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extractor.go
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/
extractor.go
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package cnimonitor
import (
"errors"
"fmt"
"strings"
"github.com/aporeto-inc/trireme-lib/constants"
"github.com/aporeto-inc/trireme-lib/monitor/rpcmonitor"
"github.com/aporeto-inc/trireme-lib/policy"
)
// A CNIMetadataExtractor is a function used to extract a *policy.PURuntime from an event generated by CNI
type CNIMetadataExtractor func(event *rpcmonitor.EventInfo) (*policy.PURuntime, error)
// KubernetesCNIMetadataExtractor is a systemd based metadata extractor
func KubernetesCNIMetadataExtractor(event *rpcmonitor.EventInfo) (*policy.PURuntime, error) {
if event.NS == "" {
return nil, errors.New("namespace path is required when using cni")
}
runtimeTags := policy.NewTagStore()
for _, tag := range event.Tags {
parts := strings.Split(tag, "=")
if len(parts) != 2 {
return nil, fmt.Errorf("invalid tag: %s", tag)
}
runtimeTags.AppendKeyValue("@usr:"+parts[0], parts[1])
}
runtimeIps := policy.ExtendedMap{"bridge": "0.0.0.0/0"}
return policy.NewPURuntime(event.Name, 1, "", runtimeTags, runtimeIps, constants.LinuxProcessPU, nil), nil
}
// DockerCNIMetadataExtractor is a systemd based metadata extractor
func DockerCNIMetadataExtractor(event *rpcmonitor.EventInfo) (*policy.PURuntime, error) {
if event.NS == "" {
return nil, errors.New("namespace path is required when using cni")
}
runtimeTags := policy.NewTagStore()
for _, tag := range event.Tags {
parts := strings.Split(tag, "=")
if len(parts) != 2 {
return nil, fmt.Errorf("invalid tag: %s", tag)
}
runtimeTags.AppendKeyValue("@usr:"+parts[0], parts[1])
}
runtimeIps := policy.ExtendedMap{"bridge": "0.0.0.0/0"}
return policy.NewPURuntime(event.Name, 0, event.NS, runtimeTags, runtimeIps, constants.ContainerPU, nil), nil
}