This change implements the same preview behavior we have for cloud stacks, in pkg/backend/httpbe, for local stacks, in pkg/backend/filebe. This mostly required just refactoring bits and pieces so that we can share more of the code, although it does still entail quite a bit of redundancy. In particular, the apply functions for both backends are now so close to being unified, but still require enough custom logic that it warrants keeping them separate (for now...)
138 lines
4.4 KiB
Go
138 lines
4.4 KiB
Go
// Copyright 2016-2018, 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 cmd
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import (
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"fmt"
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"time"
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mobytime "github.com/docker/docker/api/types/time"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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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/cmdutil"
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)
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// We use RFC 5424 timestamps with millisecond precision for displaying time stamps on log entries. Go does not
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// pre-define a format string for this format, though it is similar to time.RFC3339Nano.
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//
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// See https://tools.ietf.org/html/rfc5424#section-6.2.3.
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const timeFormat = "2006-01-02T15:04:05.000Z07:00"
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func newLogsCmd() *cobra.Command {
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var stack string
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var follow bool
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var since string
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var resource string
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logsCmd := &cobra.Command{
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Use: "logs",
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Short: "Show aggregated logs for a stack",
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Args: cmdutil.NoArgs,
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Run: cmdutil.RunFunc(func(cmd *cobra.Command, args []string) error {
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opts := display.Options{
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Color: cmdutil.GetGlobalColorization(),
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}
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s, err := requireStack(stack, false, opts, true /*setCurrent*/)
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if err != nil {
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return err
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}
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startTime, err := parseSince(since, time.Now())
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if err != nil {
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return errors.Wrapf(err, "failed to parse argument to '--since' as duration or timestamp")
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}
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var resourceFilter *operations.ResourceFilter
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if resource != "" {
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var rf = operations.ResourceFilter(resource)
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resourceFilter = &rf
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}
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fmt.Printf(
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opts.Color.Colorize(colors.BrightMagenta+"Collecting logs for stack %s since %s.\n\n"+colors.Reset),
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s.Ref().String(),
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startTime.Format(timeFormat),
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)
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// IDEA: This map will grow forever as new log entries are found. We may need to do a more approximate
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// approach here to ensure we don't grow memory unboundedly while following logs.
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//
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// Note: Just tracking latest log date is not sufficient - as stale logs may show up which should have been
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// displayed before previously rendered log entries, but weren't available at the time, so still need to be
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// rendered now even though they are technically out of order.
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shown := map[operations.LogEntry]bool{}
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for {
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logs, err := s.GetLogs(commandContext(), operations.LogQuery{
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StartTime: startTime,
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ResourceFilter: resourceFilter,
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})
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if err != nil {
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return errors.Wrapf(err, "failed to get logs")
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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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fmt.Printf("%30.30s[%30.30s] %v\n", eventTime.Format(timeFormat), logEntry.ID, logEntry.Message)
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shown[logEntry] = true
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}
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}
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if !follow {
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return nil
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}
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time.Sleep(time.Second)
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}
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}),
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}
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logsCmd.PersistentFlags().StringVarP(
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&stack, "stack", "s", "",
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"The name of the stack to operate on. Defaults to the current stack")
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logsCmd.PersistentFlags().BoolVarP(
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&follow, "follow", "f", false,
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"Follow the log stream in real time (like tail -f)")
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logsCmd.PersistentFlags().StringVar(
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&since, "since", "1h",
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"Only return logs newer than a relative duration ('5s', '2m', '3h') or absolute timestamp. "+
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"Defaults to returning the last 1 hour of logs.")
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logsCmd.PersistentFlags().StringVarP(
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&resource, "resource", "r", "",
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"Only return logs for the requested resource ('name', 'type::name' or full URN). Defaults to returning all logs.")
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return logsCmd
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}
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func parseSince(since string, reference time.Time) (*time.Time, error) {
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startTimestamp, err := mobytime.GetTimestamp(since, reference)
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if err != nil {
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return nil, err
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}
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startTimeSec, startTimeNs, err := mobytime.ParseTimestamps(startTimestamp, 0)
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if err != nil {
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return nil, err
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}
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if startTimeSec == 0 && startTimeNs == 0 {
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return nil, nil
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}
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startTime := time.Unix(startTimeSec, startTimeNs)
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return &startTime, nil
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}
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