Create and delete service account keys

namespace iam = ::google::cloud::iam_admin_v1;
return [](std::string const& name) {
  iam::IAMClient client(iam::MakeIAMConnection());
  auto response = client.CreateServiceAccountKey(
      name,
      google::iam::admin::v1::ServiceAccountPrivateKeyType::
          TYPE_GOOGLE_CREDENTIALS_FILE,
      google::iam::admin::v1::ServiceAccountKeyAlgorithm::KEY_ALG_RSA_2048);
  if (!response) throw std::move(response).status();
  std::cout << "ServiceAccountKey successfully created: "
            << response->DebugString() << "\n"
            << "Please save the key in a secure location, as they cannot "
               "be downloaded later\n";
  return response->name();
}

using System;
using System.Text;
using Google.Apis.Auth.OAuth2;
using Google.Apis.Iam.v1;
using Google.Apis.Iam.v1.Data;

public partial class ServiceAccountKeys
{
    public static ServiceAccountKey CreateKey(string serviceAccountEmail)
    {
        var credential = GoogleCredential.GetApplicationDefault()
            .CreateScoped(IamService.Scope.CloudPlatform);
        var service = new IamService(new IamService.Initializer
        {
            HttpClientInitializer = credential
        });

        var key = service.Projects.ServiceAccounts.Keys.Create(
            new CreateServiceAccountKeyRequest(),
            "projects/-/serviceAccounts/" + serviceAccountEmail)
            .Execute();

        // The PrivateKeyData field contains the base64-encoded service account key
        // in JSON format.
        // TODO(Developer): Save the below key (jsonKeyFile) to a secure location.
        //  You cannot download it later.
        byte[] valueBytes = System.Convert.FromBase64String(key.PrivateKeyData);
        string jsonKeyContent = Encoding.UTF8.GetString(valueBytes);

        Console.WriteLine("Key created successfully");
        return key;
    }
}

import (
	"context"
	// "encoding/base64"
	"fmt"
	"io"

	iam "google.golang.org/api/iam/v1"
)

// createKey creates a service account key.
func createKey(w io.Writer, serviceAccountEmail string) (*iam.ServiceAccountKey, error) {
	ctx := context.Background()
	service, err := iam.NewService(ctx)
	if err != nil {
		return nil, fmt.Errorf("iam.NewService: %w", err)
	}

	resource := "projects/-/serviceAccounts/" + serviceAccountEmail
	request := &iam.CreateServiceAccountKeyRequest{}
	key, err := service.Projects.ServiceAccounts.Keys.Create(resource, request).Do()
	if err != nil {
		return nil, fmt.Errorf("Projects.ServiceAccounts.Keys.Create: %w", err)
	}
	// The PrivateKeyData field contains the base64-encoded service account key
	// in JSON format.
	// TODO(Developer): Save the below key (jsonKeyFile) to a secure location.
	// You cannot download it later.
	// jsonKeyFile, _ := base64.StdEncoding.DecodeString(key.PrivateKeyData)
	fmt.Fprintf(w, "Key created successfully")
	return key, nil
}

import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.services.iam.v1.Iam;
import com.google.api.services.iam.v1.IamScopes;
import com.google.api.services.iam.v1.model.CreateServiceAccountKeyRequest;
import com.google.api.services.iam.v1.model.ServiceAccountKey;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.Base64;
import java.util.Collections;

public class CreateServiceAccountKey {

  // Creates a key for a service account.
  public static String createKey(String projectId, String serviceAccountName) {
    // String projectId = "my-project-id";
    // String serviceAccountName = "my-service-account-name";

    Iam service = null;
    try {
      service = initService();
    } catch (IOException | GeneralSecurityException e) {
      System.out.println("Unable to initialize service: \n" + e);
      return null;
    }

    // Construct the service account email.
    // You can modify the ".iam.gserviceaccount.com" to match the service account name in which
    // you want to create the key.
    // See, https://cloud.google.com/iam/docs/creating-managing-service-account-keys?hl=en#creating
    String serviceAccountEmail = serviceAccountName + "@" + projectId + ".iam.gserviceaccount.com";
    try {
      ServiceAccountKey key =
          service
              .projects()
              .serviceAccounts()
              .keys()
              .create(
                  "projects/-/serviceAccounts/" + serviceAccountEmail,
                  new CreateServiceAccountKeyRequest())
              .execute();

      // The privateKeyData field contains the base64-encoded service account key
      // in JSON format.
      // TODO(Developer): Save the below key (jsonKeyFile) to a secure location.
      //  You cannot download it later.
      String jsonKeyFile = new String(Base64.getDecoder().decode(key.getPrivateKeyData()));

      System.out.println("Key created successfully");
      String keyName = key.getName();
      return keyName.substring(keyName.lastIndexOf("/") + 1).trim();
    } catch (IOException e) {
      System.out.println("Unable to create service account key: \n" + e);
      return null;
    }
  }

  private static Iam initService() throws GeneralSecurityException, IOException {
    // Use the Application Default Credentials strategy for authentication. For more info, see:
    // https://cloud.google.com/docs/authentication/production#finding_credentials_automatically
    GoogleCredentials credential =
        GoogleCredentials.getApplicationDefault()
            .createScoped(Collections.singleton(IamScopes.CLOUD_PLATFORM));
    // Initialize the IAM service, which can be used to send requests to the IAM API.
    Iam service =
        new Iam.Builder(
            GoogleNetHttpTransport.newTrustedTransport(),
            GsonFactory.getDefaultInstance(),
            new HttpCredentialsAdapter(credential))
            .setApplicationName("service-account-keys")
            .build();
    return service;
  }
}

import os

from google.oauth2 import service_account
import googleapiclient.discovery  # type: ignore

def create_key(service_account_email: str) -> None:
    """Creates a key for a service account."""

    credentials = service_account.Credentials.from_service_account_file(
        filename=os.environ["GOOGLE_APPLICATION_CREDENTIALS"],
        scopes=["https://www.googleapis.com/auth/cloud-platform"],
    )

    service = googleapiclient.discovery.build("iam", "v1", credentials=credentials)

    key = (
        service.projects()
        .serviceAccounts()
        .keys()
        .create(name="projects/-/serviceAccounts/" + service_account_email, body={})
        .execute()
    )

    # The privateKeyData field contains the base64-encoded service account key
    # in JSON format.
    # TODO(Developer): Save the below key {json_key_file} to a secure location.
    #  You cannot download it again later.
    # import base64
    # json_key_file = base64.b64decode(key['privateKeyData']).decode('utf-8')

    if not key["disabled"]:
        print("Created json key")

namespace iam = ::google::cloud::iam_admin_v1;
[](std::string const& name) {
  iam::IAMClient client(iam::MakeIAMConnection());
  auto response = client.DeleteServiceAccountKey(name);
  if (!response.ok()) throw std::runtime_error(response.message());
  std::cout << "ServiceAccountKey successfully deleted.\n";
}

using System;
using Google.Apis.Auth.OAuth2;
using Google.Apis.Iam.v1;
using Google.Apis.Iam.v1.Data;

public partial class ServiceAccountKeys
{
    public static void DeleteKey(string fullKeyName)
    {
        var credential = GoogleCredential.GetApplicationDefault()
            .CreateScoped(IamService.Scope.CloudPlatform);
        var service = new IamService(new IamService.Initializer
        {
            HttpClientInitializer = credential
        });

        service.Projects.ServiceAccounts.Keys.Delete(fullKeyName).Execute();
        Console.WriteLine("Deleted key: " + fullKeyName);
    }
}

import (
	"context"
	"fmt"
	"io"

	iam "google.golang.org/api/iam/v1"
)

// deleteKey deletes a service account key.
func deleteKey(w io.Writer, fullKeyName string) error {
	ctx := context.Background()
	service, err := iam.NewService(ctx)
	if err != nil {
		return fmt.Errorf("iam.NewService: %w", err)
	}

	_, err = service.Projects.ServiceAccounts.Keys.Delete(fullKeyName).Do()
	if err != nil {
		return fmt.Errorf("Projects.ServiceAccounts.Keys.Delete: %w", err)
	}
	fmt.Fprintf(w, "Deleted key: %v", fullKeyName)
	return nil
}

import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.services.iam.v1.Iam;
import com.google.api.services.iam.v1.IamScopes;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.Collections;

public class DeleteServiceAccountKey {

  // Deletes a service account key.
  public static void deleteKey(String projectId, String serviceAccountName,
      String serviceAccountKey) {
    // String projectId = "my-project-id";
    // String serviceAccountName = "my-service-account-name";
    // String serviceAccountKey = "key-name";

    Iam service = null;
    try {
      service = initService();
    } catch (IOException | GeneralSecurityException e) {
      System.out.println("Unable to initialize service: \n" + e);
      return;
    }

    // Construct the service account email.
    // You can modify the ".iam.gserviceaccount.com" to match the service account name in which
    // you want to delete the key.
    // See, https://cloud.google.com/iam/docs/creating-managing-service-account-keys?hl=en#deleting
    String serviceAccountEmail = serviceAccountName + "@" + projectId + ".iam.gserviceaccount.com";
    try {
      String keyToDelete = String.format("projects/-/serviceAccounts/%s/keys/%s",
          serviceAccountEmail, serviceAccountKey);

      // Then you can delete the key
      service.projects().serviceAccounts().keys().delete(keyToDelete).execute();

      System.out.println("Deleted key: " + keyToDelete);
    } catch (IOException e) {
      System.out.println("Unable to delete service account key: \n" + e);
    }
  }

  private static Iam initService() throws GeneralSecurityException, IOException {
    // Use the Application Default Credentials strategy for authentication. For more info, see:
    // https://cloud.google.com/docs/authentication/production#finding_credentials_automatically
    GoogleCredentials credential =
        GoogleCredentials.getApplicationDefault()
            .createScoped(Collections.singleton(IamScopes.CLOUD_PLATFORM));
    // Initialize the IAM service, which can be used to send requests to the IAM API.
    Iam service =
        new Iam.Builder(
                GoogleNetHttpTransport.newTrustedTransport(),
                GsonFactory.getDefaultInstance(),
                new HttpCredentialsAdapter(credential))
            .setApplicationName("service-account-keys")
            .build();
    return service;
  }
}

import os

from google.oauth2 import service_account
import googleapiclient.discovery  # type: ignore

def delete_key(full_key_name: str) -> None:
    """Deletes a service account key."""

    credentials = service_account.Credentials.from_service_account_file(
        filename=os.environ["GOOGLE_APPLICATION_CREDENTIALS"],
        scopes=["https://www.googleapis.com/auth/cloud-platform"],
    )

    service = googleapiclient.discovery.build("iam", "v1", credentials=credentials)

    service.projects().serviceAccounts().keys().delete(name=full_key_name).execute()

    print("Deleted key: " + full_key_name)