-
Notifications
You must be signed in to change notification settings - Fork 215
/
StreamingConfig.java
134 lines (113 loc) · 3.77 KB
/
StreamingConfig.java
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
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
/*
* Copyright (c) 2019 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.gateway.service.util.config.streaming;
import java.time.Duration;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.ditto.internal.models.acks.config.AcknowledgementConfig;
import org.eclipse.ditto.internal.utils.config.KnownConfigValue;
import com.typesafe.config.Config;
import com.typesafe.config.ConfigFactory;
/**
* Provides configuration settings of general gateway streaming functionality.
*/
public interface StreamingConfig {
/**
* Config path relative to its parent.
*/
String CONFIG_PATH = "streaming";
/**
* Returns the session counter update interval.
*
* @return the interval.
*/
Duration getSessionCounterScrapeInterval();
/**
* Returns the config specific to Acknowledgements for gateway streaming sessions.
*
* @return the config.
*/
AcknowledgementConfig getAcknowledgementConfig();
/**
* Returns the websocket config for streaming.
*
* @return the websocket config.
*/
WebsocketConfig getWebsocketConfig();
/**
* Returns the SSE config.
*
* @return the SSE config.
* @since 1.1.0
*/
SseConfig getSseConfig();
/**
* Returns maximum number of stream elements to process in parallel.
*
* @return the parallelism.
*/
int getParallelism();
/**
* Returns how long to wait before closing an idle search stream.
*
* @return the search idle timeout.
*/
Duration getSearchIdleTimeout();
/**
* Render this object into a Config object from which a copy of this object can be constructed.
*
* @return a config representation.
*/
default Config render() {
final Map<String, Object> map = new HashMap<>();
map.put(StreamingConfigValue.SESSION_COUNTER_SCRAPE_INTERVAL.getConfigPath(),
getSessionCounterScrapeInterval().toMillis() + "ms");
map.put(StreamingConfigValue.PARALLELISM.getConfigPath(), getParallelism());
map.put(StreamingConfigValue.SEARCH_IDLE_TIMEOUT.getConfigPath(), getSearchIdleTimeout());
return ConfigFactory.parseMap(map)
.withFallback(getWebsocketConfig().render())
.atKey(CONFIG_PATH);
}
/**
* An enumeration of the known config path expressions and their associated default values for
* {@code StreamingConfig}.
*/
enum StreamingConfigValue implements KnownConfigValue {
/**
* How often to update websocket session counter by counting child actors.
*/
SESSION_COUNTER_SCRAPE_INTERVAL("session-counter-scrape-interval", Duration.ofSeconds(30L)),
/**
* Maximum number of stream elements to process in parallel.
*/
PARALLELISM("parallelism", 64),
/**
* How long to wait before closing an idle search stream.
*/
SEARCH_IDLE_TIMEOUT("search-idle-timeout", Duration.ofSeconds(45));
private final String path;
private final Object defaultValue;
StreamingConfigValue(final String thePath, final Object theDefaultValue) {
path = thePath;
defaultValue = theDefaultValue;
}
@Override
public Object getDefaultValue() {
return defaultValue;
}
@Override
public String getConfigPath() {
return path;
}
}
}