355.4.

from("file:input/directory?antInclude=*/.txt")
    .aggregate(constant(true), new ZipAggregationStrategy())
        .completionFromBatchConsumer().eagerCheckCompletion()
        .to("file:output/directory");

from("file:input/directory?antInclude=*/.txt")
    .aggregate(constant(true), new ZipAggregationStrategy())
        .completionFromBatchConsumer().eagerCheckCompletion()
        .setHeader(Exchange.FILE_NAME, constant("reports.zip"))
        .to("file:output/directory");