cic-stack/apps/cic-ussd/cic_ussd/metadata/user.py

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# standard imports
import json
import logging
import os
# third-party imports
import requests
from cic_types.models.person import generate_metadata_pointer, Person
# local imports
from cic_ussd.chain import Chain
from cic_ussd.metadata import make_request
from cic_ussd.metadata.signer import Signer
from cic_ussd.redis import cache_data
logg = logging.getLogger()
class UserMetadata:
"""
:cvar base_url:
:type base_url:
"""
base_url = None
def __init__(self, identifier: bytes):
"""
:param identifier:
:type identifier:
"""
self. headers = {
'X-CIC-AUTOMERGE': 'server',
'Content-Type': 'application/json'
}
self.identifier = identifier
self.metadata_pointer = generate_metadata_pointer(
identifier=self.identifier,
cic_type='cic.person'
)
if self.base_url:
self.url = os.path.join(self.base_url, self.metadata_pointer)
def create(self, data: dict):
try:
data = json.dumps(data).encode('utf-8')
result = make_request(method='POST', url=self.url, data=data, headers=self.headers)
metadata = result.content
self.edit(data=metadata, engine='pgp')
logg.info(f'Get sign material response status: {result.status_code}')
result.raise_for_status()
except requests.exceptions.HTTPError as error:
raise RuntimeError(error)
def edit(self, data: bytes, engine: str):
"""
:param data:
:type data:
:param engine:
:type engine:
:return:
:rtype:
"""
cic_meta_signer = Signer()
signature = cic_meta_signer.sign_digest(data=data)
algorithm = cic_meta_signer.get_operational_key().get('algo')
formatted_data = {
'm': data.decode('utf-8'),
's': {
'engine': engine,
'algo': algorithm,
'data': signature,
'digest': json.loads(data).get('digest'),
}
}
formatted_data = json.dumps(formatted_data).encode('utf-8')
try:
result = make_request(method='PUT', url=self.url, data=formatted_data, headers=self.headers)
logg.info(f'Signed content submission status: {result.status_code}.')
result.raise_for_status()
except requests.exceptions.HTTPError as error:
raise RuntimeError(error)
def query(self):
result = make_request(method='GET', url=self.url)
status = result.status_code
logg.info(f'Get latest data status: {status}')
try:
if status == 200:
response_data = result.content
data = json.loads(response_data.decode())
# validate data
person = Person()
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deserialized_person = person.deserialize(person_data=json.loads(data))
cache_data(key=self.metadata_pointer, data=json.dumps(deserialized_person.serialize()))
elif status == 404:
logg.info('The data is not available and might need to be added.')
result.raise_for_status()
except requests.exceptions.HTTPError as error:
raise RuntimeError(error)