aboutsummaryrefslogtreecommitdiffstats
path: root/yt/cpp/mapreduce/interface/format.cpp
blob: e29cfd33f525ff8feddff54b7c326fb72e23b138 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
#include "format.h"
#include "protobuf_format.h"

#include "errors.h"

#include <google/protobuf/descriptor.h>

namespace NYT {

TTableSchema CreateTableSchema(
    const ::google::protobuf::Descriptor& messageDescriptor,
    bool keepFieldsWithoutExtension)
{
    return NDetail::CreateTableSchemaImpl(messageDescriptor, keepFieldsWithoutExtension);
}

////////////////////////////////////////////////////////////////////////////////

TFormat::TFormat(const TNode& config)
    : Config(config)
{ }


TFormat TFormat::Protobuf(
    const TVector<const ::google::protobuf::Descriptor*>& descriptors,
    bool withDescriptors)
{
    if (withDescriptors) {
        return TFormat(NDetail::MakeProtoFormatConfigWithDescriptors(descriptors));
    } else {
        return TFormat(NDetail::MakeProtoFormatConfigWithTables(descriptors));
    }
}

TFormat TFormat::YsonText()
{
    TNode config("yson");
    config.Attributes()("format", "text");
    return TFormat(config);
}

TFormat TFormat::YsonBinary()
{
    TNode config("yson");
    config.Attributes()("format", "binary");
    return TFormat(config);
}

TFormat TFormat::YaMRLenval()
{
    TNode config("yamr");
    config.Attributes()("lenval", true)("has_subkey", true);
    return TFormat(config);
}

TFormat TFormat::Json()
{
    return TFormat(TNode("json"));
}

TFormat TFormat::Dsv()
{
    return TFormat(TNode("dsv"));
}

bool TFormat::IsTextYson() const
{
    if (!Config.IsString() || Config.AsString() != "yson") {
        return false;
    }
    if (!Config.HasAttributes()) {
        return false;
    }
    const auto& attributes = Config.GetAttributes();
    if (!attributes.HasKey("format") || attributes["format"] != TNode("text")) {
        return false;
    }
    return true;
}

bool TFormat::IsProtobuf() const
{
    return Config.IsString() && Config.AsString() == "protobuf";
}

bool TFormat::IsYamredDsv() const
{
    return Config.IsString() && Config.AsString() == "yamred_dsv";
}

static TString FormatName(const TFormat& format)
{
    if (!format.Config.IsString()) {
        Y_ABORT_UNLESS(format.Config.IsUndefined());
        return "<undefined>";
    }
    return format.Config.AsString();
}

TYamredDsvAttributes TFormat::GetYamredDsvAttributes() const
{
    if (!IsYamredDsv()) {
        ythrow TApiUsageError() << "Cannot get yamred_dsv attributes for " << FormatName(*this) << " format";
    }
    TYamredDsvAttributes attributes;

    const auto& nodeAttributes = Config.GetAttributes();
    {
        const auto& keyColumns = nodeAttributes["key_column_names"];
        if (!keyColumns.IsList()) {
            ythrow yexception() << "Ill-formed format: key_column_names is of non-list type: " << keyColumns.GetType();
        }
        for (auto& column : keyColumns.AsList()) {
            if (!column.IsString()) {
                ythrow yexception() << "Ill-formed format: key_column_names: " << column.GetType();
            }
            attributes.KeyColumnNames.push_back(column.AsString());
        }
    }

    if (nodeAttributes.HasKey("subkey_column_names")) {
        const auto& subkeyColumns = nodeAttributes["subkey_column_names"];
        if (!subkeyColumns.IsList()) {
            ythrow yexception() << "Ill-formed format: subkey_column_names is not a list: " << subkeyColumns.GetType();
        }
        for (const auto& column : subkeyColumns.AsList()) {
            if (!column.IsString()) {
                ythrow yexception() << "Ill-formed format: non-string inside subkey_key_column_names: " << column.GetType();
            }
            attributes.SubkeyColumnNames.push_back(column.AsString());
        }
    }

    return attributes;
}

////////////////////////////////////////////////////////////////////////////////

} // namespace NYT