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afef5ce373
This way, bug-fixers are more likely to know which version of terraform is actually broken.
68 lines
2.0 KiB
Go
68 lines
2.0 KiB
Go
package main
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import (
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"fmt"
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"io"
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"os"
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"strings"
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"github.com/mitchellh/panicwrap"
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)
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// This output is shown if a panic happens.
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const panicOutput = `
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!!!!!!!!!!!!!!!!!!!!!!!!!!! TERRAFORM CRASH !!!!!!!!!!!!!!!!!!!!!!!!!!!!
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Terraform crashed! This is always indicative of a bug within Terraform.
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A crash log has been placed at "crash.log" relative to your current
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working directory. It would be immensely helpful if you could please
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report the crash with Terraform[1] so that we can fix this.
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When reporting bugs, please include your terraform version. That
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information is available on the first line of crash.log. You can also
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get it by running 'terraform --version' on the command line.
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[1]: https://github.com/hashicorp/terraform/issues
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!!!!!!!!!!!!!!!!!!!!!!!!!!! TERRAFORM CRASH !!!!!!!!!!!!!!!!!!!!!!!!!!!!
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`
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// panicHandler is what is called by panicwrap when a panic is encountered
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// within Terraform. It is guaranteed to run after the resulting process has
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// exited so we can take the log file, add in the panic, and store it
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// somewhere locally.
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func panicHandler(logF *os.File) panicwrap.HandlerFunc {
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return func(m string) {
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// Right away just output this thing on stderr so that it gets
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// shown in case anything below fails.
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fmt.Fprintf(os.Stderr, fmt.Sprintf("%s\n", m))
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// Create the crash log file where we'll write the logs
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f, err := os.Create("crash.log")
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to create crash log file: %s", err)
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return
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}
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defer f.Close()
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// Seek the log file back to the beginning
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if _, err = logF.Seek(0, 0); err != nil {
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fmt.Fprintf(os.Stderr, "Failed to seek log file for crash: %s", err)
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return
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}
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// Copy the contents to the crash file. This will include
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// the panic that just happened.
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if _, err = io.Copy(f, logF); err != nil {
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fmt.Fprintf(os.Stderr, "Failed to write crash log: %s", err)
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return
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}
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// Tell the user a crash occurred in some helpful way that
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// they'll hopefully notice.
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fmt.Printf("\n\n")
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fmt.Println(strings.TrimSpace(panicOutput))
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}
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}
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