// cmeFactory generates a complete ContainerMetricElement with fuzzed data.
// CMEs created by cmeFactory contain partially fuzzed stats, aside from hardcoded values for Memory usage.
// The timestamp of the CME is rouded to the current minute and offset by a random number of hours.
func cmeFactory() *cache.ContainerMetricElement {
f := fuzz.New().NilChance(0).NumElements(1, 1)
containerSpec := source_api.ContainerSpec{
ContainerSpec: cadvisor.ContainerSpec{
CreationTime: time.Now(),
HasCpu: true,
HasMemory: true,
HasNetwork: true,
HasFilesystem: true,
HasDiskIo: true,
},
}
containerSpec.Cpu.Limit = 1024
containerSpec.Memory.Limit = 10000000
// Create a fuzzed ContainerStats struct
var containerStats source_api.ContainerStats
f.Fuzz(&containerStats)
// Standardize timestamp to the current minute plus a random number of hours ([1, 10])
now_time := time.Now().Round(time.Minute)
new_time := now_time
for new_time == now_time {
new_time = now_time.Add(time.Duration(rand.Intn(10)) * 5 * time.Minute)
}
containerStats.Timestamp = new_time
containerSpec.CreationTime = new_time.Add(-time.Hour)
// Standardize memory usage and limit to test aggregation
containerStats.Memory.Usage = uint64(5000)
containerStats.Memory.WorkingSet = uint64(602)
// Standardize the device name, usage and limit
new_fs := cadvisor.FsStats{}
f.Fuzz(&new_fs)
new_fs.Device = "/dev/device1"
new_fs.Usage = 50000
new_fs.Limit = 100000
containerStats.Filesystem = []cadvisor.FsStats{new_fs}
return &cache.ContainerMetricElement{
Spec: &containerSpec,
Stats: &containerStats,
}
}
// emptyCMEFactory generates an empty ContainerMetricElement.
func emptyCMEFactory() *cache.ContainerMetricElement {
f := fuzz.New().NilChance(0).NumElements(1, 1)
containerSpec := source_api.ContainerSpec{
ContainerSpec: cadvisor.ContainerSpec{
CreationTime: time.Now(),
HasCpu: false,
HasMemory: false,
HasNetwork: false,
HasFilesystem: false,
HasDiskIo: false,
},
}
var containerStats source_api.ContainerStats
f.Fuzz(&containerStats)
containerStats.Timestamp = time.Now()
return &cache.ContainerMetricElement{
Spec: &containerSpec,
Stats: &containerStats,
}
}