/
types.go
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/
types.go
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// Copyright 2020 Authors of Cilium
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package types
import "time"
const (
// LostEventSourceUnspec indicates an event has been lost at an unknown
// source
LostEventSourceUnspec = iota
// LostEventSourcePerfRingBuffer indicates an event has been lost because
// the perf event ring buffer was not read before it was overwritten.
LostEventSourcePerfRingBuffer
// LostEventSourceEventsQueue indicates that an event has been dropped
// because the events queue was full.
LostEventSourceEventsQueue
)
// MonitorEvent is the top-level type for all events consumed by the observer
type MonitorEvent struct {
// Timestamp when the event was received by the consumer
Timestamp time.Time
// NodeName where the event occurred
NodeName string
// Payload is one of: AgentEvent, PerfEvent or LostEvent
Payload interface{}
}
// AgentEvent is any agent event
type AgentEvent struct {
// Type is a monitorAPI.MessageType* value
Type int
// Message is the agent message, e.g. accesslog.LogRecord, monitorAPI.AgentNotify
Message interface{}
}
// PerfEvent is a raw event obtained from a BPF perf ring buffer
type PerfEvent struct {
// Data is the raw data payload of the perf event
Data []byte
// CPU is the cpu number on which the perf event occurred
CPU int
}
// LostEvent indicates that a number of events were lost at the indicated source
type LostEvent struct {
// Source is where the events were dropped
Source int
// NumLostEvents is the number of events lost
NumLostEvents uint64
// CPU is the cpu number if for events lost in the perf ring buffer
CPU int
}