-
Notifications
You must be signed in to change notification settings - Fork 28k
/
CSVOptions.scala
138 lines (107 loc) · 4.8 KB
/
CSVOptions.scala
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
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.spark.sql.execution.datasources.csv
import java.nio.charset.StandardCharsets
import java.util.Locale
import org.apache.commons.lang3.time.FastDateFormat
import org.apache.spark.internal.Logging
import org.apache.spark.sql.catalyst.util.{CaseInsensitiveMap, CompressionCodecs, ParseModes}
private[csv] class CSVOptions(@transient private val parameters: CaseInsensitiveMap[String])
extends Logging with Serializable {
def this(parameters: Map[String, String]) = this(CaseInsensitiveMap(parameters))
private def getChar(paramName: String, default: Char): Char = {
val paramValue = parameters.get(paramName)
paramValue match {
case None => default
case Some(null) => default
case Some(value) if value.length == 0 => '\u0000'
case Some(value) if value.length == 1 => value.charAt(0)
case _ => throw new RuntimeException(s"$paramName cannot be more than one character")
}
}
private def getInt(paramName: String, default: Int): Int = {
val paramValue = parameters.get(paramName)
paramValue match {
case None => default
case Some(null) => default
case Some(value) => try {
value.toInt
} catch {
case e: NumberFormatException =>
throw new RuntimeException(s"$paramName should be an integer. Found $value")
}
}
}
private def getBool(paramName: String, default: Boolean = false): Boolean = {
val param = parameters.getOrElse(paramName, default.toString)
if (param == null) {
default
} else if (param.toLowerCase == "true") {
true
} else if (param.toLowerCase == "false") {
false
} else {
throw new Exception(s"$paramName flag can be true or false")
}
}
val delimiter = CSVTypeCast.toChar(
parameters.getOrElse("sep", parameters.getOrElse("delimiter", ",")))
private val parseMode = parameters.getOrElse("mode", "PERMISSIVE")
val charset = parameters.getOrElse("encoding",
parameters.getOrElse("charset", StandardCharsets.UTF_8.name()))
val quote = getChar("quote", '\"')
val escape = getChar("escape", '\\')
val comment = getChar("comment", '\u0000')
val headerFlag = getBool("header")
val inferSchemaFlag = getBool("inferSchema")
val ignoreLeadingWhiteSpaceFlag = getBool("ignoreLeadingWhiteSpace")
val ignoreTrailingWhiteSpaceFlag = getBool("ignoreTrailingWhiteSpace")
// Parse mode flags
if (!ParseModes.isValidMode(parseMode)) {
logWarning(s"$parseMode is not a valid parse mode. Using ${ParseModes.DEFAULT}.")
}
val failFast = ParseModes.isFailFastMode(parseMode)
val dropMalformed = ParseModes.isDropMalformedMode(parseMode)
val permissive = ParseModes.isPermissiveMode(parseMode)
val nullValue = parameters.getOrElse("nullValue", "")
val nanValue = parameters.getOrElse("nanValue", "NaN")
val positiveInf = parameters.getOrElse("positiveInf", "Inf")
val negativeInf = parameters.getOrElse("negativeInf", "-Inf")
val compressionCodec: Option[String] = {
val name = parameters.get("compression").orElse(parameters.get("codec"))
name.map(CompressionCodecs.getCodecClassName)
}
// Uses `FastDateFormat` which can be direct replacement for `SimpleDateFormat` and thread-safe.
val dateFormat: FastDateFormat =
FastDateFormat.getInstance(parameters.getOrElse("dateFormat", "yyyy-MM-dd"), Locale.US)
val timestampFormat: FastDateFormat =
FastDateFormat.getInstance(
parameters.getOrElse("timestampFormat", "yyyy-MM-dd'T'HH:mm:ss.SSSZZ"), Locale.US)
val maxColumns = getInt("maxColumns", 20480)
val maxCharsPerColumn = getInt("maxCharsPerColumn", -1)
val escapeQuotes = getBool("escapeQuotes", true)
val maxMalformedLogPerPartition = getInt("maxMalformedLogPerPartition", 10)
val quoteAll = getBool("quoteAll", false)
val inputBufferSize = 128
val isCommentSet = this.comment != '\u0000'
}
object CSVOptions {
def apply(): CSVOptions = new CSVOptions(CaseInsensitiveMap(Map.empty))
def apply(paramName: String, paramValue: String): CSVOptions = {
new CSVOptions(Map(paramName -> paramValue))
}
}