(Re)introduce the `can_go_integration()` check on `fetch_config`s

This was removed in aa84e76327 (under its old
`can_go_inbound` name) since everything returned True, but I want to introduce
a FirefoxL10n config that is nightly only, so need to restore these checks.

gui/mozregui/bisection.py

@@ -290,7 +290,7 @@ class BisectRunner(AbstractBuildRunner):
             dialog = QMessageBox.critical
         else:
             fetch_config = self.worker.fetch_config
-            if not getattr(bisection, "no_more_merge", False):
+            if fetch_config.can_go_integration() and not getattr(bisection, "no_more_merge", False):
                 if isinstance(bisection.handler, NightlyHandler):
                     handler = bisection.handler
                     fetch_config.set_repo(fetch_config.get_nightly_repo(handler.bad_date))

mozregression/cli.py

@@ -581,7 +581,7 @@ class Configuration(object):
         if options.bits == 32 and mozinfo.os == "mac":
             self.logger.info("only 64-bit builds available for mac, using " "64-bit builds")
 
-        if fetch_config.tk_needs_auth():
+        if fetch_config.is_integration() and fetch_config.tk_needs_auth():
             creds = tc_authenticate(self.logger)
             fetch_config.set_tk_credentials(creds)
 
@@ -632,6 +632,13 @@ class Configuration(object):
                     )
                 if fetch_config.should_use_archive():
                     self.action = "bisect_nightlies"
+        if (
+            self.action in ("launch_integration", "bisect_integration")
+            and not fetch_config.is_integration()
+        ):
+            raise MozRegressionError(
+                "Unable to bisect integration for `%s`" % fetch_config.app_name
+            )
         options.preferences = preferences(options.prefs_files, options.prefs, self.logger)
         # convert GiB to bytes.
         options.persist_size_limit = int(abs(float(options.persist_size_limit)) * 1073741824)

mozregression/fetch_configs.py

@@ -135,6 +135,18 @@ class CommonConfig(object):
             + r"\.txt$"
         )
 
+    def is_nightly(self):
+        """
+        Returns True if the configuration can be used for nightly fetching.
+        """
+        return isinstance(self, NightlyConfigMixin)
+
+    def is_integration(self):
+        """
+        Returns True if the configuration can be used for integration fetching.
+        """
+        return isinstance(self, IntegrationConfigMixin)
+
     def available_bits(self):
         """
         Returns the no. of bits of the OS for which the application should
@@ -283,6 +295,12 @@ class NightlyConfigMixin(metaclass=ABCMeta):
             )
         return r"^%04d-%02d-%02d-[\d-]+%s/$" % (date.year, date.month, date.day, repo)
 
+    def can_go_integration(self):
+        """
+        Indicate if we can bisect integration from this nightly config.
+        """
+        return self.is_integration()
+
 
 class FirefoxNightlyConfigMixin(NightlyConfigMixin):
     def _get_nightly_repo(self, date):

mozregression/main.py

@@ -133,6 +133,7 @@ class Application(object):
         if result == Bisection.FINISHED:
             LOG.info("Got as far as we can go bisecting nightlies...")
             handler.print_range()
+            if self.fetch_config.can_go_integration():
                 LOG.info("Switching bisection method to taskcluster")
                 self.fetch_config.set_repo(self.fetch_config.get_nightly_repo(handler.bad_date))
                 return self._bisect_integration(