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2 | 2 | using Enyim.Caching.Memcached.Results.Extensions;
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3 | 3 | using Enyim.Caching.Memcached.Results.Helpers;
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4 | 4 | using Enyim.Caching.Memcached.Results;
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| 5 | +using System.Buffers.Binary; |
5 | 6 |
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6 | 7 | namespace Enyim.Caching.Memcached.Protocol.Binary
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7 | 8 | {
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8 |
| - public class MutatorOperation : BinarySingleItemOperation, IMutatorOperation |
9 |
| - { |
10 |
| - private ulong defaultValue; |
11 |
| - private ulong delta; |
12 |
| - private uint expires; |
13 |
| - private MutationMode mode; |
14 |
| - private ulong result; |
15 |
| - |
16 |
| - public MutatorOperation(MutationMode mode, string key, ulong defaultValue, ulong delta, uint expires) |
17 |
| - : base(key) |
18 |
| - { |
19 |
| - if (delta < 0) throw new ArgumentOutOfRangeException("delta", "delta must be >= 0"); |
20 |
| - |
21 |
| - this.defaultValue = defaultValue; |
22 |
| - this.delta = delta; |
23 |
| - this.expires = expires; |
24 |
| - this.mode = mode; |
25 |
| - } |
26 |
| - |
27 |
| - protected unsafe void UpdateExtra(BinaryRequest request) |
28 |
| - { |
29 |
| - byte[] extra = new byte[20]; |
30 |
| - |
31 |
| - fixed (byte* buffer = extra) |
32 |
| - { |
33 |
| - BinaryConverter.EncodeUInt64(this.delta, buffer, 0); |
34 |
| - |
35 |
| - BinaryConverter.EncodeUInt64(this.defaultValue, buffer, 8); |
36 |
| - BinaryConverter.EncodeUInt32(this.expires, buffer, 16); |
37 |
| - } |
38 |
| - |
39 |
| - request.Extra = new ArraySegment<byte>(extra); |
40 |
| - } |
41 |
| - |
42 |
| - protected override BinaryRequest Build() |
43 |
| - { |
44 |
| - var request = new BinaryRequest((OpCode)this.mode) |
45 |
| - { |
46 |
| - Key = this.Key, |
47 |
| - Cas = this.Cas |
48 |
| - }; |
49 |
| - |
50 |
| - this.UpdateExtra(request); |
51 |
| - |
52 |
| - return request; |
53 |
| - } |
54 |
| - |
55 |
| - protected override IOperationResult ProcessResponse(BinaryResponse response) |
56 |
| - { |
57 |
| - var result = new BinaryOperationResult(); |
58 |
| - var status = response.StatusCode; |
59 |
| - this.StatusCode = status; |
60 |
| - |
61 |
| - if (status == 0) |
62 |
| - { |
63 |
| - var data = response.Data; |
64 |
| - if (data.Count != 8) |
65 |
| - return result.Fail("Result must be 8 bytes long, received: " + data.Count, new InvalidOperationException()); |
66 |
| - |
67 |
| - this.result = BinaryConverter.DecodeUInt64(data.Array, data.Offset); |
68 |
| - |
69 |
| - return result.Pass(); |
70 |
| - } |
71 |
| - |
72 |
| - var message = ResultHelper.ProcessResponseData(response.Data); |
73 |
| - return result.Fail(message); |
74 |
| - } |
75 |
| - |
76 |
| - MutationMode IMutatorOperation.Mode |
77 |
| - { |
78 |
| - get { return this.mode; } |
79 |
| - } |
80 |
| - |
81 |
| - ulong IMutatorOperation.Result |
82 |
| - { |
83 |
| - get { return this.result; } |
84 |
| - } |
85 |
| - } |
| 9 | + public class MutatorOperation : BinarySingleItemOperation, IMutatorOperation |
| 10 | + { |
| 11 | + private readonly ulong defaultValue; |
| 12 | + private readonly ulong delta; |
| 13 | + private readonly uint expires; |
| 14 | + private readonly MutationMode mode; |
| 15 | + private ulong result; |
| 16 | + |
| 17 | + public MutatorOperation(MutationMode mode, string key, ulong defaultValue, ulong delta, uint expires) |
| 18 | + : base(key) |
| 19 | + { |
| 20 | + if (delta < 0) throw new ArgumentOutOfRangeException("delta", "delta must be >= 0"); |
| 21 | + |
| 22 | + this.defaultValue = defaultValue; |
| 23 | + this.delta = delta; |
| 24 | + this.expires = expires; |
| 25 | + this.mode = mode; |
| 26 | + } |
| 27 | + |
| 28 | + protected unsafe void UpdateExtra(BinaryRequest request) |
| 29 | + { |
| 30 | + if (mode == MutationMode.Touch) |
| 31 | + { |
| 32 | + Span<byte> extra = stackalloc byte[4]; |
| 33 | + BinaryPrimitives.WriteUInt32BigEndian(extra, this.expires); |
| 34 | + request.Extra = new ArraySegment<byte>(extra.ToArray()); |
| 35 | + } |
| 36 | + else |
| 37 | + { |
| 38 | + byte[] extra = new byte[20]; |
| 39 | + |
| 40 | + fixed (byte* buffer = extra) |
| 41 | + { |
| 42 | + BinaryConverter.EncodeUInt64(this.delta, buffer, 0); |
| 43 | + |
| 44 | + BinaryConverter.EncodeUInt64(this.defaultValue, buffer, 8); |
| 45 | + BinaryConverter.EncodeUInt32(this.expires, buffer, 16); |
| 46 | + } |
| 47 | + |
| 48 | + request.Extra = new ArraySegment<byte>(extra); |
| 49 | + } |
| 50 | + } |
| 51 | + |
| 52 | + protected override BinaryRequest Build() |
| 53 | + { |
| 54 | + var request = new BinaryRequest((OpCode)this.mode) |
| 55 | + { |
| 56 | + Key = this.Key, |
| 57 | + Cas = this.Cas |
| 58 | + }; |
| 59 | + |
| 60 | + this.UpdateExtra(request); |
| 61 | + |
| 62 | + return request; |
| 63 | + } |
| 64 | + |
| 65 | + protected override IOperationResult ProcessResponse(BinaryResponse response) |
| 66 | + { |
| 67 | + var result = new BinaryOperationResult(); |
| 68 | + var status = response.StatusCode; |
| 69 | + this.StatusCode = status; |
| 70 | + |
| 71 | + if (status == 0) |
| 72 | + { |
| 73 | + if (mode != MutationMode.Touch) |
| 74 | + { |
| 75 | + var data = response.Data; |
| 76 | + if (data.Count != 8) |
| 77 | + return result.Fail("Result must be 8 bytes long, received: " + data.Count, new InvalidOperationException()); |
| 78 | + |
| 79 | + this.result = BinaryConverter.DecodeUInt64(data.Array, data.Offset); |
| 80 | + } |
| 81 | + |
| 82 | + return result.Pass(); |
| 83 | + } |
| 84 | + |
| 85 | + var message = ResultHelper.ProcessResponseData(response.Data); |
| 86 | + return result.Fail(message); |
| 87 | + } |
| 88 | + |
| 89 | + MutationMode IMutatorOperation.Mode |
| 90 | + { |
| 91 | + get { return this.mode; } |
| 92 | + } |
| 93 | + |
| 94 | + ulong IMutatorOperation.Result |
| 95 | + { |
| 96 | + get { return this.result; } |
| 97 | + } |
| 98 | + } |
86 | 99 | }
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87 | 100 |
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88 | 101 | #region [ License information ]
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89 | 102 | /* ************************************************************
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90 | 103 | *
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91 |
| - * Copyright (c) 2010 Attila Kiskó, enyim.com |
| 104 | + * Copyright (c) 2010 Attila Kisk? enyim.com |
92 | 105 | *
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93 | 106 | * Licensed under the Apache License, Version 2.0 (the "License");
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94 | 107 | * you may not use this file except in compliance with the License.
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