Los permisos y la AWS CDK

bucket.grantRead(function);

bucket.grantRead(function);

bucket.grant_read(function)

bucket.grantRead(function);

bucket.GrantRead(function);

const grant = bucket.grantRead(lambda);
const custom = new CustomResource(...);
custom.node.addDependency(grant);

const grant = bucket.grantRead(lambda);
const custom = new CustomResource(...);
custom.node.addDependency(grant);

grant = bucket.grant_read(function)
custom = CustomResource(...)
custom.node.add_dependency(grant)

Grant grant = bucket.grantRead(function);
CustomResource custom = new CustomResource(...);
custom.node.addDependency(grant);

var grant = bucket.GrantRead(function);
var custom = new CustomResource(...);
custom.node.AddDependency(grant);

import * as iam from 'aws-cdk-lib/aws-iam';

const role = new iam.Role(this, 'Role', {
  assumedBy: new iam.ServicePrincipal('ec2.amazonaws.com'),   // required
});

const iam = require('aws-cdk-lib/aws-iam');

const role = new iam.Role(this, 'Role', {
  assumedBy: new iam.ServicePrincipal('ec2.amazonaws.com')   // required
});

import aws_cdk.aws_iam as iam
    
role = iam.Role(self, "Role",
          assumed_by=iam.ServicePrincipal("ec2.amazonaws.com")) # required

import software.amazon.awscdk.services.iam.Role;
import software.amazon.awscdk.services.iam.ServicePrincipal;

Role role = Role.Builder.create(this, "Role")
        .assumedBy(new ServicePrincipal("ec2.amazonaws.com")).build();

using Amazon.CDK.AWS.IAM;

var role = new Role(this, "Role", new RoleProps
{
    AssumedBy = new ServicePrincipal("ec2.amazonaws.com"),   // required
});

role.addToPolicy(new iam.PolicyStatement({
  effect: iam.Effect.DENY,
  resources: [bucket.bucketArn, otherRole.roleArn],
  actions: ['ec2:SomeAction', 's3:AnotherAction'],
  conditions: {StringEquals: {
    'ec2:AuthorizedService': 'codebuild.amazonaws.com',
}}}));

role.addToPolicy(new iam.PolicyStatement({
  effect: iam.Effect.DENY,
  resources: [bucket.bucketArn, otherRole.roleArn],
  actions: ['ec2:SomeAction', 's3:AnotherAction'],
  conditions: {StringEquals: {
    'ec2:AuthorizedService': 'codebuild.amazonaws.com'
}}}));

role.add_to_policy(iam.PolicyStatement(
    effect=iam.Effect.DENY,
    resources=[bucket.bucket_arn, other_role.role_arn],
    actions=["ec2:SomeAction", "s3:AnotherAction"],
    conditions={"StringEquals": {
        "ec2:AuthorizedService": "codebuild.amazonaws.com"}}
))

role.addToPolicy(PolicyStatement.Builder.create()
        .effect(Effect.DENY)
        .resources(Arrays.asList(bucket.getBucketArn(), otherRole.getRoleArn()))
        .actions(Arrays.asList("ec2:SomeAction", "s3:AnotherAction"))
        .conditions(java.util.Map.of(    // Map.of requires Java 9 or later
            "StringEquals", java.util.Map.of(
                "ec2:AuthorizedService", "codebuild.amazonaws.com")))
        .build());

role.AddToPolicy(new PolicyStatement(new PolicyStatementProps
{
    Effect = Effect.DENY,
    Resources = new string[] { bucket.BucketArn, otherRole.RoleArn },
    Actions = new string[] { "ec2:SomeAction", "s3:AnotherAction" },
    Conditions = new Dictionary<string, object>
    {
        ["StringEquals"] = new Dictionary<string, string>
        {
            ["ec2:AuthorizedService"] = "codebuild.amazonaws.com"
        }
    }
}));

import * as codebuild from 'aws-cdk-lib/aws-codebuild';

// imagine roleOrUndefined is a function that might return a Role object
// under some conditions, and undefined under other conditions
const someRole: iam.IRole | undefined = roleOrUndefined();

const project = new codebuild.Project(this, 'Project', {
  // if someRole is undefined, the Project creates a new default role, 
  // trusting the codebuild.amazonaws.com service principal
  role: someRole,
});

const codebuild = require('aws-cdk-lib/aws-codebuild');

// imagine roleOrUndefined is a function that might return a Role object
// under some conditions, and undefined under other conditions
const someRole = roleOrUndefined();

const project = new codebuild.Project(this, 'Project', {
  // if someRole is undefined, the Project creates a new default role, 
  // trusting the codebuild.amazonaws.com service principal
  role: someRole
});

import aws_cdk.aws_codebuild as codebuild

# imagine role_or_none is a function that might return a Role object
# under some conditions, and None under other conditions
some_role = role_or_none();

project = codebuild.Project(self, "Project",
# if role is None, the Project creates a new default role, 
# trusting the codebuild.amazonaws.com service principal
role=some_role)

import software.amazon.awscdk.services.iam.Role;
import software.amazon.awscdk.services.codebuild.Project;

// imagine roleOrNull is a function that might return a Role object
// under some conditions, and null under other conditions
Role someRole = roleOrNull();

// if someRole is null, the Project creates a new default role, 
// trusting the codebuild.amazonaws.com service principal
Project project = Project.Builder.create(this, "Project")
        .role(someRole).build();

using Amazon.CDK.AWS.CodeBuild;

// imagine roleOrNull is a function that might return a Role object
// under some conditions, and null under other conditions
var someRole = roleOrNull();

// if someRole is null, the Project creates a new default role, 
// trusting the codebuild.amazonaws.com service principal
var project = new Project(this, "Project", new ProjectProps
{
    Role = someRole
});

// project is imported into the CDK application
const project = codebuild.Project.fromProjectName(this, 'Project', 'ProjectName');

// project is imported, so project.role is undefined, and this call has no effect
project.addToRolePolicy(new iam.PolicyStatement({
  effect: iam.Effect.ALLOW,   // ... and so on defining the policy
}));

// project is imported into the CDK application
const project = codebuild.Project.fromProjectName(this, 'Project', 'ProjectName');

// project is imported, so project.role is undefined, and this call has no effect
project.addToRolePolicy(new iam.PolicyStatement({
  effect: iam.Effect.ALLOW   // ... and so on defining the policy
}));

# project is imported into the CDK application
project = codebuild.Project.from_project_name(self, 'Project', 'ProjectName')

# project is imported, so project.role is undefined, and this call has no effect
project.add_to_role_policy(iam.PolicyStatement(
  effect=iam.Effect.ALLOW,   # ... and so on defining the policy
)

// project is imported into the CDK application
Project project = Project.fromProjectName(this, "Project", "ProjectName");

// project is imported, so project.getRole() is null, and this call has no effect
project.addToRolePolicy(PolicyStatement.Builder.create()
        .effect(Effect.ALLOW)   // .. and so on defining the policy
        .build();

// project is imported into the CDK application
var project = Project.FromProjectName(this, "Project", "ProjectName");

// project is imported, so project.role is null, and this call has no effect
project.AddToRolePolicy(new PolicyStatement(new PolicyStatementProps
{
    Effect = Effect.ALLOW, // ... and so on defining the policy 
}));

bucket.addToResourcePolicy(new iam.PolicyStatement({
  effect: iam.Effect.ALLOW,
  actions: ['s3:SomeAction'],
  resources: [bucket.bucketArn],
  principals: [role]
}));

bucket.addToResourcePolicy(new iam.PolicyStatement({
  effect: iam.Effect.ALLOW,
  actions: ['s3:SomeAction'],
  resources: [bucket.bucketArn],
  principals: [role]
}));

bucket.add_to_resource_policy(iam.PolicyStatement(
    effect=iam.Effect.ALLOW,
    actions=["s3:SomeAction"],
    resources=[bucket.bucket_arn],
    principals=role))

bucket.addToResourcePolicy(PolicyStatement.Builder.create()
        .effect(Effect.ALLOW)
        .actions(Arrays.asList("s3:SomeAction"))
        .resources(Arrays.asList(bucket.getBucketArn()))
        .principals(Arrays.asList(role))
        .build());

bucket.AddToResourcePolicy(new PolicyStatement(new PolicyStatementProps
{
    Effect = Effect.ALLOW,
    Actions = new string[] { "s3:SomeAction" },
    Resources = new string[] { bucket.BucketArn },
    Principals = new IPrincipal[] { role }
}));