.Assert(err, jc.ErrorIsNil)
// We expect 2 metric batches in our first model.
metricBatches, err := s.State.MetricBatchesForModel()
c.Assert(err, jc.ErrorIsNil)
c.Assert(metricBatches, gc.HasLen, 2)
var first, second state.MetricBatch
for _, m := range metricBatches {
if m.Unit() == "metered/0" {
first = m
}
if m.Unit() == "metered/1" {
second = m
}
}
c.Assert(first, gc.NotNil)
c.Assert(second, gc.NotNil)
c.Check(first.Unit(), gc.Equals, "metered/0")
c.Check(first.CharmURL(), gc.Equals, "local:quantal/metered")
c.Check(first.ModelUUID(), gc.Equals, s.State.ModelUUID())
c.Check(first.Sent(), jc.IsFalse)
c.Assert(first.Metrics(), gc.HasLen, 1)
c.Check(first.Metrics()[0].Value, gc.Equals, "5")
c.Check(second.Unit(), gc.Equals, "metered/1")
c.Check(second.CharmURL(), gc.Equals, "local:quantal/metered")
c.Check(second.ModelUUID(), gc.Equals, s.State.ModelUUID())
c.Check(second.Sent(), jc.IsFalse)
c.Assert(second.Metrics(), gc.HasLen, 1)
c.Check(second.Metrics()[0].Value, gc.Equals, "10")
// And a single metric batch in the second model.
metricBatches, err = st.MetricBatchesForModel()
c.Assert(err, jc.ErrorIsNil)
c.Assert(metricBatches, gc.HasLen, 1)
}