phase1 opa pdp changesHEADmaster

For details on scope and implementation, please check.
https://lf-onap.atlassian.net/wiki/spaces/DW/pages/51150925/OPA+PDP
Code Coverage Total: 70.8%

Issue-ID: POLICY-5156
Change-Id: Ied07ee1596e9f447183fb715baaa68c704a9fe99
Signed-off-by: gururajarao79 <gb00566633@techmahindra.com>

1 files changed, 111 insertions, 0 deletions

diff --git a/pkg/model/mesages.go b/pkg/model/mesages.go
new file mode 100644
index 0000000..a4451d7
--- /dev/null
+++ b/pkg/model/mesages.go
@@ -0,0 +1,111 @@
+// -
+//   ========================LICENSE_START=================================
+//   Copyright (C) 2024: Deutsche Telecom
+//
+//   Licensed under the Apache License, Version 2.0 (the "License");
+//   you may not use this file except in compliance with the License.
+//   You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+//   ========================LICENSE_END===================================
+
+// Defines structure for messages exchanged between PDP and PAP
+// Refer: https://docs.onap.org/projects/onap-policy-parent/en/latest/pap/InternalPapPdp.html
+// for attribute level details of each message.
+package model
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+// PdpMessageType represents the type of PDP message.
+type PdpMessageType int
+
+// Enumerate the possible PDP message types
+// https://github.com/onap/policy-models
+// models-pdp/src/main/java/org/onap/policy/models/pdp/enums/PdpMessageType.java
+const (
+	PDP_STATUS PdpMessageType = iota
+	PDP_UPDATE
+	PDP_STATE_CHANGE
+	PDP_HEALTH_CHECK
+	PDP_TOPIC_CHECK
+)
+
+// String representation of PdpMessageType
+func (msgType PdpMessageType) String() string {
+	switch msgType {
+	case PDP_STATUS:
+		return "PDP_STATUS"
+	case PDP_UPDATE:
+		return "PDP_UPDATE"
+	case PDP_STATE_CHANGE:
+		return "PDP_STATE_CHANGE"
+	case PDP_HEALTH_CHECK:
+		return "PDP_HEALTH_CHECK"
+	case PDP_TOPIC_CHECK:
+		return "PDP_TOPIC_CHECK"
+	default:
+		return fmt.Sprintf("Unknown PdpMessageType: %d", msgType)
+	}
+}
+
+func (p PdpMessageType) MarshalJSON() ([]byte, error) {
+	return json.Marshal(p.String())
+}
+
+// PdpStatus represents the PDP_STATUS message sent from PDP to PAP.
+// https://github.com/onap/policy-models
+// models-pdp/src/main/java/org/onap/policy/models/pdp/concepts/PdpStatus.java
+type PdpStatus struct {
+	MessageType PdpMessageType           `json:"messageName"`
+	PdpType     string                   `json:"pdpType"`
+	State       PdpState                 `json:"state"`
+	Healthy     PdpHealthStatus          `json:"healthy"`
+	Description string                   `json:"description"`
+	PdpResponse *PdpResponseDetails      `json:"response"`
+	Policies    []ToscaConceptIdentifier `json:"policies"`
+	Name        string                   `json:"name"`
+	RequestID   string                   `json:"requestId"`
+	PdpGroup    string                   `json:"pdpGroup"`
+	PdpSubgroup *string                  `json:"pdpSubgroup"`
+	TimestampMs string                   `json:"timestampMs"`
+	DeploymentInstanceInfo string        `json:"deploymentInstanceInfo"`
+}
+
+// PDP_UPDATE sent by PAP to PDP.
+// https://github.com/onap/policy-models
+// models-pdp/src/main/java/org/onap/policy/models/pdp/concepts/PdpUpdate.java
+type PdpUpdate struct {
+	Source                 string                    `json:"source" validate:"required"`
+	PdpHeartbeatIntervalMs int64                     `json:"pdpHeartbeatIntervalMs" validate:"required"`
+	MessageType            string                    `json:"messageName" validate:"required"`
+	PoliciesToBeDeloyed    []string                  `json:"policiesToBeDeployed" validate:"required"`
+	policiesToBeUndeployed []ToscaConceptIdentifier  `json:"policiesToBeUndeployed"`
+	Name                   string                    `json:"name" validate:"required"`
+	TimestampMs            int64                     `json:"timestampMs" validate:"required"`
+	PdpGroup               string                    `json:"pdpGroup" validate:"required"`
+	PdpSubgroup            string                    `json:"pdpSubgroup" validate:"required"`
+	RequestId              string                    `json:"requestId" validate:"required"`
+}
+
+// PDP_STATE_CHANGE sent by PAP to PDP.
+// https://github.com/onap/policy-models
+// models-pdp/src/main/java/org/onap/policy/models/pdp/concepts/PdpStateChange.java
+type PdpStateChange struct {
+	Source      string `json:"source"`
+	State       string `json:"state"`
+	MessageType string `json:"messageName"`
+	Name        string `json:"name"`
+	TimestampMs int64  `json:"timestampMs"`
+	PdpGroup    string `json:"pdpGroup"`
+	PdpSubgroup string `json:"pdpSubgroup"`
+	RequestId   string `json:"requestId"`
+}