Paul Stemmet
315a334732
The primary type exported is VrrpHandler, which interprets the given WatchRules, applying them as necessary. It implements watcher.MsgHandler, and can be considered the primary implementation.
53 lines
1.1 KiB
Go
53 lines
1.1 KiB
Go
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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package handler
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import (
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"fmt"
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"os/exec"
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"strings"
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"text/template"
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"github.com/mattn/go-shellwords"
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"go.uber.org/zap"
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)
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func runTemplate(t *template.Template, env *TemplateEnv) (string, error) {
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var buf strings.Builder
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err := t.Execute(&buf, env)
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if err != nil {
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return "", fmt.Errorf("unable to parse exec template: %w", err)
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}
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return buf.String(), nil
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}
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func mkCmd(cmdline string) (*exec.Cmd, error) {
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args, err := shellwords.Parse(cmdline)
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if err != nil {
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return nil, fmt.Errorf("unable to parse exec line: %w", err)
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}
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if len(args) < 1 {
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return nil, fmt.Errorf("exec line evaluated as empty")
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}
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return exec.Command(args[0], args[1:]...), nil
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}
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func execRuleCmd(c *exec.Cmd, l *zap.Logger) {
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err := c.Run()
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if err != nil {
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l.Named("exec").Warn(
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"watch exec failed",
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zap.String("cmd", c.String()),
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zap.String("error", err.Error()),
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)
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}
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}
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