Created LinkService and added unit tests.
Change-Id: I1f2104c873e5a9e2df34074d36cddc823e3b3ec5
diff --git a/incubator/protobuf/services/nb/src/main/proto/net/link/LinkServiceNb.proto b/incubator/protobuf/services/nb/src/main/proto/net/link/LinkServiceNb.proto
new file mode 100644
index 0000000..7a267b7
--- /dev/null
+++ b/incubator/protobuf/services/nb/src/main/proto/net/link/LinkServiceNb.proto
@@ -0,0 +1,90 @@
+syntax="proto3";
+option java_package = "org.onosproject.grpc.nb.net.link";
+
+package nb.net.link;
+
+import "net/LinkProto.proto";
+import "net/ConnectPointProto.proto";
+
+message getLinkCountRequest {
+}
+
+message getLinkCountReply {
+ int32 link_count = 1;
+}
+
+message getActiveLinksRequest {
+}
+
+message getActiveLinksReply {
+ repeated .net.LinkProto link = 1;
+}
+
+message getDeviceLinksRequest {
+ string device_id = 1;
+}
+
+message getDeviceLinksReply {
+ repeated .net.LinkProto link = 1;
+}
+
+message getDeviceEgressLinksRequest {
+ string device_id = 1;
+}
+
+message getDeviceEgressLinksReply {
+ repeated .net.LinkProto link = 1;
+}
+
+message getDeviceIngressLinksRequest {
+ string device_id = 1;
+}
+
+message getDeviceIngressLinksReply {
+ repeated .net.LinkProto link = 1;
+}
+
+message getLinksRequest {
+ .net.ConnectPointProto connect_point = 1;
+}
+
+message getLinksReply {
+ repeated .net.LinkProto link = 1;
+}
+
+message getEgressLinksRequest {
+ .net.ConnectPointProto connect_point = 1;
+}
+
+message getEgressLinksReply {
+ repeated .net.LinkProto link = 1;
+}
+
+message getIngressLinksRequest {
+ .net.ConnectPointProto connect_point = 1;
+}
+
+message getIngressLinksReply {
+ repeated .net.LinkProto link = 1;
+}
+
+message getLinkRequest {
+ .net.ConnectPointProto src = 1;
+ .net.ConnectPointProto dst = 2;
+}
+
+message getLinkReply {
+ .net.LinkProto link = 1;
+}
+
+service LinkService {
+ rpc getLinkCount(getLinkCountRequest) returns(getLinkCountReply) {}
+ rpc getLinks(getLinksRequest) returns(getLinksReply) {}
+ rpc getActiveLinks(getActiveLinksRequest) returns(getActiveLinksReply) {}
+ rpc getDeviceLinks(getDeviceLinksRequest) returns(getDeviceLinksReply) {}
+ rpc getDeviceEgressLinks(getDeviceEgressLinksRequest) returns(getDeviceEgressLinksReply) {}
+ rpc getDeviceIngressLinks(getDeviceIngressLinksRequest) returns(getDeviceIngressLinksReply) {}
+ rpc getEgressLinks(getEgressLinksRequest) returns(getEgressLinksReply) {}
+ rpc getIngressLinks(getIngressLinksRequest) returns(getIngressLinksReply) {}
+ rpc getLink(getLinkRequest) returns(getLinkReply) {}
+}