Add support for minimum packet rate rule to the client7.7.0

With the introduction of QoS minimum packet rate rule in Neutron,
it's important to ensure that tools like Heat support it as well.
Unfortunately, Heat still depends on python-neutronclient instead
of python-openstackclient. So even though QoS minimum packet rate
rule support have been proposed for python-openstackclient [1] and
openstacksdk [2], it's still necessary to extend python-neutronclient
code. Since Heat uses only the client part, can skip CLI support.

[1] https://review.opendev.org/c/openstack/python-openstackclient/+/810559
[2] https://review.opendev.org/c/openstack/openstacksdk/+/810364

Partial-Bug: #1922237
See-Also: https://review.opendev.org/785236
Change-Id: I4f16b963a202a476cd3cd2b69c1dd4e4ee6f0fc7

2 files changed, 41 insertions, 0 deletions

diff --git a/neutronclient/v2_0/client.py b/neutronclient/v2_0/client.py
index c264dfd..f318f3c 100644
--- a/neutronclient/v2_0/client.py
+++ b/neutronclient/v2_0/client.py
@@ -625,6 +625,10 @@ class Client(ClientBase):
         "/qos/policies/%s/minimum_bandwidth_rules"
     qos_minimum_bandwidth_rule_path = \
         "/qos/policies/%s/minimum_bandwidth_rules/%s"
+    qos_minimum_packet_rate_rules_path = \
+        "/qos/policies/%s/minimum_packet_rate_rules"
+    qos_minimum_packet_rate_rule_path = \
+        "/qos/policies/%s/minimum_packet_rate_rules/%s"
     qos_rule_types_path = "/qos/rule-types"
     qos_rule_type_path = "/qos/rule-types/%s"
     flavors_path = "/flavors"
@@ -709,6 +713,7 @@ class Client(ClientBase):
                      'policies': 'policy',
                      'bandwidth_limit_rules': 'bandwidth_limit_rule',
                      'minimum_bandwidth_rules': 'minimum_bandwidth_rule',
+                     'minimum_packet_rate_rules': 'minimum_packet_rate_rule',
                      'rules': 'rule',
                      'dscp_marking_rules': 'dscp_marking_rule',
                      'rule_types': 'rule_type',
@@ -1982,6 +1987,35 @@ class Client(ClientBase):
         return self.delete(self.qos_minimum_bandwidth_rule_path %
                            (policy, rule))
 
+    def list_minimum_packet_rate_rules(self, policy_id, retrieve_all=True,
+                                       **_params):
+        """Fetches a list of all minimum packet rate rules for the given policy
+
+        """
+        return self.list('minimum_packet_rate_rules',
+                         self.qos_minimum_packet_rate_rules_path %
+                         policy_id, retrieve_all, **_params)
+
+    def show_minimum_packet_rate_rule(self, rule, policy, body=None):
+        """Fetches information of a certain minimum packet rate rule."""
+        return self.get(self.qos_minimum_packet_rate_rule_path %
+                        (policy, rule), body=body)
+
+    def create_minimum_packet_rate_rule(self, policy, body=None):
+        """Creates a new minimum packet rate rule."""
+        return self.post(self.qos_minimum_packet_rate_rules_path % policy,
+                         body=body)
+
+    def update_minimum_packet_rate_rule(self, rule, policy, body=None):
+        """Updates a minimum packet rate rule."""
+        return self.put(self.qos_minimum_packet_rate_rule_path %
+                        (policy, rule), body=body)
+
+    def delete_minimum_packet_rate_rule(self, rule, policy):
+        """Deletes a minimum packet rate rule."""
+        return self.delete(self.qos_minimum_packet_rate_rule_path %
+                           (policy, rule))
+
     def create_flavor(self, body=None):
         """Creates a new Neutron service flavor."""
         return self.post(self.flavors_path, body=body)
diff --git a/releasenotes/notes/minimum-packet-rate-34576b8fd98a3034.yaml b/releasenotes/notes/minimum-packet-rate-34576b8fd98a3034.yaml
new file mode 100644
index 0000000..7ce33f6
--- /dev/null
+++ b/releasenotes/notes/minimum-packet-rate-34576b8fd98a3034.yaml
@@ -0,0 +1,7 @@
+---
+features:
+  - |
+    Added new client methods for QoS minimum packet rate rule:
+    ``list_minimum_packet_rate_rules``, ``show_minimum_packet_rate_rule``,
+    ``create_minimum_packet_rate_rule``, ``update_minimum_packet_rate_rule``,
+    ``delete_minimum_packet_rate_rule``.