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| # Overview | ||
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| This Kafka Connect connector provides the capability to watch a directory for files and read the data as new files are | ||
| written to the input directory. The RecordProcessor implementation can be overridden so any file type can be supported. | ||
| Currently there is support for delimited files and reading a file line by line. | ||
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| The CSVRecordProcessor supports reading CSV or TSV files. It can convert a CSV on the fly to the strongly typed Kafka | ||
| Connect data types. It currently has support for all of the schema types and logical types that are supported in Kafka 0.10.x. | ||
| If you couple this with the Avro converter and Schema Registry by Confluent, you will be able to process csv files to | ||
| strongly typed Avro data in real time. | ||
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| The LineRecordProcessor supports reading a file line by line and emitting the line. | ||
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| # Building on you workstation | ||
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| ``` | ||
| [email protected]:jcustenborder/kafka-connect-spooldir.git | ||
| cd kafka-connect-spooldir | ||
| mvn clean package | ||
| ``` | ||
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| # Running on your workstation | ||
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| # Schema Configuration | ||
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| This connector allows you to either infer a schema with nullable strings from the header row, or you can specify the schema in json format. | ||
| To use the automatic schema generation set ``csv.first.row.as.header=true``, ``csv.schema.from.header=true``, ``csv.schema.from.header.keys=key1,key2``. | ||
| To manually define the schema set ``csv.schema`` to a json representation of the schema. The example below works is for the mock data in the test class. | ||
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| # Configuration options | ||
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| | Name | Description | Type | Default | Valid Values | Importance | | ||
| |-----------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------|-------------------------|--------------------------------------------------------------------------------------------------------------|------------| | ||
| | error.path | The directory to place files in which have error(s). This directory must exist and be writable by the user running Kafka Connect. | string | | | high | | ||
| | finished.path | The directory to place files that have been successfully processed. This directory must exist and be writable by the user running Kafka Connect. | string | | | high | | ||
| | input.file.pattern | Regular expression to check input file names against. This expression must match the entire filename. The equivalent of Matcher.matches(). | string | | | high | | ||
| | input.path | The directory to read files that will be processed. This directory must exist and be writable by the user running Kafka Connect. | string | | | high | | ||
| | record.processor.class | Class that implements RecordProcessor. This class is used to process data as it arrives. | class | | | high | | ||
| | topic | The Kafka topic to write the data to. | string | | | high | | ||
| | halt.on.error | Should the task halt when it encounters an error or continue to the next file. | boolean | true | | high | | ||
| | csv.first.row.as.header | Flag to indicate if the fist row of data contains the header of the file. | boolean | false | | medium | | ||
| | csv.schema | Schema representation in json. | string | "" | | medium | | ||
| | batch.size | The number of records that should be returned with each batch. | int | 1000 | | low | | ||
| | csv.case.sensitive.field.names | Flag to determine if the field names in the header row should be treated as case sensitive. | boolean | false | | low | | ||
| | csv.escape.char | Escape character. | int | 92 | | low | | ||
| | csv.file.charset | Character set to read wth file with. | string | UTF-8 | | low | | ||
| | csv.ignore.leading.whitespace | Sets the ignore leading whitespace setting - if true, white space in front of a quote in a field is ignored. | boolean | true | | low | | ||
| | csv.ignore.quotations | Sets the ignore quotations mode - if true, quotations are ignored. | boolean | false | | low | | ||
| | csv.keep.carriage.return | Flag to determine if the carriage return at the end of the line should be maintained. | boolean | false | | low | | ||
| | csv.null.field.indicator | Indicator to determine how the CSV Reader can determine if a field is null. Valid values are EMPTY_SEPARATORS, EMPTY_QUOTES, BOTH, NEITHER. For more information see http://opencsv.sourceforge.net/apidocs/com/opencsv/enums/CSVReaderNullFieldIndicator.html. | string | NEITHER | ValidEnum{enumClass=CSVReaderNullFieldIndicator, validEnums=[NEITHER, EMPTY_SEPARATORS, EMPTY_QUOTES, BOTH]} | low | | ||
| | csv.parser.timestamp.date.formats | The date formats that are expected in the file. This is a list of strings that will be used to parse the date fields in order. The most accurate date format should be the first in the list. Take a look at the Java documentation for more info. https://docs.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html | list | [yyyy-MM-dd' 'HH:mm:ss] | | low | | ||
| | csv.parser.timestamp.timezone | The timezone that all of the dates will be parsed with. | string | UTC | | low | | ||
| | csv.quote.char | The character that is used to quote a field. This typically happens when the csv.separator.char character is within the data. | int | 34 | | low | | ||
| | csv.schema.from.header | Flag to determine if the schema should be generated based on the header row. | boolean | false | | low | | ||
| | csv.schema.from.header.keys | csv.schema.from.header.keys | list | [] | | low | | ||
| | csv.schema.name | Fully qualified name for the schema. This setting is ignored if csv.schema is set. | string | "" | | low | | ||
| | csv.separator.char | The character that seperates each field. Typically in a CSV this is a , character. A TSV would use \t. | int | 44 | | low | | ||
| | csv.skip.lines | Number of lines to skip in the beginning of the file. | int | 0 | | low | | ||
| | csv.strict.quotes | Sets the strict quotes setting - if true, characters outside the quotes are ignored. | boolean | false | | low | | ||
| | csv.verify.reader | Flag to determine if the reader should be verified. | boolean | true | | low | | ||
| | file.minimum.age.ms | The amount of time in milliseconds after the file was last written to before the file can be processed. | long | 0 | [0,...,9223372036854775807] | low | | ||
| | include.file.metadata | Flag to determine if the metadata about the file should be included. | boolean | false | | low | | ||
| | processing.file.extension | Before a file is processed, it is renamed to indicate that it is currently being processed. This setting is appended to the end of the file. | string | .PROCESSING | ValidPattern{pattern=^.*\..+$} | low | | ||
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