tagion.epochain.EpochChainBlock source code

1 /// \EpochChainBlock.d
2 module tagion.epochain.EpochChainBlock;
3 
4 import tagion.basic.Types : Buffer, FileExtension;
5 import tagion.crypto.SecureInterfaceNet : HashNet;
6 import tagion.crypto.Types : Fingerprint;
7 import tagion.hashchain.HashChainBlock : HashChainBlock;
8 import tagion.hibon.Document;
9 import tagion.hibon.HiBONJSON : JSONString;
10 import tagion.hibon.HiBONRecord : HiBONRecord, exclude, label, recordType;
11 
12 /** @brief File contains class EpochChainBlock
13  */
14 
15 /**
16  * \class EpochChainBlock
17  * Class represents epoch block from recorder chain
18  */
19 
20 @recordType("EpochBlock")
21 @safe class EpochChainBlock : HashChainBlock {
22     /** Fingerprint of this block */
23     @exclude Fingerprint fingerprint;
24     /** Bullseye of DART database */
25     @label("eye") Fingerprint bullseye;
26     /** Fingerprint of the previous block */
27     @label("previous") Fingerprint previous;
28     /** List of the transactions */
29     @label("transactions_list") Document transactions_list;
30 
31     mixin JSONString;
32 
33     /** Ctor creates block from recorder, previous hash and bullseye.
34      *      @param transactions - Document with list of transactions
35      *      @param previous - fingerprint of the previous block
36      *      @param bullseye - bullseye of database
37      *      @param net - hash net
38      */
39     mixin HiBONRecord!(
40             q{
41             private this(
42                 Document transactions,
43                 Fingerprint previous,
44                 Fingerprint bullseye,
45                 const(HashNet) net)
46             {
47                 this.transactions_list = transactions;
48                 this.previous = previous;
49                 this.bullseye = bullseye;
50 
51                 this.fingerprint = net.calcHash(toDoc);
52             }
53 
54             private this(
55                 const(Document) doc,
56                 const(HashNet) net)
57             {
58                 this(doc);
59                 this.fingerprint = net.calcHash(toDoc);
60             }
61         });
62 
63     Fingerprint getHash() const {
64         return this.fingerprint;
65     }
66 
67     Fingerprint getPrevious() const {
68         return this.previous;
69     }
70 }
71 
72 unittest {
73     import std.range : empty;
74     import tagion.crypto.SecureNet : StdHashNet;
75 
76     /// EpochChainBlock_check_getters
77     {
78         import tagion.crypto.SecureNet : StdHashNet;
79 
80         auto hasher = new StdHashNet;
81         Fingerprint bullseye = [1, 2, 3, 4];
82         Fingerprint prev;
83         auto doc = Document();
84         auto item_one = new EpochChainBlock(doc, prev, bullseye, hasher);
85 
86         assert(item_one.bullseye == bullseye);
87         assert(item_one.getPrevious.empty);
88         assert(hasher.calcHash(item_one.toDoc) == item_one.getHash());
89     }
90 
91 }