save the project ID somewhere

[12rambau]

the project Id is the key to many functionalities of geetools and unfortunately there is an inconsistance in how this information get treated from GEE side itself (see https://issuetracker.google.com/issues/325020447 for more context).

When GEE is Initializedusing a personnal account I can get back the project_id information using the following:

import ee 

ee.initialize(project="ee-borntobealive")
project_id = ee.data._cloud_api_user_project

But this operation is not possible using a private key as shown in this example:

import ee
import os
import json
import tempfile
from pathlib import Path
import httplib2

# extract the environment variables data
private_key = os.environ["EARTHENGINE_SERVICE_ACCOUNT"]
ee_user = json.loads(private_key)["client_email"]

# connect to GEE using a temp file to avoid writing the key to disk
with tempfile.TemporaryDirectory() as temp_dir:
    file = Path(temp_dir) / "private_key.json"
    file.write_text(private_key)
    credentials = ee.ServiceAccountCredentials(ee_user, str(file))
    ee.Initialize(credentials=credentials, http_transport=httplib2.Http())
project_id = ee.data._cloud_api_user_project

• The extention init method should save this information in a meaningful place
• the Asset object shoud be able to rely on it to access current project_id