/
plan.go
177 lines (150 loc) · 4.45 KB
/
plan.go
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// Copyright © 2016 Asteris, LLC
//
// 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 cmd
import (
"errors"
"fmt"
"os"
log "github.com/Sirupsen/logrus"
"github.com/asteris-llc/converge/graph"
"github.com/asteris-llc/converge/graph/node"
"github.com/asteris-llc/converge/helpers/logging"
"github.com/asteris-llc/converge/rpc/pb"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"golang.org/x/net/context"
)
// planCmd represents the plan command
var planCmd = &cobra.Command{
Use: "plan",
Short: "plan what needs to change in the system",
Long: `planning is the first stage in the execution of your changes, and it
can be done separately to see what needs to be changed before execution.`,
PreRunE: func(cmd *cobra.Command, args []string) error {
if len(args) == 0 {
return errors.New("Need at least one module filename as argument, got 0")
}
return nil
},
Run: func(cmd *cobra.Command, args []string) {
// set up execution context
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
GracefulExit(cancel)
// logging
clog := log.WithField("component", "client")
ctx = logging.WithLogger(ctx, clog)
maybeSetToken()
if err := maybeStartSelfHostedRPC(ctx); err != nil {
clog.WithError(err).Fatal("could not start RPC")
}
client, err := getRPCExecutorClient(ctx, getSecurityConfig())
if err != nil {
clog.WithError(err).Fatal("could not get client")
}
rpcParams := getParamsRPC(cmd)
verifyModules := viper.GetBool("verify-modules")
if !verifyModules {
clog.Warn("skipping module verification")
}
// execute files
for _, fname := range args {
flog := clog.WithField("file", fname)
flog.Debug("planning")
stream, err := client.Plan(
ctx,
&pb.LoadRequest{
Location: fname,
Parameters: rpcParams,
Verify: verifyModules,
},
)
if err != nil {
flog.WithError(err).Fatal("error getting RPC stream")
}
g := graph.New()
// get edges
edges, err := getMeta(stream)
if err != nil {
flog.WithError(err).Fatal("error getting RPC metadata")
}
for _, edge := range edges {
g.Connect(edge.Source, edge.Dest)
}
timer := new(TimerDisplay)
timer.Start()
oldOut := flog.Logger.Out
flog.Logger.Out = timer.Bypass()
// get vertices
var planError bool
err = iterateOverStream(
stream,
func(resp *pb.StatusResponse) {
slog := flog.WithFields(log.Fields{
"stage": resp.Stage,
"run": resp.Run,
"id": resp.Meta.Id,
})
switch resp.Run {
case pb.StatusResponse_STARTED:
timer.AddTimer(resp.Meta.Id + ": " + resp.Stage.String())
slog.Info("got status")
case pb.StatusResponse_FINISHED:
timer.RemoveTimer(resp.Meta.Id + ": " + resp.Stage.String())
slog.Debug("got status")
details := resp.GetDetails()
if details != nil {
printable := details.ToPrintable()
if printable.Error() != nil {
planError = true
}
g.Add(node.New(resp.Id, printable))
}
default:
slog.Warn("got unexpected status")
}
},
)
timer.Stop()
flog.Logger.Out = oldOut
if err != nil {
flog.WithError(err).Fatal("could not get responses")
}
// validate resulting graph
if err = g.Validate(); err != nil {
flog.WithError(err).Warning("graph is not valid")
}
// print results
out, err := getPrinter().Show(ctx, g)
if err != nil {
flog.WithError(err).Fatal("failed to print results")
}
fmt.Print("\n")
fmt.Print(out)
if planError {
os.Exit(1)
}
}
},
}
func init() {
planCmd.Flags().Bool("show-meta", false, "show metadata (params and modules)")
planCmd.Flags().Bool("only-show-changes", false, "only show changes")
planCmd.Flags().Bool("verify-modules", false, "verify module signatures")
registerRPCFlags(planCmd.Flags())
registerLocalRPCFlags(planCmd.Flags())
registerSSLFlags(planCmd.Flags())
registerParamsFlags(planCmd.Flags())
RootCmd.AddCommand(planCmd)
}