Updated on 2024-10-31 GMT+08:00

Querying Flow Logs

Function

This API is used to query flow logs.

Calling Method

For details, see Calling APIs.

URI

GET /v1/{project_id}/cfw/logs/flow

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Project ID, which can be obtained by calling an API or from the console. For details, see Obtaining a Project ID.

Table 2 Query Parameters

Parameter

Mandatory

Type

Description

fw_instance_id

Yes

String

Firewall ID, which can be obtained by referring to Obtaining a Firewall ID.

direction

No

String

Direction. Its value can be in2out or out2in.

log_type

No

String

Log type. Its value can be internet, vpc, or nat.

start_time

Yes

Long

Start time, in milliseconds. The value is a timestamp, for example, 1718936272648.

end_time

Yes

Long

End time, in milliseconds. The value is a timestamp, for example, 1718936272648.

src_ip

No

String

Source IP address.

src_port

No

Integer

Source port.

dst_ip

No

String

Destination IP address.

dst_port

No

Integer

Destination port.

protocol

No

String

Protocol type. Its value can be TCP, UDP, ICMP, or ICMPv6.

app

No

String

Rule application type. Its value can be HTTP, HTTPS, TLS1, DNS, SSH, MYSQL, SMTP, RDP, RDPS, VNC, POP3, IMAP4, SMTPS, POP3S, FTPS, ANY, or BGP.

log_id

No

String

Document ID. For the first page, its value is null. For other pages, its value can be the log_id of the last record in the last query.

next_date

No

Long

Next date. For the first page, its value is null. For other pages, its value can be the start_time of the last record in the last query.

offset

No

Integer

Offset, which specifies the start position of the record to be returned. The value must be a number greater than 0. For the first page, its value is null. For other pages, its value is not null.

limit

Yes

Integer

Number of records displayed on each page. The value ranges from 1 to 1024.

enterprise_project_id

No

String

Enterprise project ID, which is the ID of a project planned based on organizations. You can obtain the enterprise project ID by referring to Obtaining an Enterprise Project ID. If the enterprise project function is not enabled, the value is 0.

dst_host

No

String

Destination host.

src_region_name

No

String

Source region name.

dst_region_name

No

String

Destination region name.

src_province_name

No

String

Source province name.

dst_province_name

No

String

Destination province name.

src_city_name

No

String

Source city name.

dst_city_name

No

String

Destination city name.

Request Parameters

Table 3 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

User token. You can obtain the token by referring to Obtaining a User Token.

Response Parameters

Status code: 200

Table 4 Response body parameters

Parameter

Type

Description

data

data object

Return value for querying flow logs.

Table 5 data

Parameter

Type

Description

total

Integer

Total number of returned records for querying flow logs.

limit

Integer

Number of records displayed on each page. The value ranges from 1 to 1024.

records

Array of records objects

Record.

Table 6 records

Parameter

Type

Description

bytes

Double

Byte.

direction

String

Direction: in2out (outbound) or out2in (inbound).

packets

Integer

Number of packets.

start_time

Long

Start time, in milliseconds. The value is a timestamp, for example, 1718936272648.

end_time

Long

End time, in milliseconds. The value is a timestamp, for example, 1718936272648.

log_id

String

Document ID.

src_ip

String

Source IP address.

src_port

Integer

Source port.

dst_ip

String

Destination IP address.

app

String

Rule application type. Its value can be HTTP, HTTPS, TLS1, DNS, SSH, MYSQL, SMTP, RDP, RDPS, VNC, POP3, IMAP4, SMTPS, POP3S, FTPS, ANY, or BGP.

dst_port

Integer

Destination port.

protocol

String

Protocol type: 6 (TCP), 17 (UDP), 1 (ICMP), 58 (ICMPv6), or -1 (any). It cannot be left blank when type is set to 0 (manual), and can be left blank when type is set to 1 (automatic).

dst_host

String

Destination host.

dst_region_id

String

Destination region ID.

dst_region_name

String

Destination region name.

src_region_id

String

Source region ID.

src_region_name

String

Source region name.

dst_province_id

String

Destination province ID.

dst_province_name

String

Destination province name.

dst_city_id

String

Destination city ID.

dst_city_name

String

Destination city name.

src_province_id

String

Source province ID.

src_province_name

String

Source province name.

src_city_id

String

Source city ID.

src_city_name

String

Source city name.

Status code: 400

Table 7 Response body parameters

Parameter

Type

Description

error_code

String

Error code.

error_msg

String

Error description.

Example Requests

Query the flow logs on the first page of the firewall with the ID 2af58b7c-893c-4453-a984-bdd9b1bd6318 in the project 9d80d070b6d44942af73c9c3d38e0429. The query time range is 1663555012000 to 1664159798000.

https://{Endpoint}/v1/9d80d070b6d44942af73c9c3d38e0429/cfw/logs/flow?fw_instance_id=2af58b7c-893c-4453-a984-bdd9b1bd6318&start_time=1663555012000&end_time=1664159798000&limit=10

Example Responses

Status code: 200

Value returned for flow log query.

{
  "data" : {
    "limit" : 10,
    "records" : [ {
      "app" : "SSH",
      "bytes" : 34.5,
      "direction" : "out2in",
      "dst_ip" : "100.95.148.49",
      "dst_port" : 22,
      "end_time" : 1664155493000,
      "log_id" : "76354",
      "packets" : 25,
      "protocol" : "TCP",
      "src_ip" : "100.93.27.17",
      "src_port" : 49634,
      "start_time" : 1664155428000,
      "src_province_id" : "source province id",
      "src_province_name" : "source province name",
      "src_city_id" : "source city id",
      "src_city_name" : "source city name",
      "dst_province_id" : "dst province id",
      "dst_province_name" : "dst province name",
      "dst_city_id" : "dst city id",
      "dst_city_name" : "dst city name"
    } ],
    "total" : 1
  }
}

Status code: 400

Bad Request

{
  "error_code" : "CFW.00500002",
  "error_msg" : "Invalid interval."
}

SDK Sample Code

The SDK sample code is as follows.

Java

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package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.cfw.v1.region.CfwRegion;
import com.huaweicloud.sdk.cfw.v1.*;
import com.huaweicloud.sdk.cfw.v1.model.*;


public class ListFlowLogsSolution {

    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");
        String projectId = "{project_id}";

        ICredential auth = new BasicCredentials()
                .withProjectId(projectId)
                .withAk(ak)
                .withSk(sk);

        CfwClient client = CfwClient.newBuilder()
                .withCredential(auth)
                .withRegion(CfwRegion.valueOf("<YOUR REGION>"))
                .build();
        ListFlowLogsRequest request = new ListFlowLogsRequest();
        try {
            ListFlowLogsResponse response = client.listFlowLogs(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}

Python

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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkcfw.v1.region.cfw_region import CfwRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkcfw.v1 import *

if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = os.environ["CLOUD_SDK_AK"]
    sk = os.environ["CLOUD_SDK_SK"]
    projectId = "{project_id}"

    credentials = BasicCredentials(ak, sk, projectId)

    client = CfwClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(CfwRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ListFlowLogsRequest()
        response = client.list_flow_logs(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

Go

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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    cfw "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cfw/v1"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cfw/v1/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cfw/v1/region"
)

func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")
    projectId := "{project_id}"

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()

    client := cfw.NewCfwClient(
        cfw.CfwClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ListFlowLogsRequest{}
	response, err := client.ListFlowLogs(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

More

For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.

Status Codes

Status Code

Description

200

Value returned for flow log query.

400

Bad Request

401

Unauthorized

403

Forbidden

404

Not Found

500

Internal Server Error

Error Codes

See Error Codes.