无法将数据从kafka主题发送到elasticsearch

我正试图使用mongo-get数据从mongoDB到我的kafka主题数据库(作为源(、elasticsearch(作为接收器(和kafka来构建一条数据管道。我已经成功地从mongoDB接收到我的kafka主题的数据。这是从mongoDB 获取的数据示例

{"_id": {"_data": "825E88FED8000000012B022C0100296E5A10044D2CA180FAF94580B30CFA4B3CC80E1546645F696400645E88FED793AFA61A58411B2A0004"}, "operationType": "insert", "clusterTime": {"$timestamp": {"t": 1586036440, "i": 1}}, "fullDocument": {"_id": {"$oid": "5e88fed793afa61a58411b2a"}, "name": "Lefèvre Mathis", "phoneNumber": 87640262, "phoneNumber2": 98462768, "phoneNumber3": 50591075, "email": "LefèvreMathis@gmail.com", "websiteUrl": "www.LefèvreMathis.fr", "legalInformation": {"companyName": "Duval EI", "siren": 7.3887975858196E13, "nic": 28866, "siret": 7.3887975858196E13, "ape": "49.53", "tva": "FR-1173030343", "description": "Blanditiis et placeat voluptas hic et. Quae et autem inventore ut enim fugit. Nihil velit in ut magnam."}, "professionType": {"type": "Hotel", "category": "professionnel"}, "operator": {"name": "Orange"}, "address": [{"city": "Paris", "street": "Quartier Les Halles, Paris 1er Arrondissement, Paris, Île-de-France, France métropolitaine, 75001, France", "zipCode": 75001, "latitude": "48.86330665", "longitude": "2.348370623761905"}], "openingTimeSet": [{"day": "Lundi", "opening": "08:00", "closing": "18:00"}, {"day": "Mardi", "opening": "08:00", "closing": "18:00"}, {"day": "Mercredi", "opening": "08:00", "closing": "18:00"}, {"day": "Jeudi", "opening": "08:00", "closing": "18:00"}, {"day": "Vendredi", "opening": "08:00", "closing": "18:00"}, {"day": "Samedi", "opening": "08:00", "closing": "18:00"}, {"day": "Dimanche", "opening": "08:00", "closing": "18:00"}], "_class": "com.sofrecom.elasticsearch.model.Subscriber"}, "ns": {"db": "elasticsearchApp", "coll": "subscriber"}, "documentKey": {"_id": {"$oid": "5e88fed793afa61a58411b2a"}}}

问题是，当我运行ES接收器连接器时，我会出现以下异常：

Caused by: org.apache.kafka.connect.errors.DataException: Converting byte[] to Kafka Connect data failed due to serialization error: 
at org.apache.kafka.connect.json.JsonConverter.toConnectData(JsonConverter.java:355)
at org.apache.kafka.connect.storage.Converter.toConnectData(Converter.java:86)
at org.apache.kafka.connect.runtime.WorkerSinkTask.lambda$convertAndTransformRecord$1(WorkerSinkTask.java:485)
at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndRetry(RetryWithToleranceOperator.java:128)
at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndHandleError(RetryWithToleranceOperator.java:162)
... 13 more

Caused by: org.apache.kafka.common.errors.SerializationException: java.io.CharConversionException: Invalid UTF-32 character 0x658b027b (above 0x0010ffff) at char #1, byte #7)

这是我的kafka连接配置：

CONNECT_BOOTSTRAP_SERVERS: kafka:9092
CONNECT_REST_ADVERTISED_HOST_NAME: connect
CONNECT_REST_PORT: 8083
CONNECT_GROUP_ID: compose-connect-group
CONNECT_CONFIG_STORAGE_TOPIC: docker-connect-configs
CONNECT_OFFSET_STORAGE_TOPIC: docker-connect-offsets
CONNECT_STATUS_STORAGE_TOPIC: docker-connect-status
CONNECT_KEY_CONVERTER: org.apache.kafka.connect.json.JsonConverter
CONNECT_VALUE_CONVERTER:  org.apache.kafka.connect.json.JsonConverter
CONNECT_INTERNAL_KEY_CONVERTER: org.apache.kafka.connect.json.JsonConverter
CONNECT_INTERNAL_VALUE_CONVERTER: org.apache.kafka.connect.json.JsonConverter
CONNECT_CONFIG_STORAGE_REPLICATION_FACTOR:  1
CONNECT_OFFSET_STORAGE_REPLICATION_FACTOR:  1
CONNECT_STATUS_STORAGE_REPLICATION_FACTOR:  1
CONNECT_PLUGIN_PATH: '/usr/share/java,/etc/kafka-connect/jars'
CONNECT_CONFLUENT_TOPIC_REPLICATION_FACTOR: 1

我的es接收器连接器：

{ "name": "sink", "config": { "connector.class": "io.confluent.connect.elasticsearch.ElasticsearchSinkConnector", "connection.url": "http://172.21.0.4:9200", "type.name": "subscriber", "topics": "test5.elasticsearchApp.subscriber", "key.ignore": "false","value.converter.schemas.enable": "false","schema.ignore": "true","value.converter":"org.apache.kafka.connect.json.JsonConverter" } }

和mongodb源连接器

{ "name": "mongo-source", "config": { "connector.class": "com.mongodb.kafka.connect.MongoSourceConnector","tasks.max":1,"connection.uri":"mongodb://mongo1:27017,mongo2:27017","database":"elasticsearchApp","collection":"subscriber", "topic.prefix":"test15","value.converter":"org.apache.kafka.connect.storage.StringConverter"} }

当我试图在我的mongoDBConnector中使用json转换器时，我从kafka主题消费时，得到了有效负载的字符串格式

{"schema":{"type":"string","optional":false},"payload":"{"_id": {"_data": "825E89EA94000000012B022C0100296E5A10044D2CA180FAF94580B30CFA4B3CC80E1546645F696400645E89EA94FC56002500157F490004"}, "operationType": "insert", "clusterTime": {"$timestamp": {"t": 1586096788, "i": 1}}, "fullDocument": {"_id": {"$oid": "5e89ea94fc56002500157f49"}, "name": "Lefèvre Mathis", "phoneNumber": 87640262, "phoneNumber2": 98462768, "phoneNumber3": 50591075, "email": "LefèvreMathis@gmail.com", "websiteUrl": "www.LefèvreMathis.fr", "legalInformation": {"companyName": "Duval EI", "siren": 7.3887975858196E13, "nic": 28866, "siret": 7.3887975858196E13, "ape": "49.53", "tva": "FR-1173030343", "description": "Blanditiis et placeat voluptas hic et. Quae et autem inventore ut enim fugit. Nihil velit in ut magnam."}, "professionType": {"type": "Hotel", "category": "professionnel"}, "operator": {"name": "Orange"}, "address": [{"city": "Paris", "street": "Quartier Les Halles, Paris 1er Arrondissement, Paris, Île-de-France, France métropolitaine, 75001, France", "zipCode": 75001, "latitude": "48.86330665", "longitude": "2.348370623761905"}], "openingTimeSet": [{"day": "Lundi", "opening": "08:00", "closing": "18:00"}, {"day": "Mardi", "opening": "08:00", "closing": "18:00"}, {"day": "Mercredi", "opening": "08:00", "closing": "18:00"}, {"day": "Jeudi", "opening": "08:00", "closing": "18:00"}, {"day": "Vendredi", "opening": "08:00", "closing": "18:00"}, {"day": "Samedi", "opening": "08:00", "closing": "18:00"}, {"day": "Dimanche", "opening": "08:00", "closing": "18:00"}], "_class": "com.sofrecom.elasticsearch.model.Subscriber"}, "ns": {"db": "elasticsearchApp", "coll": "subscriber"}, "documentKey": {"_id": {"$oid": "5e89ea94fc56002500157f49"}}}"}

如果您不希望Mongo连接器生成字符串有效负载，请不要使用此选项
```
"value.converter":"org.apache.kafka.connect.storage.StringConverter"
```
在接收器中需要这个，因为在主题的JSON中同时有schema和payload
```
"value.converter.schemas.enable": "true"
```
您需要使用Elasticsearch索引映射来解析字符串，因为Connect不会为您这样做。

我不确定Mongo连接器中是否存在错误。从未使用过它，但我认为JSON Comverter应该可以工作，或者至少是Avro。

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