英文:
Role.addToPolicy() only on new Role
问题
addtoPolicy方法在通过名称（或ARN）获取现有角色时为什么不可用？fromRoleName方法应该返回一个Role对象。例如：
let testRole = Role.fromRoleName(this, "test-role", "test-role");
testRole.addToPolicy() // 方法未找到
另一方面，以下代码可行：
testRole = new Role(this, "test-role", {
assumedBy: new ServicePrincipal('lambda.amazonaws.com')
})
testRole.addToPolicy() // 可行
英文:
Why is the addtoPolicy method not available on the Role object if I get an existing role by name (or by arn)? The fromRoleName method should return a Role object. For example:
let testRole=Role.fromRoleName(this,"test-role","test-role");
testRole.addToPolicy()//Method not found
On the other hand, this works:
testRole = new Role(this,"test-role", {
assumedBy: new ServicePrincipal('lambda.amazonaws.com')
})
testRole.addToPolicy() //OK
答案1
得分: 1
这是因为 fromRoleName 返回一个 IRole 接口。这个接口没有 addToPolicy 方法。
英文:
This is because fromRoleName returns an IRole interface. This interface does not have a addToPolicy method.
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