Method _retrieve_credentials_using

awscli/botocore/credentials.py:1095–1130

(self, credential_process)

        )

    def _retrieve_credentials_using(self, credential_process):
        # We're not using shell=True, so we need to pass the
        # command and all arguments as a list.
        process_list = compat_shell_split(credential_process)
        with original_ld_library_path():
            p = self._popen(
                process_list, stdout=subprocess.PIPE, stderr=subprocess.PIPE
            )
            stdout, stderr = p.communicate()
        if p.returncode != 0:
            raise CredentialRetrievalError(
                provider=self.METHOD, error_msg=stderr.decode('utf-8')
            )
        parsed = botocore.compat.json.loads(stdout.decode('utf-8'))
        version = parsed.get('Version', '<Version key not provided>')
        if version != 1:
            raise CredentialRetrievalError(
                provider=self.METHOD,
                error_msg=(
                    f"Unsupported version '{version}' for credential process "
                    "provider, supported versions: 1"
                ),
            )
        try:
            return {
                'access_key': parsed['AccessKeyId'],
                'secret_key': parsed['SecretAccessKey'],
                'token': parsed.get('SessionToken'),
                'expiry_time': parsed.get('Expiration'),
                'account_id': self._get_account_id(parsed),
            }
        except KeyError as e:
            raise CredentialRetrievalError(
                provider=self.METHOD,
                error_msg=f"Missing required key in response: {e}",
            )

    @property
    def _credential_process(self):