【发布时间】:2015-03-25 14:06:49
【问题描述】:
我正在尝试使用 kite-sdk morphline 模块将 JSON 转换为 Avro。在玩了之后,我能够使用简单的模式(没有复杂的数据类型)将 JSON 转换为 Avro。
然后我更进一步,修改了 Avro 架构,如下所示 (subrec.avsc)。如您所见,架构由一个子记录组成。
当我尝试使用 morphlines.conf 和 subrec.avsc 将 JSON 转换为 Avro 时,它失败了。
不知何故 JSON 路径 "/record_type[]/alert/action" 没有被 toAvro 函数翻译。
morphlines.conf
morphlines : [
{
id : morphline1
importCommands : ["org.kitesdk.**"]
commands : [
# Read the JSON blob
{ readJson: {} }
{ logError { format : "record: {}", args : ["@{}"] } }
# Extract JSON
{ extractJsonPaths { flatten: false, paths: {
"/record_type[]/alert/action" : /alert/action,
"/record_type[]/alert/signature_id" : /alert/signature_id,
"/record_type[]/alert/signature" : /alert/signature,
"/record_type[]/alert/category" : /alert/category,
"/record_type[]/alert/severity" : /alert/severity
} } }
{ logError { format : "EXTRACTED THIS : {}", args : ["@{}"] } }
{ extractJsonPaths { flatten: false, paths: {
timestamp : /timestamp,
event_type : /event_type,
source_ip : /src_ip,
source_port : /src_port,
destination_ip : /dest_ip,
destination_port : /dest_port,
protocol : /proto,
} } }
# Create Avro according to schema
{ logError { format : "WE GO TO AVRO"} }
{ toAvro { schemaFile : /etc/flume/conf/conf.empty/subrec.avsc } }
# Create Avro container
{ logError { format : "WE GO TO BINARY"} }
{ writeAvroToByteArray { format: containerlessBinary } }
{ logError { format : "DONE!!!"} }
]
}
]
还有subrec.avsc
{
"type" : "record",
"name" : "Event",
"fields" : [ {
"name" : "timestamp",
"type" : "string"
}, {
"name" : "event_type",
"type" : "string"
}, {
"name" : "source_ip",
"type" : "string"
}, {
"name" : "source_port",
"type" : "int"
}, {
"name" : "destination_ip",
"type" : "string"
}, {
"name" : "destination_port",
"type" : "int"
}, {
"name" : "protocol",
"type" : "string"
}, {
"name": "record_type",
"type" : ["null", {
"name" : "alert",
"type" : "record",
"fields" : [ {
"name" : "action",
"type" : "string"
}, {
"name" : "signature_id",
"type" : "int"
}, {
"name" : "signature",
"type" : "string"
}, {
"name" : "category",
"type" : "string"
}, {
"name" : "severity",
"type" : "int"
}
] } ]
} ]
}
{ logError { format : "EXTRACTED THIS : {}", args : ["@{}"] } } 上的输出我输出如下:
[{
/record_type[]/alert / action = [allowed],
/record_type[]/alert / category = [],
/record_type[]/alert / severity = [3],
/record_type[]/alert / signature = [GeoIP from NL,
Netherlands],
/record_type[]/alert / signature_id = [88006],
_attachment_body = [{
"timestamp": "2015-03-23T07:42:01.303046",
"event_type": "alert",
"src_ip": "1.1.1.1",
"src_port": 18192,
"dest_ip": "46.231.41.166",
"dest_port": 62004,
"proto": "TCP",
"alert": {
"action": "allowed",
"gid": "1",
"signature_id": "88006",
"rev": "1",
"signature" : "GeoIP from NL, Netherlands ",
"category" : ""
"severity" : "3"
}
}],
_attachment_mimetype=[json/java + memory],
basename = [simple_eve.json]
}]
【问题讨论】: