Manage GCP Secure Source Manager Repository IAM Access

The gcp:securesourcemanager/repositoryIamMember:RepositoryIamMember resource, part of the Pulumi GCP provider, grants IAM roles to identities on Secure Source Manager repositories, controlling who can read, write, or administer repository contents. This guide focuses on three capabilities: non-authoritative single-member grants, authoritative multi-member bindings, and complete policy replacement.

IAM resources for Secure Source Manager come in three variants: RepositoryIamMember (non-authoritative, adds one member), RepositoryIamBinding (authoritative for a role, manages all members), and RepositoryIamPolicy (authoritative for the entire policy). RepositoryIamPolicy cannot be used with the other two resources, as they will conflict over policy state. The examples are intentionally small. Combine them with your own repository infrastructure and identity management.

Grant a role to a single member

Most IAM configurations start by granting a specific role to one user or service account without affecting other members who already have that role.

import * as pulumi from "@pulumi/pulumi";
import * as gcp from "@pulumi/gcp";

const member = new gcp.securesourcemanager.RepositoryIamMember("member", {
    project: _default.project,
    location: _default.location,
    repositoryId: _default.repositoryId,
    role: "roles/securesourcemanager.repoAdmin",
    member: "user:jane@example.com",
});

import pulumi
import pulumi_gcp as gcp

member = gcp.securesourcemanager.RepositoryIamMember("member",
    project=default["project"],
    location=default["location"],
    repository_id=default["repositoryId"],
    role="roles/securesourcemanager.repoAdmin",
    member="user:jane@example.com")

package main

import (
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/securesourcemanager"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := securesourcemanager.NewRepositoryIamMember(ctx, "member", &securesourcemanager.RepositoryIamMemberArgs{
			Project:      pulumi.Any(_default.Project),
			Location:     pulumi.Any(_default.Location),
			RepositoryId: pulumi.Any(_default.RepositoryId),
			Role:         pulumi.String("roles/securesourcemanager.repoAdmin"),
			Member:       pulumi.String("user:jane@example.com"),
		})
		if err != nil {
			return err
		}
		return nil
	})
}

using System.Collections.Generic;
using System.Linq;
using Pulumi;
using Gcp = Pulumi.Gcp;

return await Deployment.RunAsync(() => 
{
    var member = new Gcp.SecureSourceManager.RepositoryIamMember("member", new()
    {
        Project = @default.Project,
        Location = @default.Location,
        RepositoryId = @default.RepositoryId,
        Role = "roles/securesourcemanager.repoAdmin",
        Member = "user:jane@example.com",
    });

});

package generated_program;

import com.pulumi.Context;
import com.pulumi.Pulumi;
import com.pulumi.core.Output;
import com.pulumi.gcp.securesourcemanager.RepositoryIamMember;
import com.pulumi.gcp.securesourcemanager.RepositoryIamMemberArgs;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;

public class App {
    public static void main(String[] args) {
        Pulumi.run(App::stack);
    }

    public static void stack(Context ctx) {
        var member = new RepositoryIamMember("member", RepositoryIamMemberArgs.builder()
            .project(default_.project())
            .location(default_.location())
            .repositoryId(default_.repositoryId())
            .role("roles/securesourcemanager.repoAdmin")
            .member("user:jane@example.com")
            .build());

    }
}

resources:
  member:
    type: gcp:securesourcemanager:RepositoryIamMember
    properties:
      project: ${default.project}
      location: ${default.location}
      repositoryId: ${default.repositoryId}
      role: roles/securesourcemanager.repoAdmin
      member: user:jane@example.com

The member property specifies the identity receiving access, using formats like “user:jane@example.com” or “serviceAccount:app@project.iam.gserviceaccount.com”. The role property defines the permission level, such as “roles/securesourcemanager.repoAdmin” for full repository control. This resource is non-authoritative: it adds the member to the role without removing others.

Grant a role to multiple members at once

When multiple users or service accounts need the same permissions, binding them together ensures they’re managed as a group.

import * as pulumi from "@pulumi/pulumi";
import * as gcp from "@pulumi/gcp";

const binding = new gcp.securesourcemanager.RepositoryIamBinding("binding", {
    project: _default.project,
    location: _default.location,
    repositoryId: _default.repositoryId,
    role: "roles/securesourcemanager.repoAdmin",
    members: ["user:jane@example.com"],
});

import pulumi
import pulumi_gcp as gcp

binding = gcp.securesourcemanager.RepositoryIamBinding("binding",
    project=default["project"],
    location=default["location"],
    repository_id=default["repositoryId"],
    role="roles/securesourcemanager.repoAdmin",
    members=["user:jane@example.com"])

package main

import (
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/securesourcemanager"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := securesourcemanager.NewRepositoryIamBinding(ctx, "binding", &securesourcemanager.RepositoryIamBindingArgs{
			Project:      pulumi.Any(_default.Project),
			Location:     pulumi.Any(_default.Location),
			RepositoryId: pulumi.Any(_default.RepositoryId),
			Role:         pulumi.String("roles/securesourcemanager.repoAdmin"),
			Members: pulumi.StringArray{
				pulumi.String("user:jane@example.com"),
			},
		})
		if err != nil {
			return err
		}
		return nil
	})
}

using System.Collections.Generic;
using System.Linq;
using Pulumi;
using Gcp = Pulumi.Gcp;

return await Deployment.RunAsync(() => 
{
    var binding = new Gcp.SecureSourceManager.RepositoryIamBinding("binding", new()
    {
        Project = @default.Project,
        Location = @default.Location,
        RepositoryId = @default.RepositoryId,
        Role = "roles/securesourcemanager.repoAdmin",
        Members = new[]
        {
            "user:jane@example.com",
        },
    });

});

package generated_program;

import com.pulumi.Context;
import com.pulumi.Pulumi;
import com.pulumi.core.Output;
import com.pulumi.gcp.securesourcemanager.RepositoryIamBinding;
import com.pulumi.gcp.securesourcemanager.RepositoryIamBindingArgs;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;

public class App {
    public static void main(String[] args) {
        Pulumi.run(App::stack);
    }

    public static void stack(Context ctx) {
        var binding = new RepositoryIamBinding("binding", RepositoryIamBindingArgs.builder()
            .project(default_.project())
            .location(default_.location())
            .repositoryId(default_.repositoryId())
            .role("roles/securesourcemanager.repoAdmin")
            .members("user:jane@example.com")
            .build());

    }
}

resources:
  binding:
    type: gcp:securesourcemanager:RepositoryIamBinding
    properties:
      project: ${default.project}
      location: ${default.location}
      repositoryId: ${default.repositoryId}
      role: roles/securesourcemanager.repoAdmin
      members:
        - user:jane@example.com

The members property takes a list of identities that will all receive the specified role. Unlike RepositoryIamMember, this resource is authoritative for the role: it replaces the member list for that role, removing any members not in the list. Other roles on the repository remain unchanged.

Replace the entire IAM policy from a data source

Organizations with centralized IAM policies can define bindings in one place and apply them authoritatively to repositories.

import * as pulumi from "@pulumi/pulumi";
import * as gcp from "@pulumi/gcp";

const admin = gcp.organizations.getIAMPolicy({
    bindings: [{
        role: "roles/securesourcemanager.repoAdmin",
        members: ["user:jane@example.com"],
    }],
});
const policy = new gcp.securesourcemanager.RepositoryIamPolicy("policy", {
    project: _default.project,
    location: _default.location,
    repositoryId: _default.repositoryId,
    policyData: admin.then(admin => admin.policyData),
});

import pulumi
import pulumi_gcp as gcp

admin = gcp.organizations.get_iam_policy(bindings=[{
    "role": "roles/securesourcemanager.repoAdmin",
    "members": ["user:jane@example.com"],
}])
policy = gcp.securesourcemanager.RepositoryIamPolicy("policy",
    project=default["project"],
    location=default["location"],
    repository_id=default["repositoryId"],
    policy_data=admin.policy_data)

package main

import (
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/organizations"
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/securesourcemanager"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		admin, err := organizations.LookupIAMPolicy(ctx, &organizations.LookupIAMPolicyArgs{
			Bindings: []organizations.GetIAMPolicyBinding{
				{
					Role: "roles/securesourcemanager.repoAdmin",
					Members: []string{
						"user:jane@example.com",
					},
				},
			},
		}, nil)
		if err != nil {
			return err
		}
		_, err = securesourcemanager.NewRepositoryIamPolicy(ctx, "policy", &securesourcemanager.RepositoryIamPolicyArgs{
			Project:      pulumi.Any(_default.Project),
			Location:     pulumi.Any(_default.Location),
			RepositoryId: pulumi.Any(_default.RepositoryId),
			PolicyData:   pulumi.String(admin.PolicyData),
		})
		if err != nil {
			return err
		}
		return nil
	})
}

using System.Collections.Generic;
using System.Linq;
using Pulumi;
using Gcp = Pulumi.Gcp;

return await Deployment.RunAsync(() => 
{
    var admin = Gcp.Organizations.GetIAMPolicy.Invoke(new()
    {
        Bindings = new[]
        {
            new Gcp.Organizations.Inputs.GetIAMPolicyBindingInputArgs
            {
                Role = "roles/securesourcemanager.repoAdmin",
                Members = new[]
                {
                    "user:jane@example.com",
                },
            },
        },
    });

    var policy = new Gcp.SecureSourceManager.RepositoryIamPolicy("policy", new()
    {
        Project = @default.Project,
        Location = @default.Location,
        RepositoryId = @default.RepositoryId,
        PolicyData = admin.Apply(getIAMPolicyResult => getIAMPolicyResult.PolicyData),
    });

});

package generated_program;

import com.pulumi.Context;
import com.pulumi.Pulumi;
import com.pulumi.core.Output;
import com.pulumi.gcp.organizations.OrganizationsFunctions;
import com.pulumi.gcp.organizations.inputs.GetIAMPolicyArgs;
import com.pulumi.gcp.securesourcemanager.RepositoryIamPolicy;
import com.pulumi.gcp.securesourcemanager.RepositoryIamPolicyArgs;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;

public class App {
    public static void main(String[] args) {
        Pulumi.run(App::stack);
    }

    public static void stack(Context ctx) {
        final var admin = OrganizationsFunctions.getIAMPolicy(GetIAMPolicyArgs.builder()
            .bindings(GetIAMPolicyBindingArgs.builder()
                .role("roles/securesourcemanager.repoAdmin")
                .members("user:jane@example.com")
                .build())
            .build());

        var policy = new RepositoryIamPolicy("policy", RepositoryIamPolicyArgs.builder()
            .project(default_.project())
            .location(default_.location())
            .repositoryId(default_.repositoryId())
            .policyData(admin.policyData())
            .build());

    }
}

resources:
  policy:
    type: gcp:securesourcemanager:RepositoryIamPolicy
    properties:
      project: ${default.project}
      location: ${default.location}
      repositoryId: ${default.repositoryId}
      policyData: ${admin.policyData}
variables:
  admin:
    fn::invoke:
      function: gcp:organizations:getIAMPolicy
      arguments:
        bindings:
          - role: roles/securesourcemanager.repoAdmin
            members:
              - user:jane@example.com

The policyData property accepts a complete IAM policy document, typically retrieved from getIAMPolicy. This resource replaces the entire policy on the repository, removing any bindings not defined in the policy data. It cannot coexist with RepositoryIamBinding or RepositoryIamMember resources on the same repository.

Beyond these examples

These snippets focus on specific IAM grant patterns: single-member and multi-member role grants, and authoritative policy replacement. They’re intentionally minimal rather than complete access control configurations.

The examples reference pre-existing infrastructure such as Secure Source Manager repositories and GCP projects with configured locations. They focus on granting access rather than provisioning repositories or managing identity providers.

To keep things focused, common IAM patterns are omitted, including:

Conditional IAM bindings (condition property)
Custom role definitions
Federated identity configuration
Policy retrieval via data sources

These omissions are intentional: the goal is to illustrate how each IAM resource type is wired, not provide drop-in access control modules. See the Secure Source Manager RepositoryIamMember resource reference for all available configuration options.

Let's manage GCP Secure Source Manager Repository IAM Access

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Frequently Asked Questions

Resource Selection & Conflicts

What's the difference between RepositoryIamPolicy, RepositoryIamBinding, and RepositoryIamMember?

RepositoryIamPolicy is authoritative and replaces the entire IAM policy. RepositoryIamBinding is authoritative for a single role, replacing all members for that role while preserving other roles. RepositoryIamMember is non-authoritative, adding a single member to a role without affecting other members.

Can I use these IAM resources together?

RepositoryIamPolicy cannot be used with RepositoryIamBinding or RepositoryIamMember, as they will conflict. However, RepositoryIamBinding and RepositoryIamMember can be used together only if they don’t manage the same role.

Which IAM resource should I use?

Use RepositoryIamPolicy for full control over all permissions. Use RepositoryIamBinding to manage all members for specific roles. Use RepositoryIamMember to add individual members without affecting existing permissions.

Identity & Role Configuration

What identity formats can I use for the member parameter?

Supported formats include allUsers, allAuthenticatedUsers, user:{email}, serviceAccount:{email}, group:{email}, domain:{domain}, projectOwner:projectid, projectEditor:projectid, projectViewer:projectid, and federated identities using principal:// URIs.

How do I specify a custom role?

Custom roles must use the format [projects|organizations]/{parent-name}/roles/{role-name}, such as projects/my-project/roles/my-custom-role.

Can I change the role, member, or repository after creation?

No, all key properties (role, member, repositoryId, location, project) are immutable and require resource replacement if changed.

Using a different cloud?

Explore security guides for other cloud providers:

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