formatQueryOutput formats a successful query result as text header + JSON body.
(statement, resourceName string, output *QueryOutput)
| 115 | |
| 116 | // formatQueryOutput formats a successful query result as text header + JSON body. |
| 117 | func formatQueryOutput(statement, resourceName string, output *QueryOutput) string { |
| 118 | var sb strings.Builder |
| 119 | |
| 120 | fmt.Fprintf(&sb, "Query: %s\n", statement) |
| 121 | fmt.Fprintf(&sb, "Database: %s\n", resourceName) |
| 122 | |
| 123 | columnList := strings.Join(output.Columns, ", ") |
| 124 | if output.Truncated { |
| 125 | fmt.Fprintf(&sb, "Result: Showing %d of unknown total rows, %d columns (%s) | %dms\n", |
| 126 | output.RowCount, len(output.Columns), columnList, output.LatencyMs) |
| 127 | sb.WriteString("Truncated: use limit param for more (max 1000).\n") |
| 128 | } else { |
| 129 | fmt.Fprintf(&sb, "Result: %d rows, %d columns (%s) | %dms\n", |
| 130 | output.RowCount, len(output.Columns), columnList, output.LatencyMs) |
| 131 | } |
| 132 | |
| 133 | sb.WriteString("\n") |
| 134 | jsonBytes, _ := json.Marshal(output) |
| 135 | sb.Write(jsonBytes) |
| 136 | |
| 137 | return sb.String() |
| 138 | } |
| 139 | |
| 140 | // formatToolError converts an error into an MCP error result. |
| 141 | // If the error is a *toolError, it returns structured JSON with code/message/suggestion. |
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