Give me the implementation using Spring boot to connect to object grid.
Sure, here is an example implementation using Spring Boot to connect to IBM Object Grid:
- First, add the following dependencies to your Spring Boot project's pom.xml file:
<dependency>
<groupId>com.ibm.websphere.objectgrid</groupId>
<artifactId>objectgrid-client</artifactId>
<version>8.6.1.0</version>
</dependency>
<dependency>
<groupId>com.ibm.websphere.objectgrid</groupId>
<artifactId>objectgrid-common</artifactId>
<version>8.6.1.0</version>
</dependency>
- Create a configuration class to set up the ObjectGrid connection:
@Configuration
public class ObjectGridConfig {
@Value("${og.client.config.file}")
private String clientConfigFile;
@Bean
public ObjectGrid getObjectGrid() throws FileNotFoundException, ObjectGridException {
ClientClusterContext ccc = ObjectGridManagerFactory.getObjectGridManager()
.getClientClusterContext(new FileInputStream(clientConfigFile));
return ObjectGridManagerFactory.getObjectGridManager().getObjectGrid(ccc, "myGrid");
}
}
- Use the ObjectGrid in your application:
@Service
public class MyService {
private ObjectGrid objectGrid;
@Autowired
public MyService(ObjectGrid objectGrid) {
this.objectGrid = objectGrid;
}
public void addObjectToGrid(String key, Object value) {
Grid grid = objectGrid.getGrid();
GridMap<String, Object> map = grid.getMap("myMap");
map.put(key, value);
}
public Object getObjectFromGrid(String key) {
Grid grid = objectGrid.getGrid();
GridMap<String, Object> map = grid.getMap("myMap");
return map.get(key);
}
}
4. The
clientConfigFile
in the ObjectGridConfig
class is a path to a configuration file that specifies the ObjectGrid connection details for the client.Here is an example of what the contents of clientConfigFile
might look like
<?xml version="1.0" encoding="UTF-8"?> <ogclient:ogclient xmlns:ogclient="http://www.ibm.com/websphere/appserver/schemas/8.5/objectgrid/client"> <ogclient:server> <ogclient:serverdef name="myGridServer" host="localhost" port="2809" /> </ogclient:server> <ogclient:catalog> <ogclient:catalogentry name="myGrid" gridName="myGrid" /> </ogclient:catalog> </ogclient:ogclient>
5.
- Add the following dependencies to your project's pom.xml file, if they are not already included:
- <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> </dependency>
@RestController
@RequestMapping("/my-grid")
public class MyGridController {
private ObjectGrid objectGrid;
@Autowired
public MyGridController(ObjectGrid objectGrid) {
this.objectGrid = objectGrid;
}
@GetMapping("/{key}")
public ResponseEntity<Object> getObject(@PathVariable String key) {
Grid grid = objectGrid.getGrid();
GridMap<String, Object> map = grid.getMap("myMap");
Object value = map.get(key);
if (value != null) {
return ResponseEntity.ok(value);
} else {
return ResponseEntity.notFound().build();
}
}
@DeleteMapping("/{key}")
public ResponseEntity<Void> deleteObject(@PathVariable String key) {
Grid grid = objectGrid.getGrid();
GridMap<String, Object> map = grid.getMap("myMap");
Object value = map.remove(key);
if (value != null) {
return ResponseEntity.noContent().build();
} else {
return ResponseEntity.notFound().build();
}
}
}
- Run the Spring Boot application and make RESTful requests to the endpoints. For example, you can use the following
curl
commands to test the endpoints:
# Retrieve an object by key
curl -X GET http://localhost:8080/my-grid/my-key
# Delete an object by key
curl -X DELETE http://localhost:8080/my-grid/my-key
sh
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