Rimozione di un membro da un'associazione di ruolo

Dimostra la rimozione di un membro dall'associazione di un ruolo in un criterio IAM.

Per saperne di più

Per la documentazione dettagliata che include questo esempio di codice, vedi:

Gestire l'accesso a progetti, cartelle e organizzazioni

Esempio di codice

C#

Per informazioni su come installare e utilizzare la libreria client per IAM, consulta la pagina relativa alle librerie client IAM. Per ulteriori informazioni, consulta la documentazione di riferimento dell'API IAM C#.

Per eseguire l'autenticazione su IAM, configura le Credenziali predefinite dell'applicazione. Per ulteriori informazioni, consulta la pagina Configurare l'autenticazione per un ambiente di sviluppo locale.

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using System.Linq;
using Google.Apis.CloudResourceManager.v1.Data;

public partial class AccessManager
{
    public static Policy RemoveMember(Policy policy, string role, string member)
    {
        try
        {
            var binding = policy.Bindings.First(x => x.Role == role);
            if (binding.Members.Count != 0 && binding.Members.Contains(member))
            {
                binding.Members.Remove(member);
            }
            if (binding.Members.Count == 0)
            {
                policy.Bindings.Remove(binding);
            }
            return policy;
        }
        catch (System.InvalidOperationException e)
        {
            System.Diagnostics.Debug.WriteLine("Role does not exist in policy: \n" + e.ToString());
            return policy;
        }
    }
}

Go

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import (
	"fmt"
	"io"

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

// removeMember removes a member from a role binding.
func removeMember(w io.Writer, policy *iam.Policy, role, member string) {
	bindings := policy.Bindings
	bindingIndex, memberIndex := -1, -1
	for bIdx := range bindings {
		if bindings[bIdx].Role != role {
			continue
		}
		bindingIndex = bIdx
		for mIdx := range bindings[bindingIndex].Members {
			if bindings[bindingIndex].Members[mIdx] != member {
				continue
			}
			memberIndex = mIdx
			break
		}
	}
	if bindingIndex == -1 {
		fmt.Fprintf(w, "Role %q not found. Member not removed.\n", role)
		return
	}
	if memberIndex == -1 {
		fmt.Fprintf(w, "Role %q found. Member not found.\n", role)
		return
	}

	members := removeIdx(bindings[bindingIndex].Members, memberIndex)
	bindings[bindingIndex].Members = members
	if len(members) == 0 {
		bindings = removeIdx(bindings, bindingIndex)
		policy.Bindings = bindings
	}
	fmt.Fprintf(w, "Role %q found. Member removed.\n", role)
}

// removeIdx removes arr[idx] from arr.
func removeIdx[T any](arr []T, idx int) []T {
	return append(arr[:idx], arr[idx+1:]...)
}

Java

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import com.google.api.services.cloudresourcemanager.v3.model.Binding;
import com.google.api.services.cloudresourcemanager.v3.model.Policy;
import java.util.List;

public class RemoveMember {

  // Removes member from a role; removes binding if binding contains 0 members.
  public static void removeMember(Policy policy) {
    // policy = service.Projects.GetIAmPolicy(new GetIamPolicyRequest(), your-project-id).Execute();

    String role = "roles/existing-role";
    String member = "user:member-to-remove@example.com";

    List<Binding> bindings = policy.getBindings();
    Binding binding = null;
    for (Binding b : bindings) {
      if (b.getRole().equals(role)) {
        binding = b;
      }
    }
    if (binding != null && binding.getMembers().contains(member)) {
      binding.getMembers().remove(member);
      System.out.println("Member " + member + " removed from " + role);
      if (binding.getMembers().isEmpty()) {
        policy.getBindings().remove(binding);
      }
      return;
    }

    System.out.println("Role not found in policy; member not removed");
    return;
  }
}

Python

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def modify_policy_remove_member(policy: dict, role: str, member: str) -> dict:
    """Removes a  member from a role binding."""
    binding = next(b for b in policy["bindings"] if b["role"] == role)
    if "members" in binding and member in binding["members"]:
        binding["members"].remove(member)
    print(binding)
    return policy

Passaggi successivi

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