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cmd_list.go
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cmd_list.go
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package cli
import (
"context"
"encoding/json"
"fmt"
"net"
"strings"
"github.com/spf13/cobra"
"github.com/telepresenceio/telepresence/rpc/v2/connector"
"github.com/telepresenceio/telepresence/rpc/v2/manager"
)
type listInfo struct {
onlyIntercepts bool
onlyAgents bool
onlyInterceptable bool
debug bool
namespace string
json bool
}
func listCommand() *cobra.Command {
s := &listInfo{}
cmd := &cobra.Command{
Use: "list",
Args: cobra.NoArgs,
Short: "List current intercepts",
RunE: s.list,
}
flags := cmd.Flags()
flags.BoolVarP(&s.onlyIntercepts, "intercepts", "i", false, "intercepts only")
flags.BoolVarP(&s.onlyAgents, "agents", "a", false, "with installed agents only")
flags.BoolVarP(&s.onlyInterceptable, "only-interceptable", "o", true, "interceptable workloads only")
flags.BoolVar(&s.debug, "debug", false, "include debugging information")
flags.StringVarP(&s.namespace, "namespace", "n", "", "If present, the namespace scope for this CLI request")
flags.BoolVarP(&s.json, "json", "j", false, "output as json array")
return cmd
}
// list requests a list current intercepts from the daemon
func (s *listInfo) list(cmd *cobra.Command, _ []string) error {
var r *connector.WorkloadInfoSnapshot
var err error
err = withConnector(cmd, true, nil, func(ctx context.Context, cs *connectorState) error {
var filter connector.ListRequest_Filter
switch {
case s.onlyIntercepts:
filter = connector.ListRequest_INTERCEPTS
case s.onlyAgents:
filter = connector.ListRequest_INSTALLED_AGENTS
case s.onlyInterceptable:
filter = connector.ListRequest_INTERCEPTABLE
default:
filter = connector.ListRequest_EVERYTHING
}
r, err = cs.userD.List(ctx, &connector.ListRequest{Filter: filter, Namespace: s.namespace})
return err
})
if err != nil {
return err
}
stdout := cmd.OutOrStdout()
if len(r.Workloads) == 0 {
if s.json {
fmt.Fprintln(stdout, "[]")
} else {
fmt.Fprintln(stdout, "No Workloads (Deployments, StatefulSets, or ReplicaSets)")
}
return nil
}
nameLen := 0
for _, dep := range r.Workloads {
n := dep.Name
if n == "" {
// Local-only, so use name of intercept
n = dep.InterceptInfo.Spec.Name
}
if nl := len(n); nl > nameLen {
nameLen = nl
}
}
state := func(workload *connector.WorkloadInfo) string {
if ii := workload.InterceptInfo; ii != nil {
return DescribeIntercept(ii, nil, s.debug)
}
ai := workload.AgentInfo
if ai != nil {
return "ready to intercept (traffic-agent already installed)"
}
if workload.NotInterceptableReason != "" {
return "not interceptable (traffic-agent not installed): " + workload.NotInterceptableReason
} else {
return "ready to intercept (traffic-agent not yet installed)"
}
}
if s.json {
msg, err := json.Marshal(r.Workloads)
if err != nil {
fmt.Fprintf(stdout, "json marshal error: %v", err)
} else {
fmt.Fprintf(stdout, "%s", msg)
}
} else {
for _, workload := range r.Workloads {
if workload.Name == "" {
// Local-only, so use name of intercept
fmt.Fprintf(stdout, "%-*s: local-only intercept\n", nameLen, workload.InterceptInfo.Spec.Name)
} else {
fmt.Fprintf(stdout, "%-*s: %s\n", nameLen, workload.Name, state(workload))
}
}
}
return nil
}
func DescribeIntercept(ii *manager.InterceptInfo, volumeMountsPrevented error, debug bool) string {
msg := "intercepted"
type kv struct {
Key string
Value string
}
var fields []kv
fields = append(fields, kv{"Intercept name", ii.Spec.Name})
fields = append(fields, kv{"State", func() string {
msg := ""
if ii.Disposition > manager.InterceptDispositionType_WAITING {
msg += "error: "
}
msg += ii.Disposition.String()
if ii.Message != "" {
msg += ": " + ii.Message
}
return msg
}()})
fields = append(fields, kv{"Workload kind", ii.Spec.WorkloadKind})
if debug {
fields = append(fields, kv{"ID", ii.Id})
}
fields = append(fields, kv{"Destination",
net.JoinHostPort(ii.Spec.TargetHost, fmt.Sprintf("%d", ii.Spec.TargetPort))})
if ii.Spec.ServicePortIdentifier != "" {
fields = append(fields, kv{"Service Port Identifier", ii.Spec.ServicePortIdentifier})
}
if debug {
fields = append(fields, kv{"Mechanism", ii.Spec.Mechanism})
fields = append(fields, kv{"Mechanism Args", fmt.Sprintf("%q", ii.Spec.MechanismArgs)})
fields = append(fields, kv{"Metadata", fmt.Sprintf("%q", ii.Metadata)})
}
if ii.Spec.MountPoint != "" {
fields = append(fields, kv{"Volume Mount Point", ii.Spec.MountPoint})
} else if volumeMountsPrevented != nil {
fields = append(fields, kv{"Volume Mount Error", volumeMountsPrevented.Error()})
}
fields = append(fields, kv{"Intercepting", func() string {
if ii.MechanismArgsDesc == "" {
if len(ii.Spec.MechanismArgs) > 0 {
return fmt.Sprintf("using mechanism=%q with args=%q", ii.Spec.Mechanism, ii.Spec.MechanismArgs)
}
return fmt.Sprintf("using mechanism=%q", ii.Spec.Mechanism)
}
return ii.MechanismArgsDesc
}()})
if ii.PreviewDomain != "" {
previewURL := ii.PreviewDomain
// Right now SystemA gives back domains with the leading "https://", but
// let's not rely on that.
if !strings.HasPrefix(previewURL, "https://") && !strings.HasPrefix(previewURL, "http://") {
previewURL = "https://" + previewURL
}
fields = append(fields, kv{"Preview URL", previewURL})
}
if l5Hostname := ii.GetPreviewSpec().GetIngress().GetL5Host(); l5Hostname != "" {
fields = append(fields, kv{"Layer 5 Hostname", l5Hostname})
}
klen := 0
for _, kv := range fields {
if len(kv.Key) > klen {
klen = len(kv.Key)
}
}
for _, kv := range fields {
vlines := strings.Split(strings.TrimSpace(kv.Value), "\n")
msg += fmt.Sprintf("\n %-*s: %s", klen, kv.Key, vlines[0])
for _, vline := range vlines[1:] {
msg += "\n " + vline
}
}
return msg
}