Added differencer and tests

diff --git a/trunk/Pithos.Core.Test/Pithos.Core.Test.csproj b/trunk/Pithos.Core.Test/Pithos.Core.Test.csproj
index 824f409..ceb5edf 100644 (file)
--- a/trunk/Pithos.Core.Test/Pithos.Core.Test.csproj
+++ b/trunk/Pithos.Core.Test/Pithos.Core.Test.csproj
@@ -210,6 +210,7 @@
     <Compile Include="StatusCheckerTest.cs" />
     <Compile Include="MockSettings.cs" />
     <Compile Include="MockStatusKeeper.cs" />
+    <Compile Include="TestDifferencer.cs" />
     <Compile Include="WorkflowFileStatusTest.cs" />
   </ItemGroup>
   <ItemGroup>

diff --git a/trunk/Pithos.Core.Test/TestDifferencer.cs b/trunk/Pithos.Core.Test/TestDifferencer.cs
new file mode 100644 (file)
index 0000000..e0c6c6f
--- /dev/null
+++ b/trunk/Pithos.Core.Test/TestDifferencer.cs
@@ -0,0 +1,124 @@
+// -----------------------------------------------------------------------\r
+// <copyright file="TestDifferencer.cs" company="Microsoft">\r
+// TODO: Update copyright text.\r
+// </copyright>\r
+// -----------------------------------------------------------------------\r
+\r
+using System.Collections;\r
+using NUnit.Framework;\r
+using Pithos.Interfaces;\r
+\r
+namespace Pithos.Core.Test\r
+{\r
+    using System;\r
+    using System.Collections.Generic;\r
+    using System.Linq;\r
+    using System.Text;\r
+    using Pithos.Core.Agents;\r
+    \r
+    [TestFixture]\r
+    public class TestDifferencer\r
+    {\r
+        private ObjectInfo[] _previous;\r
+        private ObjectInfo[] _current;\r
+\r
+        [SetUp]\r
+        public void Setup()\r
+        {\r
+            _previous = new []{\r
+                                new ObjectInfo{Account="acc1",Container="Cont1",Name="Name1",Bytes=123,Hash="aa1",Version=1},\r
+                                new ObjectInfo{Account="acc1",Container="Cont1",Name="Name2",Bytes=123,Hash="aa2",Version=1},\r
+                                new ObjectInfo{Account="acc1",Container="Cont1",Name="Name3",Bytes=123,Hash="aa3",Version=1},\r
+                                new ObjectInfo{Account="acc1",Container="Cont1",Name="Name4",Bytes=123,Hash="aa4",Version=1},\r
+                                new ObjectInfo{Account="acc2",Container="Cont1",Name="Name1",Bytes=123,Hash="aa1",Version=1},\r
+                                new ObjectInfo{Account="acc2",Container="Cont1",Name="Name2",Bytes=123,Hash="aa2",Version=1},\r
+                            };\r
+            _current = new []{\r
+                                new ObjectInfo{Account="acc1",Container="Cont1",Name="Name2",Bytes=123,Hash="aa2",Version=1},\r
+                                new ObjectInfo{Account="acc1",Container="Cont1",Name="Name3",Bytes=123,Hash="aa3",Version=1},\r
+                                new ObjectInfo{Account="acc1",Container="Cont1",Name="Name4",Bytes=1234,Hash="aa45",Version=1},\r
+                                new ObjectInfo{Account="acc1",Container="Cont1",Name="Name5",Bytes=123,Hash="aa5",Version=1},\r
+                                new ObjectInfo{Account="acc2",Container="Cont1",Name="Name1",Bytes=123,Hash="aa1",Version=1},\r
+                                new ObjectInfo{Account="acc2",Container="Cont1",Name="Name2",Bytes=123,Hash="aa2",Version=1},\r
+                           };\r
+            \r
+        }\r
+\r
+        [Test]\r
+        public void when_adding_a_snapshot_for_the_first_time()\r
+        {\r
+            var d1 = new SnapshotDifferencer();            \r
+            var differencer=d1.Post(_previous);\r
+            Assert.That(differencer.Deleted,Is.Empty);\r
+            Assert.That(differencer.Created,Is.EquivalentTo(_previous));\r
+            Assert.That(differencer.Changed,Is.Empty);\r
+            Assert.That(differencer.Unchanged,Is.Empty);\r
+        }\r
+\r
+        [Test]\r
+        public void when_adding_a_second_snapshot_with_a_deletion()\r
+        {\r
+            var d1 = new SnapshotDifferencer();            \r
+            var differencer=d1.Post(_previous).Post(_current);\r
+            var deleted=new[]{new ObjectInfo{Account="acc1",Container="Cont1",Name="Name1",Bytes=123,Hash="aa1",Version=1}};\r
+            Assert.That(differencer.Deleted.ToList(),Is.EquivalentTo(deleted)\r
+                .Using((IEqualityComparer) new ObjectInfoComparer()));\r
+        }\r
+        [Test]\r
+        public void when_adding_a_second_snapshot_with_an_addition()\r
+        {\r
+            var d1 = new SnapshotDifferencer();            \r
+            var differencer=d1.Post(_previous).Post(_current);\r
+            var created = new[] { new ObjectInfo { Account = "acc1", Container = "Cont1", Name = "Name5", Bytes = 123, Hash = "aa5", Version = 1 } };\r
+            Assert.That(differencer.Created.ToList(), Is.EquivalentTo(created)\r
+                .Using((IEqualityComparer)new ObjectInfoComparer()));\r
+        }\r
+        [Test]\r
+        public void when_adding_a_second_snapshot_with_a_change()\r
+        {\r
+            var d1 = new SnapshotDifferencer();            \r
+            var differencer=d1.Post(_previous).Post(_current);\r
+            var changed = new[] { new ObjectInfo { Account = "acc1", Container = "Cont1", Name = "Name4", Bytes = 1234, Hash = "aa45", Version = 1 } };\r
+            Assert.That(differencer.Changed.ToList(), Is.EquivalentTo(changed)\r
+                .Using((IEqualityComparer)new ObjectInfoComparer()));\r
+        }\r
+\r
+        [Test]\r
+        public void when_adding_a_second_snapshot_with_unchanged()\r
+        {\r
+            var d1 = new SnapshotDifferencer();            \r
+            var differencer=d1.Post(_previous).Post(_current);\r
+            var unchanged = new[]\r
+                                {\r
+                                new ObjectInfo{Account="acc1",Container="Cont1",Name="Name2",Bytes=123,Hash="aa2",Version=1},\r
+                                new ObjectInfo{Account="acc1",Container="Cont1",Name="Name3",Bytes=123,Hash="aa3",Version=1},\r
+                                new ObjectInfo{Account="acc2",Container="Cont1",Name="Name1",Bytes=123,Hash="aa1",Version=1},\r
+                                new ObjectInfo{Account="acc2",Container="Cont1",Name="Name2",Bytes=123,Hash="aa2",Version=1},                                    \r
+                                };            \r
+            Assert.That(differencer.Unchanged.ToList(), Is.EquivalentTo(unchanged)\r
+                .Using((IEqualityComparer)new ObjectInfoComparer()));\r
+        }\r
+\r
+        [Test]\r
+        public void when_adding_a_null_first_snapshot()\r
+        {\r
+            var d1 = new SnapshotDifferencer();            \r
+            var differencer=d1.Post(null);\r
+            Assert.That(differencer.Deleted, Is.Empty);\r
+            Assert.That(differencer.Created, Is.Empty);\r
+            Assert.That(differencer.Changed, Is.Empty);\r
+            Assert.That(differencer.Unchanged, Is.Empty);\r
+        }\r
+\r
+        [Test]\r
+        public void when_adding_a_null_second_snapshot()\r
+        {\r
+            var d1 = new SnapshotDifferencer();            \r
+            var differencer=d1.Post(_previous).Post(null);\r
+            Assert.That(differencer.Deleted, Is.EquivalentTo(_previous));\r
+            Assert.That(differencer.Created, Is.Empty);\r
+            Assert.That(differencer.Changed, Is.Empty);\r
+            Assert.That(differencer.Unchanged, Is.Empty);\r
+        }\r
+    }\r
+}\r

diff --git a/trunk/Pithos.Core/Agents/NetworkAgent.cs b/trunk/Pithos.Core/Agents/NetworkAgent.cs
index 123923c..02c0ec7 100644 (file)
--- a/trunk/Pithos.Core/Agents/NetworkAgent.cs
+++ b/trunk/Pithos.Core/Agents/NetworkAgent.cs
@@ -642,20 +642,6 @@ namespace Pithos.Core.Agents
             }
         }
 
-        internal class ObjectInfoComparer:EqualityComparer<ObjectInfo>
-        {
-            public override bool Equals(ObjectInfo x, ObjectInfo y)
-            {
-                return (x.Account == y.Account &&
-                        x.Container == y.Container &&
-                        x.Name == y.Name);
-            }
-
-            public override int GetHashCode(ObjectInfo obj)
-            {
-                return String.Join("/",obj.Account,obj.Container,obj.Name).GetHashCode();
-            }
-        }
 
         Dictionary<string, List<ObjectInfo>> _currentSnapshot = new Dictionary<string, List<ObjectInfo>>();
         Dictionary<string, List<ObjectInfo>> _previousSnapshot = new Dictionary<string, List<ObjectInfo>>();

diff --git a/trunk/Pithos.Core/Agents/ObjectInfoComparer.cs b/trunk/Pithos.Core/Agents/ObjectInfoComparer.cs
new file mode 100644 (file)
index 0000000..744d7d0
--- /dev/null
+++ b/trunk/Pithos.Core/Agents/ObjectInfoComparer.cs
@@ -0,0 +1,34 @@
+// -----------------------------------------------------------------------\r
+// <copyright file="ObjectInfoComparer.cs" company="Microsoft">\r
+// TODO: Update copyright text.\r
+// </copyright>\r
+// -----------------------------------------------------------------------\r
+\r
+using Pithos.Interfaces;\r
+\r
+namespace Pithos.Core.Agents\r
+{\r
+    using System;\r
+    using System.Collections.Generic;\r
+    using System.Linq;\r
+    using System.Text;\r
+\r
+    /// <summary>\r
+    /// TODO: Update summary.\r
+    /// </summary>\r
+    public class ObjectInfoComparer : EqualityComparer<ObjectInfo>\r
+    {\r
+        public override bool Equals(ObjectInfo x, ObjectInfo y)\r
+        {\r
+            return (x.Account == y.Account &&\r
+                    x.Container == y.Container &&\r
+                    x.Name == y.Name);\r
+        }\r
+\r
+        public override int GetHashCode(ObjectInfo obj)\r
+        {\r
+            return String.Join("/", obj.Account, obj.Container, obj.Name).GetHashCode();\r
+        }\r
+    }\r
+\r
+}\r

diff --git a/trunk/Pithos.Core/Agents/SnapshotDifferencer.cs b/trunk/Pithos.Core/Agents/SnapshotDifferencer.cs
new file mode 100644 (file)
index 0000000..e90532f
--- /dev/null
+++ b/trunk/Pithos.Core/Agents/SnapshotDifferencer.cs
@@ -0,0 +1,76 @@
+// -----------------------------------------------------------------------\r
+// <copyright file="SnapshotDifferencer.cs" company="Microsoft">\r
+// TODO: Update copyright text.\r
+// </copyright>\r
+// -----------------------------------------------------------------------\r
+\r
+using Pithos.Interfaces;\r
+\r
+namespace Pithos.Core.Agents\r
+{\r
+    using System;\r
+    using System.Collections.Generic;\r
+    using System.Linq;\r
+    using System.Text;\r
+\r
+    /// <summary>\r
+    /// TODO: Update summary.\r
+    /// </summary>\r
+    public class SnapshotDifferencer\r
+    {\r
+        private IEnumerable<ObjectInfo> _previous;\r
+        private IEnumerable<ObjectInfo> _current;\r
+        private static ObjectInfo[] _empty = new ObjectInfo[0];\r
+        private ObjectInfoComparer _comparer = new ObjectInfoComparer();\r
+\r
+        public SnapshotDifferencer()\r
+        {\r
+            _previous = new List<ObjectInfo>();\r
+            _current= new List<ObjectInfo>();\r
+        }\r
+\r
+\r
+        public SnapshotDifferencer(IEnumerable<ObjectInfo> previous,IEnumerable<ObjectInfo> current  )\r
+        {\r
+            _previous = previous ?? new List<ObjectInfo>();\r
+            _current= current ?? new List<ObjectInfo>();\r
+        }\r
+        public SnapshotDifferencer Post(IEnumerable<ObjectInfo> list)\r
+        {\r
+            return new SnapshotDifferencer(_current,list);\r
+        }\r
+        \r
+        public IEnumerable<ObjectInfo> Deleted\r
+        {\r
+            get { return _previous.Except(_current,_comparer); }\r
+        }\r
+        public IEnumerable<ObjectInfo> Created\r
+        {\r
+            get { return _current.Except(_previous,_comparer); }\r
+        }\r
+        public IEnumerable<ObjectInfo> Changed\r
+        {\r
+            get\r
+            {\r
+                var changes = from newItem in _current \r
+                              let oldItem=_previous.FirstOrDefault(old=>_comparer.Equals(old,newItem))\r
+                              where oldItem !=null &&\r
+                                    newItem.Hash != oldItem.Hash\r
+                              select newItem;\r
+                return changes;\r
+            }\r
+        }\r
+        public IEnumerable<ObjectInfo> Unchanged\r
+        {\r
+            get\r
+            {\r
+                var unChanged = from newItem in _current\r
+                              let oldItem = _previous.FirstOrDefault(old => _comparer.Equals(old, newItem))\r
+                              where oldItem != null &&\r
+                                    newItem.Hash == oldItem.Hash\r
+                              select newItem;\r
+                return unChanged;\r
+            }\r
+        }\r
+    }\r
+}\r

diff --git a/trunk/Pithos.Core/Pithos.Core.csproj b/trunk/Pithos.Core/Pithos.Core.csproj
index fbc4716..fbc984c 100644 (file)
--- a/trunk/Pithos.Core/Pithos.Core.csproj
+++ b/trunk/Pithos.Core/Pithos.Core.csproj
@@ -1,435 +1,437 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
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-       <ProjectGuid>{142AF135-DF30-4563-B0AC-B604235AE874}</ProjectGuid>
-       <OutputType>Library</OutputType>
-       <AppDesignerFolder>Properties</AppDesignerFolder>
-       <RootNamespace>Pithos.Core</RootNamespace>
-       <AssemblyName>Pithos.Core</AssemblyName>
-       <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
-       <FileAlignment>512</FileAlignment>
-       <CodeContractsAssemblyMode>0</CodeContractsAssemblyMode>
-       <TargetFrameworkProfile>Client</TargetFrameworkProfile>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{142AF135-DF30-4563-B0AC-B604235AE874}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Pithos.Core</RootNamespace>
+    <AssemblyName>Pithos.Core</AssemblyName>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <CodeContractsAssemblyMode>0</CodeContractsAssemblyMode>
+    <TargetFrameworkProfile>Client</TargetFrameworkProfile>
   </PropertyGroup>
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   </PropertyGroup>
   <PropertyGroup>
-       <SignAssembly>true</SignAssembly>
+    <SignAssembly>true</SignAssembly>
   </PropertyGroup>
   <PropertyGroup>
-       <AssemblyOriginatorKeyFile>pithos.snk</AssemblyOriginatorKeyFile>
+    <AssemblyOriginatorKeyFile>pithos.snk</AssemblyOriginatorKeyFile>
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