Particle: implement #to_json and #self.json_create

4 files changed, 87 insertions, 1 deletions

diff --git a/lib/evendoors.rb b/lib/evendoors.rb
index 0a9a941..9c2ae84 100644
--- a/lib/evendoors.rb
+++ b/lib/evendoors.rb
@@ -31,6 +31,7 @@ module EvenDoors
     #
 end
 #
+require 'json'
 require 'evendoors/particle'
 require 'evendoors/spot'
 require 'evendoors/room'
diff --git a/lib/evendoors/particle.rb b/lib/evendoors/particle.rb
index 111ce9a..f532be1 100644
--- a/lib/evendoors/particle.rb
+++ b/lib/evendoors/particle.rb
@@ -6,7 +6,7 @@ module EvenDoors
     #
     class Particle
         #
-        def initialize
+        def initialize o={}
             @ts = Time.now      # creation time
             @src = nil          # Spot where it's originated from
             @dst = nil          # Spot where it's heading to
@@ -19,6 +19,40 @@ module EvenDoors
             @link_fields = []   # the fields used to generate the link value
             @payload = {}       # the actual data carried by this particle
             @merged = []        # list of merged particles
+            #
+            if not o.empty?
+                @ts = Time.parse(o['ts']) if o['ts']
+                @room = o['room']
+                @door = o['door']
+                @action = o['action']
+                @payload = o['payload']||{}
+                @src = EvenDoors::Spin.spin.resolve o['src'] if o['src']
+                @dst = EvenDoors::Spin.spin.resolve o['dst'] if o['dst']
+                o['dsts'].each do |dst| add_dsts dst end if o['dsts']
+                set_link_fields *o['link_fields'] if o['link_fields']
+                o['merged'].each do |merged| merge! Particle.json_create(merged) end if o['merged']
+            end
+        end
+        #
+        def to_json *a
+            {
+                'kls'           => self.class.name,
+                'ts'            => @ts,
+                'src'           => (@src ? @src.path : nil ),
+                'dst'           => (@dst ? @dst.path : nil ),
+                'room'          => @room,
+                'door'          => @door,
+                'action'        => @action,
+                'dsts'          => @dsts,
+                'link_fields'   => @link_fields,
+                'payload'       => @payload,
+                'merged'        => @merged
+            }.to_json *a
+        end
+        #
+        def self.json_create o
+            raise EvenDoors::Exception.new "JSON #{o['kls']} != #{self.name}" if o['kls'] != self.name
+            self.new o
         end
         #
         def reset!
diff --git a/spec/particle_spec.rb b/spec/particle_spec.rb
index a9ccd1d..41ef9a2 100644
--- a/spec/particle_spec.rb
+++ b/spec/particle_spec.rb
@@ -183,6 +183,56 @@ describe EvenDoors::Particle do
         p.link_value.should eql 'v1'
     end
     #
+    it "json from to should work" do
+        EvenDoors::Spin.spin = nil
+        s0 = EvenDoors::Spin.new 'top'
+        s1 = EvenDoors::Room.new 'room0', s0
+        s2 = EvenDoors::Room.new 'room1', s1
+        s3 = EvenDoors::Door.new 'doora', s2
+        s4 = EvenDoors::Door.new 'doorb', s1
+        p0 = EvenDoors::Particle.new
+        p0['k0'] = 'v0'
+        p0['k1'] = 'v1'
+        p0['k2'] = 'v2'
+        p0.src = s3
+        p0.set_link_fields 'k0,k2'
+        p0.add_dsts 'room0/room1/room2/doorX?myaction,door?action,?action'
+        p0.split_dst!
+        p1 = EvenDoors::Particle.new
+        p1['k3'] = 'v6'
+        p1['k4'] = 'v7'
+        p1['k5'] = 'v8'
+        p1.src = s3
+        p1.dst_routed! s4
+        p1.set_link_fields 'k5,k4,k3'
+        p1.add_dsts 'room0/room1/door?action,output?action'
+        p0.merge! p1
+        px = EvenDoors::Particle.json_create( JSON.load( JSON.generate(p0) ) )
+        ((px.ts-p0.ts)<0.5).should be_true
+        px.src.should be s3
+        px.dst.should be_nil
+        px.room.should eql 'room0/room1/room2'
+        px.door.should eql 'doorX'
+        px.action.should eql 'myaction'
+        px.next_dst.should eql 'room0/room1/room2/doorX?myaction'
+        px.link_value.should eql 'v0v2'
+        px['k0'].should eql 'v0'
+        px['k1'].should eql 'v1'
+        px['k2'].should eql 'v2'
+        py = px.merged(0)
+        ((py.ts-p1.ts)<0.5).should be_true
+        py.src.should be s3
+        py.dst.should be s4
+        py.room.should be_nil
+        py.door.should be_nil
+        py.action.should be_nil
+        py.next_dst.should eql 'room0/room1/door?action'
+        py.link_value.should eql 'v8v7v6'
+        py['k3'].should eql 'v6'
+        py['k4'].should eql 'v7'
+        py['k5'].should eql 'v8'
+    end
+    #
 end
 #
 # EOF
diff --git a/spec/room_spec.rb b/spec/room_spec.rb
index a683035..379de32 100644
--- a/spec/room_spec.rb
+++ b/spec/room_spec.rb
@@ -7,6 +7,7 @@ require 'spec_helper'
 describe EvenDoors::Room do
     #
     it "add_spot and add_link correctly" do
+        EvenDoors::Spin.debug_routing = false
         r0 = EvenDoors::Room.new 'room0', nil
         d0 = EvenDoors::Door.new 'door0', r0
         lambda { EvenDoors::Door.new('door0', r0) }.should raise_error(EvenDoors::Exception)