Add xml_parse_main_metadata_together to python parser examples

1 files changed, 46 insertions, 0 deletions

diff --git a/examples/python/repodata_parsing.py b/examples/python/repodata_parsing.py
index ea517a1..4519518 100755
--- a/examples/python/repodata_parsing.py
+++ b/examples/python/repodata_parsing.py
@@ -211,6 +211,48 @@ def second_method():
     for pkg in packages.values():
         print_package_info(pkg)
 
+def third_method():
+    """Parsing main metadata types (primary, filelists, other) at the same time.
+    This approach significantly reduces memory footprint because we don't need
+    to keep all the packages in memory, user can handle them one by one.
+
+    The API reflects xml_parse_primary/filelists/other except that it handles
+    all of them at the same time.
+
+    """
+    def warningcb(warning_type, message):
+        print("PARSER WARNING: %s" % message)
+        return True
+
+    repomd = cr.Repomd()
+    cr.xml_parse_repomd(os.path.join(REPO_PATH, "repodata/repomd.xml"), repomd, warningcb)
+
+    primary_xml_path   = None
+    filelists_xml_path = None
+    other_xml_path     = None
+    for record in repomd.records:
+        if record.type == "primary":
+            primary_xml_path = os.path.join(REPO_PATH, record.location_href)
+        elif record.type == "filelists":
+            filelists_xml_path = os.path.join(REPO_PATH, record.location_href)
+        elif record.type == "other":
+            other_xml_path = os.path.join(REPO_PATH, record.location_href)
+
+    #
+    # Main XML metadata parsing (primary, filelists, other)
+    #
+
+    def pkgcb(pkg):
+        # Called when whole package entry from all 3 metadata xml files is parsed
+        print_package_info(pkg)
+
+    cr.xml_parse_main_metadata_together(primary_xml_path,
+                                        filelists_xml_path,
+                                        other_xml_path,
+                                        None,
+                                        pkgcb,
+                                        warningcb,
+                                        False)
 
 if __name__ == "__main__":
     print('"All in one shot" method:')
@@ -221,3 +263,7 @@ if __name__ == "__main__":
     print("Callback based method:")
     second_method()
 
+    print()
+
+    print("Streaming callback based method:")
+    third_method()