Here is the translation into English:

text/template component: Parses templates using text/template (opens new window). Used for message format transformation and format adaptation scenarios.

Configuration

Field	Type	Description	Default Value
template	string	Template content or file path, use file: prefix for file paths	None

template:

• Access message ID through the .id variable
• Access message timestamp through the .ts variable
• Access the original content of the message through the .data variable
• Access the transformed data of the message through the .msg variable; if the message's dataType is JSON, you can access the fields of msg using .msg.XX
• Access message metadata through the .metadata variable. For example, .metadata.customerName
• Access message type through the .type variable
• Access data type through the .dataType variable

Example:

id:{{ .id }}
ts:{{ .ts }}
type:{{ .type }}
data:{{ .data }}
msg.name:{{ .msg.name }}
dataType:{{ .dataType }}
productType:{{ .metadata.productType }}

Here's the translation into English:

Custom Function

You can register a custom function through github.com/rulego/rulego/builtin/funcs.TemplateFuncMap, for example:

import "github.com/rulego/rulego/builtin/funcs"
funcs.TemplateFuncMap["escape"] = func(s string) string {
    return strings.Replace(s, "\"", "\\\"", -1)
}

Usage:

"template": "data:\"{{.data | escape}}\""

Relation Type

• Success: If executed successfully, send the message to the Success chain
• Failure: If execution fails, send the message to the Failure chain

Execution Result

Replace the msg content with the template execution result.

Configuration Example

{
  "id": "s1",
  "type": "text/template",
  "name": "Template Transformation",
  "configuration": {
    "template": "type:{{ .type }}"
  }
}