我正在使用 logstash 创建从 elasticsearch 到 crate.io 的管道。下面是配置。
input{
elasticsearch {
hosts => "<host_name>:9200"
index => "index1"
query => '{ "size":10,"query": {"match_all": {} } }'
}
}
filter{
if!([bench_pose][M_Body_t]) {
mutate{
add_field => {"[bench_pose][M_Body_t]" => null}
}
}
if!([bench_pose][M_Jaw_t]) {
mutate{
add_field => {"[bench_pose][M_Jaw_t]" => null}
}
}
}
output{
jdbc {
driver_class => "io.crate.client.jdbc.CrateDriver"
driver_auto_commit => false
driver_jar_path => "/etc/crate/crate-jdbc-standalone-1.12.3.jar"
connection_string => "crate://<host_ip>:4300"
statement => ["INSERT INTO table_name(path,bench_pose_m_Body_t,bench_pose_m_jaw_t) VALUES(?,?,?)",'path','%{[bench_pose][M_Body_t]}','%{[bench_pose][M_Jaw_t]}']
}
}
源有一个字段“bench_pose”,它是 OBJECT 数据类型,而 bench_pose 下的字段 M_Body_t 和 M_Jaw_t 是 DOUBLE 类型。这些字段在源和目标中都可以为空。此字段在源中的少数文档中具有空值。即使目标表具有 NULLable 字段,当 insert 语句遇到具有 null 值的文档时,也会引发以下错误。
JDBC - Exception. Not retrying. {:exception=>java.sql.SQLException: Validation failed for bench_pose_m_body_t: 'null' cannot be cast to type double
如果我删除过滤器插件,它会引发如下错误。
JDBC - Exception. Not retrying. {:exception=>java.sql.SQLException: Validation failed for bench_pose_m_body_t: '%{[bench_pose][M_Body_t]}' cannot be cast to type double
如果我在插入中硬编码空值并在 crate sql 上运行查询,它会正确执行。如何在 logstash 中解析这些字段中的空值?