25206c5ea8
Adds a new experimental `pulumi watch` CLI command which can be used for inner loop development on a Pulumi stack. This command is only available currently via `PULUMI_EXPERIMENTAL=true` while in active development. The `watch` command does the following: 1. Watches the workspace (the tree rooted at the `Pulumi.yaml` file) for changes 2. Triggers an `update` to the stack whenever there is a change 3. Streams output containing summaries of key update events as well as logs from any resources under management into a combined CLI output Part of https://github.com/pulumi/pulumi/issues/3448. The PULUMI_EXPERIMENTAL flag also makes`query` and `policy` available.
98 lines
2.8 KiB
Go
98 lines
2.8 KiB
Go
// Copyright 2016-2019, Pulumi Corporation.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package backend
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import (
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"context"
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"fmt"
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"path"
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"time"
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"github.com/rjeczalik/notify"
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"github.com/pulumi/pulumi/pkg/apitype"
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"github.com/pulumi/pulumi/pkg/backend/display"
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"github.com/pulumi/pulumi/pkg/diag/colors"
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"github.com/pulumi/pulumi/pkg/operations"
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"github.com/pulumi/pulumi/pkg/util/logging"
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"github.com/pulumi/pulumi/pkg/util/result"
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)
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// Watch watches the project's working directory for changes and automatically updates the active
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// stack.
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func Watch(ctx context.Context, b Backend, stack Stack, op UpdateOperation, apply Applier) result.Result {
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opts := ApplierOptions{
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DryRun: false,
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ShowLink: false,
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}
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startTime := time.Now()
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go func() {
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shown := map[operations.LogEntry]bool{}
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for {
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logs, err := b.GetLogs(ctx, stack, op.StackConfiguration, operations.LogQuery{
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StartTime: &startTime,
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})
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if err != nil {
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logging.V(5).Infof("failed to get logs: %v", err.Error())
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}
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for _, logEntry := range logs {
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if _, shownAlready := shown[logEntry]; !shownAlready {
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eventTime := time.Unix(0, logEntry.Timestamp*1000000)
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display.PrintfWithWatchPrefix(eventTime, logEntry.ID, "%s\n", logEntry.Message)
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shown[logEntry] = true
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}
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}
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time.Sleep(10 * time.Second)
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}
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}()
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events := make(chan notify.EventInfo, 1)
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if err := notify.Watch(path.Join(op.Root, "..."), events, notify.All); err != nil {
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return result.FromError(err)
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}
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defer notify.Stop(events)
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fmt.Printf(op.Opts.Display.Color.Colorize(
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colors.SpecHeadline+"Watching (%s):"+colors.Reset+"\n"), stack.Ref())
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for range events {
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display.PrintfWithWatchPrefix(time.Now(), "",
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op.Opts.Display.Color.Colorize(colors.SpecImportant+"Updating..."+colors.Reset+"\n"))
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// Perform the update operation
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_, res := apply(ctx, apitype.UpdateUpdate, stack, op, opts, nil)
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if res != nil {
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logging.V(5).Infof("watch update failed: %v", res.Error())
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if res.Error() == context.Canceled {
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return res
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}
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display.PrintfWithWatchPrefix(time.Now(), "",
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op.Opts.Display.Color.Colorize(colors.SpecImportant+"Update failed."+colors.Reset+"\n"))
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} else {
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display.PrintfWithWatchPrefix(time.Now(), "",
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op.Opts.Display.Color.Colorize(colors.SpecImportant+"Update complete."+colors.Reset+"\n"))
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}
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}
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return nil
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}
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