Add support for specifying the actions when a Flow is created by the user.
The user could either:
(a) Specify each action per Flow Entry (when the Flow Entries are provided
by the user).
(b) Specify the additional actions (apart of ACTION_OUTPUT) for the
first Flow Entry. E.g., if the Flow Entry is overwriting various
fields. Those actions are stored in the Flow Path header, so
they can be used after the Flow Entries are created by
the ONOS Shortest Path computation.
diff --git a/src/main/java/net/onrc/onos/ofcontroller/util/FlowEntryActions.java b/src/main/java/net/onrc/onos/ofcontroller/util/FlowEntryActions.java
new file mode 100644
index 0000000..46f638d
--- /dev/null
+++ b/src/main/java/net/onrc/onos/ofcontroller/util/FlowEntryActions.java
@@ -0,0 +1,146 @@
+package net.onrc.onos.ofcontroller.util;
+
+import java.util.ArrayList;
+
+import org.codehaus.jackson.annotate.JsonProperty;
+
+/**
+ * The class representing multiple Flow Entry actions.
+ *
+ * A set of Flow Entry actions need to be applied to each packet.
+ */
+public class FlowEntryActions {
+ private ArrayList<FlowEntryAction> actions; // The Flow Entry Actions
+
+ /**
+ * Default constructor.
+ */
+ public FlowEntryActions() {
+ actions = new ArrayList<FlowEntryAction>();
+ }
+
+ /**
+ * Constructor from a string.
+ *
+ * The string has the following form:
+ * [[type=XXX action=XXX];[type=XXX action=XXX];...;]
+ *
+ * @param actionsStr the set of actions as a string.
+ */
+ public FlowEntryActions(String actionsStr) {
+ this.fromString(actionsStr);
+ }
+
+ /**
+ * Copy constructor.
+ *
+ * @param other the object to copy from.
+ */
+ public FlowEntryActions(FlowEntryActions other) {
+ actions = new ArrayList<FlowEntryAction>();
+
+ for (FlowEntryAction action : other.actions) {
+ FlowEntryAction newAction = new FlowEntryAction(action);
+ actions.add(newAction);
+ }
+ }
+
+ /**
+ * Get the Flow Entry Actions.
+ *
+ * @return the Flow Entry Actions.
+ */
+ @JsonProperty("actions")
+ public ArrayList<FlowEntryAction> actions() {
+ return actions;
+ }
+
+ /**
+ * Set the Flow Entry Actions.
+ *
+ * @param actions the Flow Entry Actions to set.
+ */
+ @JsonProperty("actions")
+ public void setActions(ArrayList<FlowEntryAction> actions) {
+ this.actions = actions;
+ }
+
+ /**
+ * Add a Flow Entry Action.
+ *
+ * @param FlowEntryAction the Flow Entry Action to add.
+ */
+ public void addAction(FlowEntryAction flowEntryAction) {
+ actions.add(flowEntryAction);
+ }
+
+ /**
+ * Test whether the set of actions is empty.
+ *
+ * @return true if the set of actions is empty, otherwise false.
+ */
+ public Boolean isEmpty() {
+ return actions.isEmpty();
+ }
+
+ /**
+ * Convert the set of actions to a string.
+ *
+ * The string has the following form:
+ * [[type=XXX action=XXX];[type=XXX action=XXX];...;]
+ *
+ * @return the set of actions as a string.
+ */
+ @Override
+ public String toString() {
+ String ret = "[";
+ for (FlowEntryAction action : actions) {
+ ret += action.toString() + ";";
+ }
+ ret += "]";
+
+ return ret;
+ }
+
+ /**
+ * Convert a string to a set of actions.
+ *
+ * The string has the following form:
+ * [[type=XXX action=XXX];[type=XXX action=XXX];...;]
+ *
+ * @param actionsStr the set of actions as a string.
+ */
+ public void fromString(String actionsStr) {
+ String decode = actionsStr;
+
+ actions = new ArrayList<FlowEntryAction>();
+
+ if (decode.isEmpty())
+ return; // Nothing to do
+
+ // Remove the '[' and ']' in the beginning and the end of the string
+ if ((decode.length() > 1) && (decode.charAt(0) == '[') &&
+ (decode.charAt(decode.length() - 1) == ']')) {
+ decode = decode.substring(1, decode.length() - 1);
+ } else {
+ throw new IllegalArgumentException("Invalid action string");
+ }
+
+ // Split the string, and decode each action
+ String[] parts = decode.split(";");
+ for (int i = 0; i < parts.length; i++) {
+ decode = parts[i];
+ if ((decode == null) || decode.isEmpty())
+ continue;
+ FlowEntryAction flowEntryAction = null;
+ try {
+ flowEntryAction = new FlowEntryAction(decode);
+ } catch (IllegalArgumentException e) {
+ // TODO: Ignore invalid actions for now
+ continue;
+ }
+ if (flowEntryAction != null)
+ actions.add(flowEntryAction);
+ }
+ }
+}