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Server-Sent Event Application with Spring Webflux
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Lokesh Singh
Server-Sent Event Application with Spring Webflux
Commits
d0a0d44e
Commit
d0a0d44e
authored
Apr 10, 2023
by
Lokesh Singh
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sending live matches topic into kafka
parent
82500a85
Changes
7
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7 changed files
with
201 additions
and
3 deletions
+201
-3
pom.xml
pom.xml
+18
-1
readme.md
readme.md
+2
-2
AsyncHttpClientConfig.java
...a/com/lokesh/sse/configuration/AsyncHttpClientConfig.java
+88
-0
ServerSentEventConfig.java
...a/com/lokesh/sse/configuration/ServerSentEventConfig.java
+38
-0
WebClientConfiguration.java
.../com/lokesh/sse/configuration/WebClientConfiguration.java
+25
-0
LiveScoreController.java
...n/java/com/lokesh/sse/controller/LiveScoreController.java
+12
-0
LiveScoreClient.java
src/main/java/com/lokesh/sse/webclient/LiveScoreClient.java
+18
-0
No files found.
pom.xml
View file @
d0a0d44e
...
...
@@ -21,7 +21,15 @@
<groupId>
org.springframework.boot
</groupId>
<artifactId>
spring-boot-starter-webflux
</artifactId>
</dependency>
<dependency>
<groupId>
org.springframework.kafka
</groupId>
<artifactId>
spring-kafka
</artifactId>
</dependency>
<dependency>
<groupId>
io.projectreactor.kafka
</groupId>
<artifactId>
reactor-kafka
</artifactId>
<version>
1.1.2.RELEASE
</version>
</dependency>
<dependency>
<groupId>
org.projectlombok
</groupId>
<artifactId>
lombok
</artifactId>
...
...
@@ -37,6 +45,15 @@
<artifactId>
reactor-test
</artifactId>
<scope>
test
</scope>
</dependency>
<dependency>
<groupId>
com.pepegar
</groupId>
<artifactId>
hammock-asynchttpclient_2.13
</artifactId>
<version>
0.11.3
</version>
</dependency>
<dependency>
<groupId>
com.squareup.okhttp3
</groupId>
<artifactId>
okhttp
</artifactId>
</dependency>
</dependencies>
<build>
...
...
readme.md
View file @
d0a0d44e
...
...
@@ -4,8 +4,8 @@
curl --location --request POST 'http://localhost:8080/api/v1/live-scores' \
--header 'Content-Type: application/json' \
--data-raw '{
"homeTeam": "
Arsenal
",
"awayTeam": "
Tottenham
",
"homeTeam": "
Lokesh
",
"awayTeam": "
Netrapal
",
"homeScore": 1,
"awayScore": 1
}'
...
...
src/main/java/com/lokesh/sse/configuration/AsyncHttpClientConfig.java
0 → 100644
View file @
d0a0d44e
package
com
.
lokesh
.
sse
.
configuration
;
import
org.apache.kafka.clients.producer.ProducerConfig
;
import
org.apache.kafka.clients.producer.ProducerRecord
;
import
org.apache.kafka.common.serialization.StringSerializer
;
import
org.asynchttpclient.AsyncHttpClient
;
import
org.asynchttpclient.DefaultAsyncHttpClient
;
import
org.asynchttpclient.ListenableFuture
;
import
org.asynchttpclient.Response
;
import
org.springframework.beans.factory.annotation.Autowired
;
import
org.springframework.boot.autoconfigure.kafka.KafkaProperties
;
import
org.springframework.context.annotation.Bean
;
import
org.springframework.context.annotation.Configuration
;
import
reactor.core.publisher.Flux
;
import
reactor.core.publisher.Mono
;
import
reactor.kafka.sender.KafkaSender
;
import
reactor.kafka.sender.SenderOptions
;
import
reactor.kafka.sender.SenderRecord
;
import
reactor.kafka.sender.SenderResult
;
import
java.io.IOException
;
import
java.text.SimpleDateFormat
;
import
java.util.HashMap
;
import
java.util.Map
;
import
java.util.Optional
;
import
java.util.concurrent.ExecutionException
;
@Configuration
public
class
AsyncHttpClientConfig
{
private
static
final
String
TOPIC
=
"live-matches"
;
private
static
final
String
BOOTSTRAP_SERVERS
=
"localhost:9092"
;
private
static
final
String
CLIENT_ID_CONFIG
=
"news-consumer-rapidapi"
;
@Autowired
private
KafkaSender
<
String
,
String
>
kafkaSender
;
public
AsyncHttpClientConfig
(
String
bootstrapServers
){
Map
<
String
,
Object
>
props
=
new
HashMap
<>();
props
.
put
(
ProducerConfig
.
BOOTSTRAP_SERVERS_CONFIG
,
BOOTSTRAP_SERVERS
);
props
.
put
(
ProducerConfig
.
CLIENT_ID_CONFIG
,
CLIENT_ID_CONFIG
);
props
.
put
(
ProducerConfig
.
KEY_SERIALIZER_CLASS_CONFIG
,
StringSerializer
.
class
.
getName
());
props
.
put
(
ProducerConfig
.
VALUE_SERIALIZER_CLASS_CONFIG
,
StringSerializer
.
class
.
getName
());
SenderOptions
<
String
,
String
>
senderOptions
=
SenderOptions
.
create
(
props
);
kafkaSender
=
KafkaSender
.
create
(
senderOptions
);
}
public
void
close
()
{
kafkaSender
.
close
();
}
@Bean
public
void
sendNewsInKafka
()
throws
IOException
{
AsyncHttpClient
asyncHttpClient
=
new
DefaultAsyncHttpClient
();
asyncHttpClient
.
prepare
(
"GET"
,
"https://livescore6.p.rapidapi.com/matches/v2/list-live?Category=soccer&Timezone=-7"
)
.
setHeader
(
"X-RapidAPI-Key"
,
"0b715b060amsh3056d92625990d9p1fe679jsn29ba530ad93c"
)
.
setHeader
(
"X-RapidAPI-Host"
,
"livescore6.p.rapidapi.com"
)
.
execute
()
.
toCompletableFuture
()
// .thenAccept(System.out::println)
.
thenAccept
(
response
->
{
String
body
=
response
.
getResponseBody
();
System
.
out
.
println
(
body
);
ProducerRecord
<
String
,
String
>
record
=
new
ProducerRecord
<>(
TOPIC
,
null
,
body
);
SenderRecord
<
String
,
String
,
ProducerRecord
<
String
,
String
>>
senderRecord
=
SenderRecord
.
create
(
record
,
null
);
kafkaSender
.
send
(
Flux
.
just
(
senderRecord
))
.
doOnNext
(
result
->
{
if
(
result
.
exception
()
!=
null
)
{
// Handle sending failure
System
.
err
.
println
(
"Failed to send message: "
+
result
.
exception
().
getMessage
());
}
else
{
// Handle sending success
System
.
out
.
println
(
"Message sent successfully: "
+
result
.
correlationMetadata
());
}
})
.
subscribe
();
})
.
thenAccept
(
System
.
out
::
println
)
.
join
();
asyncHttpClient
.
close
();
}
public
static
void
main
(
String
[]
args
)
throws
IOException
{
AsyncHttpClientConfig
ob
=
new
AsyncHttpClientConfig
(
BOOTSTRAP_SERVERS
);
ob
.
sendNewsInKafka
();
}
}
src/main/java/com/lokesh/sse/configuration/ServerSentEventConfig.java
0 → 100644
View file @
d0a0d44e
package
com
.
lokesh
.
sse
.
configuration
;
import
org.apache.kafka.clients.consumer.ConsumerConfig
;
import
org.apache.kafka.common.serialization.StringDeserializer
;
import
org.springframework.context.annotation.Bean
;
import
org.springframework.context.annotation.Configuration
;
import
org.springframework.stereotype.Component
;
import
reactor.kafka.receiver.KafkaReceiver
;
import
reactor.kafka.receiver.ReceiverOptions
;
import
reactor.kafka.receiver.internals.ConsumerFactory
;
import
reactor.kafka.receiver.internals.DefaultKafkaReceiver
;
import
java.util.Collections
;
import
java.util.HashMap
;
import
java.util.Map
;
@Configuration
public
class
ServerSentEventConfig
{
private
static
final
String
TOPIC
=
"live-matches"
;
private
static
final
String
BOOTSTRAP_SERVERS
=
"localhost:9092"
;
private
static
final
String
CLIENT_ID_CONFIG
=
"news-consumer-rapidapi"
;
private
static
final
String
GROUP_ID_CONFIG
=
"news-rapidapi"
;
@Bean
public
KafkaReceiver
kafkaReceiver
(){
Map
<
String
,
Object
>
props
=
new
HashMap
<>();
props
.
put
(
ConsumerConfig
.
BOOTSTRAP_SERVERS_CONFIG
,
BOOTSTRAP_SERVERS
);
props
.
put
(
ConsumerConfig
.
CLIENT_ID_CONFIG
,
CLIENT_ID_CONFIG
);
props
.
put
(
ConsumerConfig
.
GROUP_ID_CONFIG
,
GROUP_ID_CONFIG
);
props
.
put
(
ConsumerConfig
.
KEY_DESERIALIZER_CLASS_CONFIG
,
StringDeserializer
.
class
.
getName
());
props
.
put
(
ConsumerConfig
.
VALUE_DESERIALIZER_CLASS_CONFIG
,
StringDeserializer
.
class
.
getName
());
props
.
put
(
ConsumerConfig
.
AUTO_OFFSET_RESET_CONFIG
,
"earliest"
);
props
.
put
(
ConsumerConfig
.
ENABLE_AUTO_COMMIT_CONFIG
,
true
);
return
new
DefaultKafkaReceiver
(
ConsumerFactory
.
INSTANCE
,
ReceiverOptions
.
create
(
props
).
subscription
(
Collections
.
singleton
(
TOPIC
)));
}
}
src/main/java/com/lokesh/sse/configuration/WebClientConfiguration.java
0 → 100644
View file @
d0a0d44e
package
com
.
lokesh
.
sse
.
configuration
;
import
org.apache.commons.logging.LogFactory
;
import
org.asynchttpclient.AsyncHttpClient
;
import
org.asynchttpclient.DefaultAsyncHttpClient
;
import
org.slf4j.Logger
;
import
org.slf4j.LoggerFactory
;
import
org.springframework.context.annotation.Bean
;
import
org.springframework.context.annotation.Configuration
;
import
org.springframework.http.HttpHeaders
;
import
org.springframework.http.MediaType
;
import
org.springframework.web.reactive.config.EnableWebFlux
;
import
org.springframework.web.reactive.config.WebFluxConfigurer
;
import
org.springframework.web.reactive.function.client.WebClient
;
import
java.io.IOException
;
@Configuration
@EnableWebFlux
public
class
WebClientConfiguration
implements
WebFluxConfigurer
{
Logger
logger
=
LoggerFactory
.
getLogger
(
WebClientConfiguration
.
class
);
}
src/main/java/com/lokesh/sse/controller/LiveScoreController.java
View file @
d0a0d44e
package
com
.
lokesh
.
sse
.
controller
;
import
com.lokesh.sse.configuration.AsyncHttpClientConfig
;
import
com.lokesh.sse.configuration.WebClientConfiguration
;
import
com.lokesh.sse.model.LiveScore
;
import
com.lokesh.sse.service.LiveScoreHandler
;
import
org.asynchttpclient.request.body.generator.FeedListener
;
import
org.slf4j.Logger
;
import
org.slf4j.LoggerFactory
;
import
org.springframework.beans.factory.annotation.Autowired
;
import
org.springframework.http.HttpStatus
;
import
org.springframework.http.MediaType
;
import
org.springframework.http.codec.ServerSentEvent
;
import
org.springframework.web.bind.annotation.*
;
import
org.springframework.web.reactive.function.client.WebClient
;
import
reactor.core.publisher.Flux
;
import
reactor.core.publisher.Mono
;
import
java.io.IOException
;
import
java.time.Duration
;
@RestController
...
...
@@ -21,6 +27,8 @@ public class LiveScoreController {
private
final
LiveScoreHandler
processor
;
private
AsyncHttpClientConfig
asyncHttpClientConfig
;
public
LiveScoreController
(
LiveScoreHandler
processor
)
{
this
.
processor
=
processor
;
}
...
...
@@ -44,4 +52,8 @@ public class LiveScoreController {
.
retry
(
Duration
.
ofMillis
(
200
))
.
build
());
}
// @GetMapping("/news")
// public Flux<ServerSentEvent<Object>> getNews() {
// return Flux.create();
// }
}
src/main/java/com/lokesh/sse/webclient/LiveScoreClient.java
0 → 100644
View file @
d0a0d44e
package
com
.
lokesh
.
sse
.
webclient
;
import
okhttp3.OkHttpClient
;
import
okhttp3.Request
;
import
okhttp3.Response
;
import
org.asynchttpclient.AsyncHttpClient
;
import
org.asynchttpclient.DefaultAsyncHttpClient
;
import
java.io.IOException
;
public
class
LiveScoreClient
{
public
static
void
main
(
String
[]
args
)
throws
IOException
{
// LiveScoreClient ob = new LiveScoreClient();
// System.out.println(ob.response);
}
}
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