ndl: allow sequence output for each channel

tools/nv-driver-locator/nv-driver-locator.py

@@ -150,7 +150,7 @@ class CommandNotifier(BaseNotifier):
 
 class BaseChannel(ABC):
     @abstractmethod
-    def get_latest_driver(self):
+    def get_latest_drivers(self):
         pass
 
 
@@ -175,10 +175,10 @@ class GFEClientChannel(BaseChannel):
         self._crd = crd
         self._timeout = timeout
         gfe_get_driver = importlib.import_module('gfe_get_driver')
-        self._get_latest_driver = gfe_get_driver.get_latest_geforce_driver
+        self._get_latest_drivers = gfe_get_driver.get_latest_geforce_driver
 
-    def get_latest_driver(self):
+    def get_latest_drivers(self):
-        res = self._get_latest_driver(notebook=self._notebook,
+        res = self._get_latest_drivers(notebook=self._notebook,
                                       x86_64=self._x86_64,
                                       os_version=self._os_version,
                                       os_build=self._os_build,
@@ -187,6 +187,8 @@ class GFEClientChannel(BaseChannel):
                                       dch=self._dch,
                                       crd=self._crd,
                                       timeout=self._timeout)
+        if res is None:
+            return
         res.update({
             'ChannelAttributes': {
                 'Name': self.name,
@@ -201,7 +203,7 @@ class GFEClientChannel(BaseChannel):
                 'Mobile': self._notebook,
             }
         })
-        return res
+        yield res
 
 
 class NvidiaDownloadsChannel(BaseChannel):
@@ -224,7 +226,7 @@ class NvidiaDownloadsChannel(BaseChannel):
         self._cuda_ver = gnd.CUDAToolkitVersion[cuda_ver]
         self._timeout = timeout
 
-    def get_latest_driver(self):
+    def get_latest_drivers(self):
         latest = self._gnd.get_drivers(os=self._os,
                                        product=self._product,
                                        certlevel=self._certlevel,
@@ -233,7 +235,7 @@ class NvidiaDownloadsChannel(BaseChannel):
                                        cuda_ver=self._cuda_ver,
                                        timeout=self._timeout)
         if not latest:
-            return None
+            return
         res = {
             'DriverAttributes': {
                 'Version': latest['version'],
@@ -253,7 +255,7 @@ class NvidiaDownloadsChannel(BaseChannel):
         }
         if 'download_url' in latest:
             res['DriverAttributes']['DownloadURL'] = latest['download_url']
-        return res
+        yield res
 
 
 class CudaToolkitDownloadsChannel(BaseChannel):
@@ -264,11 +266,11 @@ class CudaToolkitDownloadsChannel(BaseChannel):
         self._gcd = gcd
         self._timeout = timeout
 
-    def get_latest_driver(self):
+    def get_latest_drivers(self):
         latest = self._gcd.get_latest_cuda_tk(timeout=self._timeout)
         if not latest:
-            return None
+            return
-        return {
+        yield {
             'DriverAttributes': {
                 'Version': '???',
                 'Name': latest,
@@ -289,11 +291,11 @@ class VulkanBetaDownloadsChannel(BaseChannel):
         self._os = os
         self._timeout = timeout
 
-    def get_latest_driver(self):
+    def get_latest_drivers(self):
         drivers = vulkan_downloads(timeout=self._timeout)
         for drv in drivers:
             if drv["os"] == self._os:
-                return {
+                yield {
                     'DriverAttributes': {
                         'Version': drv['version'],
                         'Name': drv['name'],
@@ -301,7 +303,7 @@ class VulkanBetaDownloadsChannel(BaseChannel):
                     }
                 }
         else:
-            return None
+            return
 
 
 def parse_args():
@@ -389,26 +391,39 @@ class DriverLocator:
 
     def run(self):
         for ch in self._channels:
+            counter = 0
             try:
-                drv = ch.get_latest_driver()
+                drivers = ch.get_latest_drivers()
             except Exception as e:
-                self._perror("get_latest_driver() invocation failed for "
+                self._perror("get_latest_drivers() invocation failed for "
                              "channel %s. Exception: %s. Continuing..." %
                              (repr(ch.name), str(e)))
                 continue
-            if drv is None:
+
-                self._perror("Driver not found for channel %s" %
-                             (repr(ch.name),))
-                continue
             try:
-                key = self._hasher.hash_object(drv)
+                # Fetch
+                for drv in drivers:
+                    counter += 1
+                    # Hash
+                    try:
+                        key = self._hasher.hash_object(drv)
+                    except Exception as e:
+                        self._perror("Key evaluation failed for channel %s. "
+                                     "Exception: %s" % (repr(name), str(e)))
+                        continue
+
+                    # Notify
+                    if not self._db.check_key(key):
+                        if self._notify_all(drv):
+                            self._db.set_key(key, drv)
             except Exception as e:
-                self._perror("Key evaluation failed for channel %s. "
+                self._perror("channel %s enumeration terminated with exception: %s" %
-                             "Exception: %s" % (repr(name), str(e)))
+                             (repr(name), str(e)))
                 continue
-            if not self._db.check_key(key):
+
-                if self._notify_all(drv):
+            if not counter:
-                    self._db.set_key(key, drv)
+                self._perror("Drivers not found for channel %s" %
+                             (repr(ch.name),))
         return self._ret_code