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// SPDX-License-Identifier: GPL-3.0-or-later
package pipeline
import (
"context"
"sort"
"testing"
"time"
"github.com/netdata/netdata/go/go.d.plugin/agent/confgroup"
"github.com/netdata/netdata/go/go.d.plugin/agent/discovery/sd/model"
"github.com/netdata/netdata/go/go.d.plugin/logger"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"gopkg.in/yaml.v2"
)
type discoverySim struct {
config string
discoverers []model.Discoverer
wantClassifyCalls int
wantComposeCalls int
wantConfGroups []*confgroup.Group
}
func (sim discoverySim) run(t *testing.T) {
t.Helper()
var cfg Config
err := yaml.Unmarshal([]byte(sim.config), &cfg)
require.Nilf(t, err, "cfg unmarshal")
clr, err := newTargetClassificator(cfg.Classify)
require.Nil(t, err, "newTargetClassificator")
cmr, err := newConfigComposer(cfg.Compose)
require.Nil(t, err, "newConfigComposer")
mockClr := &mockClassificator{clr: clr}
mockCmr := &mockComposer{cmr: cmr}
accum := newAccumulator()
accum.sendEvery = time.Second * 2
pl := &Pipeline{
Logger: logger.New(),
discoverers: sim.discoverers,
accum: accum,
clr: mockClr,
cmr: mockCmr,
configs: make(map[string]map[uint64][]confgroup.Config),
}
pl.accum.Logger = pl.Logger
clr.Logger = pl.Logger
cmr.Logger = pl.Logger
groups := sim.collectGroups(t, pl)
sortConfigGroups(groups)
sortConfigGroups(sim.wantConfGroups)
assert.Equal(t, sim.wantConfGroups, groups)
assert.Equalf(t, sim.wantClassifyCalls, mockClr.calls, "classify calls")
assert.Equalf(t, sim.wantComposeCalls, mockCmr.calls, "compose calls")
}
func (sim discoverySim) collectGroups(t *testing.T, pl *Pipeline) []*confgroup.Group {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
in := make(chan []*confgroup.Group)
done := make(chan struct{})
go func() { defer close(done); pl.Run(ctx, in) }()
timeout := time.Second * 10
var groups []*confgroup.Group
func() {
for {
select {
case inGroups := <-in:
groups = append(groups, inGroups...)
case <-done:
return
case <-time.After(timeout):
t.Logf("discovery timed out after %s, got %d groups, expected %d, some events are skipped",
timeout, len(groups), len(sim.wantConfGroups))
return
}
}
}()
return groups
}
type mockClassificator struct {
calls int
clr *targetClassificator
}
func (m *mockClassificator) classify(tgt model.Target) model.Tags {
m.calls++
return m.clr.classify(tgt)
}
type mockComposer struct {
calls int
cmr *configComposer
}
func (m *mockComposer) compose(tgt model.Target) []confgroup.Config {
m.calls++
return m.cmr.compose(tgt)
}
func sortConfigGroups(groups []*confgroup.Group) {
sort.Slice(groups, func(i, j int) bool {
return groups[i].Source < groups[j].Source
})
for _, g := range groups {
sort.Slice(g.Configs, func(i, j int) bool {
return g.Configs[i].Name() < g.Configs[j].Name()
})
}
}
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