如何在本地计算机上获得Google Cloud API（Firestore）的权限

Question

I am new to fireStore and trying to retrieve document values but it isn't working as I would expect. I am getting a "permission denied" when trying to access through my IDE and golang.

Code:

func TestConnectToCollection(t *testing.T) {

    ctx := context.Background()
    client, err := firestore.NewClient(ctx, "<my-Project-ID>")
    if err != nil {
        // TODO: Handle error.
    }
    defer client.Close()
    doc := client.Doc("profile/test3")
    fmt.Println(doc)
    fmt.Println(doc.ID)

    iter := client.Collection("profile").Documents(ctx)
    for {
        doc, error := iter.Next()
        if error == iterator.Done {
            break
        }
        if error != nil {
            fmt.Println(error.Error())
        } else {
            fmt.Println(doc.Data())
        }
    }
}

Output:

&{0xc0001725a0 projects/<project-id>/databases/(default)/documents/profile/test3 test3}
test3
rpc error: code = PermissionDenied desc = Missing or insufficient permissions.
rpc error: code = PermissionDenied desc = Missing or insufficient permissions.
rpc error: code = PermissionDenied desc = Missing or insufficient permissions.
rpc error: code = PermissionDenied desc = Missing or insufficient permissions.

Firestore rules - I opened up my firestore rules thinking that was the issue.

service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read, write;
    }
  }
}

Answer 1

The docs tell me that Doc() returns a *DocumentRef, a reference to the document. To fetch the document itself, you should call Get() on it, which gives you a *DocumentSnapshot, and finally call Data() on that.

ref := client.Doc("profile/test3")
snap, err := ref.Get(ctx)
// FIXME error checking
data := snap.Data()