Add Codecov User Resolution

Codecov needs to map the Sentry user onto a GitHub identity to be able to link them to the
associated Codecov user. This returns the external_id (GitHub id) and the auth_token to be
encrypted and used for requests to Codecov.

Author: michelletran-codecov

src/sentry/codecov/helper.py

@@ -0,0 +1,47 @@
+from dataclasses import dataclass
+from typing import Any
+
+from sentry.auth.services.access.service import access_service
+from sentry.auth.services.auth import RpcAuthIdentity
+from sentry.identity.services.identity import identity_service
+from sentry.identity.services.identity.model import RpcIdentity
+
+
+@dataclass
+class CodecovUser:
+    external_id: str
+    auth_token: Any
+
+
+def resolve_codecov_user(user_id: int, organization_id: int) -> CodecovUser | None:
+    """Given a Sentry User, and an organization id, find the GitHub user ID and GH access_token
+    that is linked to Codecov's user.
+
+    The user resolution will "fall-through" based on whether the Organization has a GitHub Auth Provider enabled.
+    """
+    # Get identity from an AuthProvider if it's available.
+    auth_provider = access_service.get_auth_provider(organization_id)
+    if auth_provider and auth_provider.provider == "github":
+        auth_identity: RpcAuthIdentity | None = access_service.get_auth_identity_for_user(
+            auth_provider.id, user_id
+        )
+        if auth_identity:
+            return CodecovUser(
+                external_id=str(auth_identity.ident),
+                auth_token=auth_identity.data.get("access_token"),
+            )
+
+    # Get identity from Identity if it's available.
+    identities: list[RpcIdentity] = identity_service.get_user_identities_by_provider_type(
+        user_id=user_id, provider_type="github"
+    )
+    if identities:
+        # Note: There is currently either zero or one GitHub "identity" mapped to a user.
+        identity = identities[0]
+        return CodecovUser(
+            external_id=identity.external_id,
+            auth_token=identity.data.get("access_token"),
+        )
+
+    # No GitHub identities tied to user, return None
+    return None

tests/sentry/codecov/__init__.py

@@ -0,0 +1,43 @@
+from sentry.codecov.helper import CodecovUser, resolve_codecov_user
+from sentry.testutils.cases import TestCase
+from sentry.testutils.silo import all_silo_test
+
+
+@all_silo_test
+class TestCodecovUserResolution(TestCase):
+    def setUp(self):
+        self.organization = self.create_organization()
+        self.user = self.create_user()
+
+    def test_get_auth_provider_identity_for_user(self):
+        auth_provider = self.create_auth_provider(
+            organization_id=self.organization.id, provider="github"
+        )
+        self.create_auth_identity(
+            auth_provider=auth_provider,
+            user=self.user,
+            ident=12345,
+            data={"access_token": "this_is_the_access_token_stored_here"},
+        )
+        assert resolve_codecov_user(self.user.id, self.organization.id) == CodecovUser(
+            external_id="12345", auth_token="this_is_the_access_token_stored_here"
+        )
+
+    def test_get_auth_identity_for_user(self):
+        # Create the Auth Provider to fall through
+        self.create_auth_provider(organization_id=self.organization.id, provider="github")
+
+        identity_provider = self.create_identity_provider(type="github")
+        self.create_identity(
+            user=self.user,
+            identity_provider=identity_provider,
+            external_id="identity_id_12345",
+            data={"access_token": "this_is_the_access_token_stored_here"},
+        )
+
+        assert resolve_codecov_user(self.user.id, self.organization.id) == CodecovUser(
+            external_id="identity_id_12345", auth_token="this_is_the_access_token_stored_here"
+        )
+
+    def test_no_linked_identity(self):
+        assert resolve_codecov_user(self.user.id, self.organization.id) is None