Tool Calling and Plugins for Railway and Highway Marketing

What the data for this category looks like

Railway and highway marketing-related data primarily comes from ticket settlement systems, passenger flow monitoring platforms, line operation and maintenance backends, and offline marketing activity ledgers. Data update frequencies follow multiple tiers. Real-time ticket orders and same-day passenger flow data are updated near-real time. Monthly marketing activity reports are updated daily. Basic line information is updated quarterly.

Each data document includes fields such as line number, stopping stations, time-period passenger flow, touch channels, activity identifiers, and customer unit price. Units include person trips, yuan, minutes, train number, and others. Some fields may have null values. For example, lines without active marketing activities do not include the activity identifier field.

What constraints these characteristics impose on tool calling and plugins

Different update frequencies impose constraints on plugin calling frequency and caching strategies. Real-time passenger flow and ticket data requires short-cycle caching or cache-free calls to avoid data lag. Daily and quarterly updated basic information can use long-cycle caching to reduce interface call pressure.

The multi-field document structure with null values requires plugins to support optional field mapping, to prevent call failures from missing fields. Marketing fields vary across categories. Railway and highway activity identifiers and touch channel fields cannot directly reuse plugin templates from other industries. Separate field mapping rules must be configured.

How to set configurations

Configuration Item	Recommended Setting	Rationale
`pluginDataSourceRefreshInterval`	Set real-time data sources to `10 seconds`, daily update data sources to `86400 seconds`	Matches the corresponding data update rhythm, avoids cache expiration or redundant calls
`pluginFieldMappingRule`	Customize mappings based on railway and highway data fields. Map `线路编号` to `route_id`, and `时段客流` to `passenger_flow`	Adapts to the unique data field naming of this category, prevents parsing failures from field mismatches
`PARSE_FILE_TIMEOUT_SECONDS`	`60 seconds`	Railway and highway marketing documents often include detailed passenger flow data for multiple stations, which takes longer to parse. The default timeout duration is insufficient
`UPLOAD_FILE_MAX_SIZE`	`500 MB`	Marketing materials may include high-definition line maps and passenger flow statistical report PDFs, so support for larger file uploads is needed
`pluginEnableDynamicField`	`Enabled`	Some lines have no marketing activity data. Enabling this option automatically skips null value fields to avoid call errors
`pluginApiRetryCount`	`3 retries`	Real-time ticket interfaces may experience temporary fluctuations. Retries reduce the probability of call failures

The parameter values provided on this page are common recommended starting points for configuration. Actual values are affected by material format, data volume, and business rules. Specific issues require individual analysis. It is recommended to test on your own samples before finalizing settings.

Three Common Mistakes

The symptom is a 500 Internal Server Error prompt when installing a database connection plugin. The cause is that the whitelist for the railway ticket system database was not configured, preventing the plugin from accessing the target data source.
The symptom is that the PDF enhanced parsing option in the plugin is grayed out and cannot be selected. The cause is that the global file parsing enhancement switch was not enabled, and no eligible marketing material PDF was uploaded.
The symptom is that the dataId field cannot be extracted when calling a custom API to obtain marketing activity data. The cause is that the conversion from activity_id to dataId was not configured in the field mapping rules, preventing the plugin from identifying the target identifier.

How to Confirm Configurations Are Correct

Call the plugin's built-in test interface, pass in the test line's route_id, and check if the returned result includes the preset passenger flow and customer unit price fields.
Upload a test marketing material PDF, confirm that the plugin can parse normally and extract the activity name and touch channel information from it.
View the plugin's running logs, confirm that the cache refresh frequency matches the configured pluginDataSourceRefreshInterval parameter.
Trigger a database connection test, confirm that there are no 500 Internal Server Error type error messages.

Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-14.