Add appcontext state, status and resource status

Add support in the AppContext for managing an AppContext
(composite app level) status value.
Also adds support for tracking rsync status at the resource
level.
A mechanism for tracking history at the controlling resource
level (i.e. DeploymentGroupIntnt or Cluster) is added, in part,
so that all AppContexts associated can be deleted when
the resource is eventually deleted.

Issue-ID: MULTICLOUD-1042
Change-Id: I3d0a9a97ea45ca11f9f873104476e4b67521e56a
Signed-off-by: Eric Multanen <eric.w.multanen@intel.com>

2 files changed, 57 insertions, 3 deletions

diff --git a/src/orchestrator/pkg/state/state_helper.go b/src/orchestrator/pkg/state/state_helper.go
index a65cea8d..9d59fb75 100644
--- a/src/orchestrator/pkg/state/state_helper.go
+++ b/src/orchestrator/pkg/state/state_helper.go
@@ -16,14 +16,56 @@
 
 package state
 
-import "github.com/onap/multicloud-k8s/src/orchestrator/pkg/appcontext"
+import (
+	"github.com/onap/multicloud-k8s/src/orchestrator/pkg/appcontext"
+	pkgerrors "github.com/pkg/errors"
+)
 
 // GetAppContextFromStateInfo loads the appcontext present in the StateInfo input
-func GetAppContextFromStateInfo(s StateInfo) (appcontext.AppContext, error) {
+func GetAppContextFromId(ctxid string) (appcontext.AppContext, error) {
 	var cc appcontext.AppContext
-	_, err := cc.LoadAppContext(s.ContextId)
+	_, err := cc.LoadAppContext(ctxid)
 	if err != nil {
 		return appcontext.AppContext{}, err
 	}
 	return cc, nil
 }
+
+// GetCurrentStateFromStatInfo gets the last (current) state from StateInfo
+func GetCurrentStateFromStateInfo(s StateInfo) (StateValue, error) {
+	alen := len(s.Actions)
+	if alen == 0 {
+		return StateEnum.Undefined, pkgerrors.Errorf("No state information")
+	}
+	return s.Actions[alen-1].State, nil
+}
+
+// GetLastContextFromStatInfo gets the last (most recent) context id from StateInfo
+func GetLastContextIdFromStateInfo(s StateInfo) string {
+	alen := len(s.Actions)
+	if alen > 0 {
+		return s.Actions[alen-1].ContextId
+	} else {
+		return ""
+	}
+}
+
+// GetContextIdsFromStatInfo return a list of the unique AppContext Ids in the StateInfo
+func GetContextIdsFromStateInfo(s StateInfo) []string {
+	m := make(map[string]string)
+
+	for _, a := range s.Actions {
+		if a.ContextId != "" {
+			m[a.ContextId] = ""
+		}
+	}
+
+	ids := make([]string, len(m))
+	i := 0
+	for k := range m {
+		ids[i] = k
+		i++
+	}
+
+	return ids
+}
diff --git a/src/orchestrator/pkg/state/types.go b/src/orchestrator/pkg/state/types.go
index 25fb60d2..665a1be4 100644
--- a/src/orchestrator/pkg/state/types.go
+++ b/src/orchestrator/pkg/state/types.go
@@ -16,16 +16,27 @@
 
 package state
 
+import "time"
+
 // StateInfo struct is used to maintain the values for state, contextid, (and other)
 // information about resources which can be instantiated via rsync.
+// The last Actions entry holds the current state of the container object.
 type StateInfo struct {
+	Actions []ActionEntry
+}
+
+// ActionEntry is used to keep track of the time an action (e.g. Created, Instantiate, Terminate) was invoked
+// For actions where an AppContext is relevent, the ContextId field will be non-zero length
+type ActionEntry struct {
 	State     StateValue
 	ContextId string
+	TimeStamp time.Time
 }
 
 type StateValue = string
 
 type states struct {
+	Undefined    StateValue
 	Created      StateValue
 	Approved     StateValue
 	Applied      StateValue
@@ -34,6 +45,7 @@ type states struct {
 }
 
 var StateEnum = &states{
+	Undefined:    "Undefined",
 	Created:      "Created",
 	Approved:     "Approved",
 	Applied:      "Applied",