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Added new feature to force empty values to nil #64

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5344ab6
added support for forcing empty values to nil (NULL in mysql)
lsadehaan Apr 11, 2019
1e5e2a7
Updated Readme.md to include new parameter
lsadehaan Apr 11, 2019
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3 changes: 2 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@ fluent plugin mysql bulk insert is high performance and on duplicate key update

## Note
fluent-plugin-mysql-bulk merged this repository.

This repository now includes the mysql_bulk plugin.
[mysql plugin](README_mysql.md) is deprecated. You should use mysql_bulk.

v0.1.5 only supports fluentd-0.12.X and v0.2.0 only supports fluentd-0.14.X.
Expand Down Expand Up @@ -33,6 +33,7 @@ table|bulk insert table (require)
on_duplicate_key_update|on duplicate key update enable (true:false)
on_duplicate_update_keys|on duplicate key update column, comma separator
transaction_isolation_level|set transaction isolation level(default: nil)
column_names_empty_to_null|Columns for which empty values should be converted to nil (null in SQL)

## Configuration Example(bulk insert)

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10 changes: 10 additions & 0 deletions lib/fluent/plugin/out_mysql_bulk.rb
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Expand Up @@ -54,6 +54,9 @@ class MysqlBulkOutput < Output
config_param :transaction_isolation_level, :enum, list: [:read_uncommitted, :read_committed, :repeatable_read, :serializable], default: nil,
desc: "Set transaction isolation level."

config_param :column_names_empty_to_null, :string, default: nil,
desc: "Columns for which empty values are stored as NULL (no quotes)"

attr_accessor :handler

def initialize
Expand Down Expand Up @@ -100,6 +103,7 @@ def configure(conf)

@column_names = @column_names.split(',').collect(&:strip)
@key_names = @key_names.nil? ? @column_names : @key_names.split(',').collect(&:strip)
@column_names_empty_to_null = @column_names_empty_to_null.split(',').collect(&:strip) if @column_names_empty_to_null
@json_key_names = @json_key_names.split(',') if @json_key_names
@unixtimestamp_key_names = @unixtimestamp_key_names.split(',') if @unixtimestamp_key_names
end
Expand Down Expand Up @@ -200,6 +204,12 @@ def format_proc
if @unixtimestamp_key_names && @unixtimestamp_key_names.include?(key)
value = Time.at(value).strftime('%Y-%m-%d %H:%M:%S')
end

if @column_names_empty_to_null && @column_names_empty_to_null.include?(key)
if value.nil? || value.empty?
value = nil
end
end
end
values << value
end
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