bitbake: fetch2: allow fetchers to forward the mirrors management

This commit is necessary to introduce proxy fetchers and do not modify
the behavior of existing fetchers.

This commit allows fetchers to forwards the "try_mirrors" functions to
a proxy fetcher.

(Bitbake rev: 462c9a2b368a1720da276310b1d5d0423b7cefea)

Signed-off-by: Jean-Marie LEMETAYER <jean-marie.lemetayer@savoirfairelinux.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/fetch2/__init__.py

@@ -1565,6 +1565,12 @@ class FetchMethod(object):
         """
         return True
 
+    def try_mirrors(self, fetch, urldata, d, mirrors, check=False):
+        """
+        Try to use a mirror
+        """
+        return try_mirrors(fetch, d, urldata, mirrors, check)
+
     def checkstatus(self, fetch, urldata, d):
         """
         Check the status of a URL
@@ -1679,7 +1685,7 @@ class Fetch(object):
                 elif m.try_premirror(ud, self.d):
                     logger.debug(1, "Trying PREMIRRORS")
                     mirrors = mirror_from_string(self.d.getVar('PREMIRRORS'))
-                    localpath = try_mirrors(self, self.d, ud, mirrors, False)
+                    localpath = m.try_mirrors(self, ud, self.d, mirrors)
                     if localpath:
                         try:
                             # early checksum verification so that if the checksum of the premirror
@@ -1728,7 +1734,7 @@ class Fetch(object):
                             m.clean(ud, self.d)
                         logger.debug(1, "Trying MIRRORS")
                         mirrors = mirror_from_string(self.d.getVar('MIRRORS'))
-                        localpath = try_mirrors(self, self.d, ud, mirrors)
+                        localpath = m.try_mirrors(self, ud, self.d, mirrors)
 
                 if not localpath or ((not os.path.exists(localpath)) and localpath.find("*") == -1):
                     if firsterr:
@@ -1766,14 +1772,14 @@ class Fetch(object):
             logger.debug(1, "Testing URL %s", u)
             # First try checking uri, u, from PREMIRRORS
             mirrors = mirror_from_string(self.d.getVar('PREMIRRORS'))
-            ret = try_mirrors(self, self.d, ud, mirrors, True)
+            ret = m.try_mirrors(self, ud, self.d, mirrors, True)
             if not ret:
                 # Next try checking from the original uri, u
                 ret = m.checkstatus(self, ud, self.d)
                 if not ret:
                     # Finally, try checking uri, u, from MIRRORS
                     mirrors = mirror_from_string(self.d.getVar('MIRRORS'))
-                    ret = try_mirrors(self, self.d, ud, mirrors, True)
+                    ret = m.try_mirrors(self, ud, self.d, mirrors, True)
 
             if not ret:
                 raise FetchError("URL %s doesn't work" % u, u)