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package shells
import (
"encoding/json"
"fmt"
)
// trapCommandExitStatusImpl is a private struct used to unmarshall the log line read.
// All of its fields are optional, so it can check to make sure against the required and optional ones.
// The fields are then applied to TrapCommandExitStatus which is the exposed, ready-to-use struct.
type trapCommandExitStatusImpl struct {
// CommandExitCode is the exit code of the last command.
CommandExitCode *int `json:"command_exit_code"`
// Script is the script which was executed as an entrypoint for the current execution step.
// The scripts are currently named after the stage they are executed in.
// This property is **NOT REQUIRED** and may be nil in some cases.
// For example, when an error is reported by the log processor itself and not the script it was monitoring.
Script *string `json:"script"`
}
// tryUnmarshal tries to unmarshal a json string into its pointer receiver.
// It's safe to use the struct only if this method returns no error.
func (cmd *trapCommandExitStatusImpl) tryUnmarshal(line string) error {
return json.Unmarshal([]byte(line), cmd)
}
func (cmd trapCommandExitStatusImpl) hasRequiredFields() bool {
return cmd.CommandExitCode != nil
}
func (cmd trapCommandExitStatusImpl) applyTo(to *TrapCommandExitStatus) {
to.CommandExitCode = *cmd.CommandExitCode
to.Script = cmd.Script
}
type TrapCommandExitStatus struct {
CommandExitCode int
Script *string
}
// TryUnmarshal tries to unmarshal a json string into its pointer receiver.
// It wil return true only if the unmarshalled struct has all of its required fields be non-nil.
// It's safe to use the struct only if this method returns true.
func (c *TrapCommandExitStatus) TryUnmarshal(line string) bool {
var status trapCommandExitStatusImpl
err := status.tryUnmarshal(line)
if err != nil {
return false
}
if !status.hasRequiredFields() {
return false
}
status.applyTo(c)
return true
}
func (c TrapCommandExitStatus) String() string {
str := fmt.Sprintf("CommandExitCode: %v", c.CommandExitCode)
if c.Script != nil {
str = fmt.Sprintf("%s, Script: %v", str, *c.Script)
}
return str
}
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