Java SDK

A synchronous function execution SDK is used as an example. To use the sample code, you must add the SDK dependency with the same language.

${version} indicates the SDK version number. Set it as required.

The request/response parameters and example requests/responses of the SDK are the same as those of the corresponding APIs. For details about the parameters and examples, see the API for executing a function synchronously.

SDK Request Example

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.functiongraph.v2.region.FunctionGraphRegion;
import com.huaweicloud.sdk.functiongraph.v2.*;
import com.huaweicloud.sdk.functiongraph.v2.model.*;

public class InvokeFunctionSolution {

    public static void main(String[] args) {
        // This example is only used for testing purposes. Do not hardcode your AK/SK in the production environment.
        String ak = "<YOUR AK>";
        String sk = "<YOUR SK>";
        String securityToken = System.getenv("HUAWEICLOUD_SDK_SECURITY_TOKEN");
        String projectId = "{your projectId string}";

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

        FunctionGraphClient client = FunctionGraphClient.newBuilder()
                .withCredential(auth)
                .withRegion(FunctionGraphRegion.valueOf("<region>"))
                .build();
        InvokeFunctionRequest request = new InvokeFunctionRequest();
        request.withXCffLogType("tail");
        request.withXCFFRequestVersion("v1");
        Map<String, Object> listbodyInvokeFunctionRequestBody = new HashMap<>();
        listbodyInvokeFunctionRequestBody.put("k", "v");
        request.withBody(listbodyInvokeFunctionRequestBody);
        request.withFunctionUrn("urn:fss:<region>:<project_id>:function:default:<func_name>:<version>");
        request.withXCffLogType("tail");
        request.withXCFFRequestVersion("v1");
        try {
            InvokeFunctionResponse response = client.invokeFunction(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.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}

Obtain AK/SK, region (endpoint), and project_id by referring to AK/SK Signing and Authentication Guide.

Obtain func_name and version from the function details page.

xCFFRequestVersionRequest indicates the response body format. v0: text format; v1: JSON format. Select this format when using an SDK.