/
state.go
177 lines (146 loc) · 4.26 KB
/
state.go
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//--------------------------------------------------------------------------
// Copyright 2018 Infinite Devices GmbH
// www.infinimesh.io
//
// 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 main
import (
"bytes"
"fmt"
"io"
"os"
"text/tabwriter"
prettyjson "github.com/hokaccha/go-prettyjson"
"github.com/spf13/cobra"
"github.com/golang/protobuf/jsonpb"
"github.com/golang/protobuf/ptypes"
"github.com/golang/protobuf/ptypes/timestamp"
"strings"
"github.com/infinimesh/infinimesh/pkg/shadow/shadowpb"
_struct "github.com/golang/protobuf/ptypes/struct"
)
var (
watch bool
)
func init() {
stateCmd.AddCommand(stateGetCmd)
stateCmd.AddCommand(stateSetCmd)
rootCmd.AddCommand(stateCmd)
stateGetCmd.Flags().BoolVarP(&watch, "watch", "w", false, "Watch for changes")
}
var stateCmd = &cobra.Command{
Use: "state",
PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
return connectGRPC()
},
PersistentPostRunE: func(cmd *cobra.Command, args []string) error {
return disconnectGRPC()
},
}
var stateSetCmd = &cobra.Command{
Use: "set <deviceID> <JSON State>",
Args: cobra.ExactArgs(2),
Run: func(cmd *cobra.Command, args []string) {
u := &jsonpb.Unmarshaler{}
var state _struct.Value
err := u.Unmarshal(strings.NewReader(args[1]), &state)
if err != nil {
fmt.Fprintf(os.Stderr, "Invalid state: %v\n", err)
}
_, err = shadowClient.PatchDesiredState(ctx, &shadowpb.PatchDesiredStateRequest{
Id: args[0],
Data: &state,
})
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to set state: %v", err)
}
fmt.Println("Successfully set state.")
},
}
var stateGetCmd = &cobra.Command{
Use: "get <deviceID>",
Args: cobra.ExactArgs(1),
Run: func(cmd *cobra.Command, args []string) {
w := tabwriter.NewWriter(os.Stdout, tabwriterMinWidthNested, 4, 2, tabwriterPadChar, tabwriterFlags)
defer w.Flush()
response, err := shadowClient.Get(ctx, &shadowpb.GetRequest{
Id: args[0],
})
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to get state: %v\n", err)
os.Exit(1)
}
fmt.Fprintf(w, "Reported State:")
printState(w, response.Shadow.Reported)
fmt.Fprintf(w, "Desired State:")
printState(w, response.Shadow.Desired)
if watch {
for {
resp, err := shadowClient.StreamReportedStateChanges(ctx, &shadowpb.StreamReportedStateChangesRequest{
Id: args[0],
})
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to get state: %v\n", err)
os.Exit(1)
}
for {
msg, err := resp.Recv()
if err != nil {
break
}
if msg.ReportedState != nil {
fmt.Fprintf(w, "Reported State:")
printState(w, msg.ReportedState)
}
if msg.DesiredState != nil {
fmt.Fprintf(w, "Desired State:")
printState(w, msg.DesiredState)
}
w.Flush()
}
}
}
},
}
func printState(w io.Writer, state *shadowpb.VersionedValue) {
if state == nil || state.Data == nil || state.Version == 0 {
fmt.Fprintln(w, " <none>")
return
}
fmt.Fprintf(w, "\n")
buf := &bytes.Buffer{}
m := jsonpb.Marshaler{}
err := m.Marshal(buf, state.Data)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to get state: %v\n", err)
os.Exit(1)
}
formatter := prettyjson.NewFormatter()
formatter.Newline = "\n\t\t"
pretty, err := formatter.Format(buf.Bytes())
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to get state: %v\n", err)
os.Exit(1)
}
fmt.Fprintf(w, "\tVersion:\t%v\n", state.Version)
fmt.Fprintf(w, "\tTimestamp:\t%v\n", convertTimestamp(state.Timestamp))
fmt.Fprintf(w, "\tData:\n\t\t%v\n", string(pretty))
}
func convertTimestamp(ts *timestamp.Timestamp) string {
res, err := ptypes.Timestamp(ts)
if err != nil {
return "<unknown>"
}
return res.Local().String()
}