Help Center/ ROMA Connect/ API Reference/ Service Integration APIs/ Querying Metrics/ Querying Statistics of Application Metrics by Integration Application

Updated on 2025-07-18 GMT+08:00

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Querying Statistics of Application Metrics by Integration Application

Function

This API is used to query metrics of different API products requested by an application within a specified period.

This function is restricted for use. If you have any questions, contact technical support.

URI

GET /v2/{project_id}/apic/instances/{instance_id}/statistics/apps/{consumer_app_id}/roma-apps

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain the project ID, see Appendix > Obtaining a Project ID in the ROMA Connect API Reference.
instance_id	Yes	String	Instance ID.
consumer_app_id	Yes	String	Application ID.

**Table 2** Query Parameters
Parameter	Mandatory	Type	Description
roma_app_ids	Yes	String	Integration application ID of the string type. A maximum of five integration applications can be queried at a time. Use commas (,) to separate multiple integration application IDs.
cycle	No	String	Statistical period. minute hour day If cycle is set to minute, data of the last 3 hours can be queried. If cycle is set to hour, data of the last 3 days can be queried. If cycle is set to day, data of the last 90 days can be queried.
start_time	No	String	Start time, for example, 2020-06-18 10:00:01.
end_time	No	String	End time, for example, 2020-06-18 23:00:00.
duration	No	String	The measurement duration is in the format of "integer+unit (m or h)". m indicates minute, and h indicates hour. The combination of hour and minute is supported. For example, 1h or 2h45m. If both start_time and end_time are specified, the query time range is [start_time, end_time]. If start_time does not exist, but end_time and duration exist and are valid, the query time range is [end_time – duration, end_time]. If start_time and end_time do not exist, duration exists and is valid, and end_time is now, the query time range is [end_time – duration, end_time]. If end_time does not exist, start_time and duration exist and are valid, and end_time is now, the query time range is [end_time – duration, end_time]. If start_time, end_time, and duration do not exist, the error message "missing time range parameters" is displayed.

Request Parameters

**Table 3** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token, which can be obtained by calling the IAM API (value of X-Subject-Token in the response header).

Response Parameters

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
code	String	Response code.
start_time	Long	Timestamp (UTC) of the statistics start time.
end_time	Long	End time (UTC).
roma_apps	Array of RomaAppDetail objects	Integration application statistics.

**Table 5** RomaAppDetail
Parameter	Type	Description
roma_app_id	String	Integration application ID.
roma_app_name	String	Integration application name.
list	Array of Statistics objects	List of KPIs in different periods in an integration application.

**Table 6** Statistics
Parameter	Type	Description
max_latency	Integer	Maximum latency.
avg_latency	Float	Average latency.
req_count	Integer	Total number of requests.
req_count2xx	Integer	Total number of 2xx response codes.
req_count4xx	Integer	Total number of 4xx response codes.
req_count5xx	Integer	Total number of 5xx response codes.
req_count_error	Integer	Number of errors.
max_inner_latency	Integer	Maximum gateway latency.
avg_inner_latency	Float	Average gateway latency.
max_backend_latency	Integer	Maximum backend latency.
avg_backend_latency	Float	Average backend latency.
output_throughput	Long	Downstream throughput (bytes).
input_throughput	Long	Upstream throughput (bytes).
current_minute	Long	Current timestamp in UTC format.
req_time	String	Request time. Reserved field, not supported yet.
register_time	String	Request time. Reserved field, not supported yet.

Status code: 400

**Table 7** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error description.

Status code: 401

**Table 8** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error description.

Status code: 403

**Table 9** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error description.

Status code: 404

**Table 10** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error description.

Status code: 500

**Table 11** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error description.

Example Requests

None

Example Responses

Status code: 200

{
  "code" : "APIG.0000",
  "start_time" : 1599508511,
  "end_time" : 1599616511,
  "roma_apps" : [ {
    "roma_app_id" : "1a7b421c-6103-4fcb-a0d7-3e322e863cb0",
    "roma_app_name" : "ycs-product",
    "list" : [ {
      "max_latency" : 0,
      "avg_latency" : 0,
      "max_inner_latency" : 0,
      "avg_inner_latency" : 0,
      "max_backend_latency" : 0,
      "avg_backend_latency" : 0,
      "req_count" : 0,
      "req_count2xx" : 0,
      "req_count4xx" : 0,
      "req_count5xx" : 0,
      "req_count_error" : 0,
      "output_throughput" : 0,
      "input_throughput" : 0,
      "current_minute" : 0
    } ]
  } ]
}

Status code: 400

Bad Request

{
  "error_code" : "APIG.2012",
  "error_msg" : "Invalid parameter value,parameterName:api_id. Please refer to the support documentation"
}

Status code: 401

Unauthorized

{
  "error_code" : "APIG.1002",
  "error_msg" : "Incorrect token or token resolution failed"
}

Status code: 403

Forbidden

{
  "error_code" : "APIG.1005",
  "error_msg" : "No permissions to request this method"
}

Status code: 404

Not Found

{
  "error_code" : "APIG.3002",
  "error_msg" : "API 39bce6d25a3f470e8cf7b2c97174f7d9 does not exist"
}

Status code: 500

Internal Server Error

{
  "error_code" : "APIG.9999",
  "error_msg" : "System error"
}

Status Codes

Status Code	Description
200	OK
400	Bad Request
401	Unauthorized
403	Forbidden
404	Not Found
500	Internal Server Error

Error Codes

See Error Codes.

Parent topic: Querying Metrics

Previous topic: Querying API Metric Statistics

Next topic: Querying Top N Metrics of Difference Application Requests

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