create_log_parsing_rule
Define custom parsing rules to extract structured data from log entries, enabling targeted analysis and monitoring of application logs.
Instructions
Create a new log parsing rule
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| description | Yes | ||
| grok | Yes | ||
| nrql | Yes | ||
| enabled | No | ||
| lucene | No | ||
| account_id | No |
Output Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| result | Yes |
Implementation Reference
- newrelic_mcp/server.py:664-688 (handler)MCP tool handler function decorated with @mcp.tool(). Handles input parameters, client initialization check, delegates to log_parsing helper, and formats response as JSON.
@mcp.tool() async def create_log_parsing_rule( description: str, grok: str, nrql: str, enabled: bool = True, lucene: str = "", account_id: Optional[str] = None, ) -> str: """Create a new log parsing rule""" if not client: return json.dumps({"error": "New Relic client not initialized"}) acct_id = account_id or client.account_id if not acct_id: return json.dumps({"error": "Account ID required but not provided"}) try: result = await log_parsing.create_log_parsing_rule( client, acct_id, description, grok, nrql, enabled, lucene ) return json.dumps(result, indent=2) except Exception as e: return json.dumps({"error": str(e)}, indent=2) - newrelic_mcp/log_parsing.py:404-455 (helper)Helper function containing the core logic: constructs and executes NerdGraph GraphQL mutation to create the log parsing rule in New Relic.
async def create_log_parsing_rule( client, account_id: str, description: str, grok: str, nrql: str, enabled: bool = True, lucene: str = "", ) -> Dict[str, Any]: """Create a new log parsing rule""" # Escape special characters in GROK pattern for GraphQL # grok_escaped = grok.replace("\\", "\\\\") mutation = f""" mutation {{ logConfigurationsCreateParsingRule( accountId: {int(account_id)}, rule: {{ description: "{description}" enabled: {str(enabled).lower()} grok: "{grok}" lucene: "{lucene}" nrql: "{nrql}" }} ) {{ rule {{ id description enabled grok lucene nrql updatedAt }} errors {{ message type }} }} }} """ result = await client.nerdgraph_query(mutation) if result and "data" in result: create_result = result["data"].get("logConfigurationsCreateParsingRule", {}) if create_result.get("errors"): raise Exception(f"Failed to create rule: {create_result['errors']}") return create_result.get("rule", {}) raise Exception("Failed to create parsing rule")