我如何使用 camel-ddb 来持久化 json payload

How do I use camel-ddb to persist json payload

我在 dynamodb (EU-WEST-1) 中创建了 table 并且我创建了一个骆驼路线以将 json 有效载荷放入 table.

我的路线是这样的:

String dynamoDbEndpoint = String.format("aws-ddb://tablename?accessKey=%s&secretKey=RAW(%s)&tableName=tablename&amazonDdbEndpoint=dynamodb.eu-west-1.amazonaws.com",awsAccessKey,awsSecretKey);
from("direct:ipg-queue").to(dynamoDbEndpoint)

我收到错误消息:

com.amazonaws.AmazonServiceException: 1 validation error detected: Value null at 'item' failed to satisfy constraint: Member must not be null (Service: AmazonDynamoDB; Status Code: 400; Error Code: ValidationException; Request ID: 0AVSR54LRTOG3U0TTC5B1QO4KBVV4KQNSO5AEMVJF66Q9ASUAAJG)

有效负载示例是:

{"accountNumber":"123456789","customerName":"John Smith","id":"8422b9e0-739b-4d19-9291-037b68344068"}

表示为字符串。

我在做一些蠢事,但想不通...

原来是我傻了。您只需要在交换中设置 CamelAwdDbItem header。我在 dynamo db 端点之前将以下过程块添加到我的路线,然后我去了...

.unmarshal()
.json(JsonLibrary.Gson, Map.class)
.process((Exchange exchange) -> {
    Map body = (Map) exchange.getIn()
                             .getBody();

    Map<String, AttributeValue> newBody = new HashMap();

    for(Object key : body.keySet()) {
        newBody.put(key.toString(), new AttributeValue(body.get(key).toString()));
    }

    exchange.getIn().setHeader("CamelAwsDdbItem", newBody);
})

我还把 &operation=PutItem 放到端点定义的末尾。