github.com/inspektor-gadget/inspektor-gadget@v0.28.1/pkg/container-collection/operator.go (about)

     1  // Copyright 2022-2024 The Inspektor Gadget authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package containercollection
    16  
    17  import (
    18  	"github.com/inspektor-gadget/inspektor-gadget/pkg/operators"
    19  )
    20  
    21  func (cc *ContainerCollection) EnrichEventByMntNs(event operators.ContainerInfoFromMountNSID) {
    22  	event.SetNode(cc.nodeName)
    23  
    24  	mountNsId := event.GetMountNSID()
    25  	container := cc.LookupContainerByMntns(mountNsId)
    26  	if container == nil && cc.cachedContainers != nil {
    27  		container = lookupContainerByMntns(cc.cachedContainers, mountNsId)
    28  	}
    29  	if container != nil {
    30  		event.SetContainerMetadata(container)
    31  	}
    32  }
    33  
    34  func (cc *ContainerCollection) EnrichEventByNetNs(event operators.ContainerInfoFromNetNSID) {
    35  	event.SetNode(cc.nodeName)
    36  
    37  	netNsId := event.GetNetNSID()
    38  	containers := cc.LookupContainersByNetns(netNsId)
    39  	if len(containers) == 0 {
    40  		containers = lookupContainersByNetns(cc.cachedContainers, netNsId)
    41  	}
    42  	if len(containers) == 0 || containers[0].HostNetwork {
    43  		return
    44  	}
    45  	if len(containers) == 1 {
    46  		event.SetContainerMetadata(containers[0])
    47  		return
    48  	}
    49  	if containers[0].K8s.PodName != "" && containers[0].K8s.Namespace != "" {
    50  		// Kubernetes containers within the same pod.
    51  		event.SetPodMetadata(containers[0])
    52  	}
    53  	// else {
    54  	// 	TODO: Non-Kubernetes containers sharing the same network namespace.
    55  	// 	What should we do here?
    56  	// }
    57  
    58  	return
    59  }