blob: 33e9a37e18de07821441eef86abafbb99e7d6f39 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
/*
* ============LICENSE_START=======================================================
* dcaegen2-collectors-veshv
* ================================================================================
* Copyright (C) 2018-2019 NOKIA
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl
import arrow.core.Option
import org.onap.dcae.collectors.veshv.utils.logging.Logger
import java.io.InputStream
import java.util.Collections.synchronizedMap
/**
* @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
* @since August 2018
*/
class DcaeAppSimulator(private val consumerFactory: ConsumerFactory,
private val messageStreamValidation: MessageStreamValidation) {
private val consumerState: MutableMap<String, ConsumerStateProvider> = synchronizedMap(mutableMapOf())
fun listenToTopics(topicsString: String) = listenToTopics(extractTopics(topicsString))
fun listenToTopics(topics: Set<String>) {
if (topics.isEmpty() || topics.any { it.isBlank() }) {
val message = "Topic list cannot be empty or contain empty elements, topics: $topics"
logger.info { message }
throw IllegalArgumentException(message)
}
logger.info { "Received new configuration. Removing old consumers and creating consumers for topics: $topics" }
synchronized(consumerState) {
consumerState.clear()
consumerState.putAll(consumerFactory.createConsumersForTopics(topics))
}
}
fun state(topic: String) =
consumerState(topic)
.map(ConsumerStateProvider::currentState)
.toEither {
val message = "Failed to return consumer state. No consumer found for topic: $topic"
logger.warn { message }
MissingConsumerException(message)
}
fun resetState(topic: String) =
consumerState(topic)
.map { it.reset() }
.toEither {
val message = "Failed to reset consumer state. No consumer found for topic: $topic"
logger.warn { message }
MissingConsumerException(message)
}
fun validate(jsonDescription: InputStream, topic: String) =
messageStreamValidation.validate(jsonDescription, currentMessages(topic))
private fun consumerState(topic: String) = Option.fromNullable(consumerState[topic])
private fun currentMessages(topic: String): List<ByteArray> =
state(topic).fold({ emptyList() }, { it.consumedMessages })
private fun extractTopics(topicsString: String): Set<String> =
topicsString.removeSurrounding("\"")
.split(",")
.toSet()
companion object {
private val logger = Logger(DcaeAppSimulator::class)
}
}
class MissingConsumerException(message: String) : Throwable(message)
|
