HTTP Interfaces and External Systems for Tender Announcement

What This Category of Data Looks Like

Tender announcement data primarily comes from official government procurement network and public resource trading center platforms at all levels. Updates trigger alongside the progress of corresponding tender projects, and may be updated with supplementary or change announcements after initial publication. A single document includes core fields: project name, tender number, budget amount, bid opening time, bidder qualification requirements, and contact information. Budget amount uses Chinese Yuan or ten thousand Yuan as its unit. Time fields follow the ISO 8601 standard format. Some announcements include attachment download link fields.

Constraints Imposed on HTTP Interfaces and External Systems

Tender announcement sources are scattered, requiring integration with multiple official platform interfaces. External systems must support multi-source authentication configuration. Individual content lengths vary widely. Some announcements include extensive attachment descriptions and detailed content. Interface return payloads may exceed default limits, so pagination and segmentation parameters must be adjusted. Updates follow no fixed schedule. On-demand pulling must be supported to adapt to unexpected project publication scenarios. Fields include format-sensitive items such as amounts and times. Interface parameter validation must cover field type and unit checks to prevent data parsing errors.

Configuration Settings

Configuration Item	Recommended Value	Rationale
`HTTP_REQUEST_TIMEOUT`	600–900 seconds	Multi-source pulling of tender announcements requires traversing multiple pages of content, avoiding interruptions from the default 300-second timeout
`HTTP_RETRY_MAX_TIMES`	2 times	Official platform interfaces may experience temporary fluctuations; a small number of retries improve pulling success rates
`QUERY_PARAM_MAPPING_RULE`	Map according to interface return fields	Tender announcements have many fields; fields such as `budget_amount` and `bid_deadline` returned by the interface must be mapped to global variables
`API_RESPONSE_PAGINATION_ENABLE`	Enabled	Individual tender announcement content is lengthy; paginated returns reduce interface load
`EXTERNAL_DATA_SOURCE_AUTH_TYPE`	Configure according to the corresponding platform	Different official platforms use authentication methods including API Key and OAuth2; matching configurations are required
`WORKFLOW_LOOP_MAX_DEPTH`	3 levels	Limit loop nesting for batch tender announcement pulling to avoid excessive resource usage

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

Three Common Mistakes

Symptom: Interface calls return a 504 Gateway Timeout or Request Timed Out error. Cause: The HTTP_REQUEST_TIMEOUT configuration was not adjusted, and the default 300-second value was retained, failing to cover the time requirements of multi-source tender announcement pulling.
Symptom: Workflow execution triggers a Loop nesting limit exceeded error. Cause: No WORKFLOW_LOOP_MAX_DEPTH limit was set, with no level constraints during batch tender announcement pulling, leading to excessive resource usage.
Symptom: Global variables fail to retrieve specified tender announcement field values. Cause: The QUERY_PARAM_MAPPING_RULE was not configured, and fields such as contact_phone returned by the interface were not bound to global variables, preventing parameter passing.

How to Confirm Configurations Are Correct

Call the configured HTTP interface, check that return fields include required tender announcement fields such as project_name, bid_number, and budget_amount, and confirm field mapping matches the QUERY_PARAM_MAPPING_RULE configuration.
Review workflow execution logs to confirm no 504 Gateway Timeout or similar timeout errors, verifying that the HTTP_REQUEST_TIMEOUT configuration is active.
Test the batch tender announcement pulling loop scenario, confirm no Loop nesting limit exceeded error is triggered, verifying that the WORKFLOW_LOOP_MAX_DEPTH configuration is reasonable.
Modify mapping fields in QUERY_PARAM_MAPPING_RULE, trigger an interface call, and check that global variables correctly retrieve corresponding field values.

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.