除了内置端点之外,管理依赖项还提供对创建自定义端点的支持。这些可以像内置端点一样启用和配置,并可用于检索和返回任何指标或其他应用程序数据。
端点注解
可以通过使用端点注释对类进行注释并为其提供(至少)端点 ID 来创建端点。
FooEndpoint.java
@Endpoint("foo")
class FooEndpoint {
...
}
如果向注解提供了单个字符串参数,则将其用作端点 ID。
可以为注释提供额外的(命名的)参数。 @Endpoint 的其他可能参数如下表所述:
表 1. 端点参数
参数 |
描述 |
端点示例 |
String id
|
端点 ID(或名称)
|
@Endpoint(id = "foo")
|
String prefix
|
用于配置端点的前缀
|
@Endpoint(prefix = "foo")
|
boolean defaultEnabled
|
设置在未设置配置时是否启用端点
|
@Endpoint(defaultEnabled = false)
|
boolean defaultSensitive
|
如果未设置配置,则设置端点是否敏感
|
@Endpoint(defaultSensitive = false)
|
自定义端点示例
以下示例端点类创建一个可在 /date 访问的端点:
CurrentDateEndpoint
Java |
Groovy |
Kotlin |
import io.micronaut.management.endpoint.annotation.Endpoint;
@Endpoint(id = "date",
prefix = "custom",
defaultEnabled = true,
defaultSensitive = false)
public class CurrentDateEndpoint {
//.. endpoint methods
}
|
import io.micronaut.management.endpoint.annotation.Endpoint
@Endpoint(id = "date",
prefix = "custom",
defaultEnabled = true,
defaultSensitive = false)
class CurrentDateEndpoint {
//.. endpoint methods
}
|
import io.micronaut.management.endpoint.annotation.Endpoint
@Endpoint(id = "date", prefix = "custom", defaultEnabled = true, defaultSensitive = false)
class CurrentDateEndpoint {
//.. endpoint methods
}
|
端点方法
端点响应 GET(“读取”)、POST(“写入”)和 DELETE(“删除”)请求。要从端点返回响应,请使用以下注释之一对其公共方法进行注释:
读取方法
使用 Read 注释注释方法会导致它响应 GET 请求。
CurrentDateEndpoint
Java |
Groovy |
Kotlin |
import io.micronaut.management.endpoint.annotation.Endpoint;
import io.micronaut.management.endpoint.annotation.Read;
@Endpoint(id = "date",
prefix = "custom",
defaultEnabled = true,
defaultSensitive = false)
public class CurrentDateEndpoint {
private Date currentDate;
@Read
public Date currentDate() {
return currentDate;
}
}
|
import io.micronaut.management.endpoint.annotation.Endpoint
import io.micronaut.management.endpoint.annotation.Read
@Endpoint(id = "date",
prefix = "custom",
defaultEnabled = true,
defaultSensitive = false)
class CurrentDateEndpoint {
private Date currentDate
@Read
Date currentDate() {
currentDate
}
}
|
import io.micronaut.management.endpoint.annotation.Endpoint
import io.micronaut.management.endpoint.annotation.Read
@Endpoint(id = "date", prefix = "custom", defaultEnabled = true, defaultSensitive = false)
class CurrentDateEndpoint {
private var currentDate: Date? = null
@Read
fun currentDate(): Date? {
return currentDate
}
}
|
上述方法响应以下请求:
$ curl -X GET localhost:55838/date
1526085903689
Read 注释接受一个可选的 produces 参数,它设置从方法返回的媒体类型(默认为 application/json):
CurrentDateEndpoint
Java |
Groovy |
Kotlin |
import io.micronaut.management.endpoint.annotation.Endpoint;
import io.micronaut.management.endpoint.annotation.Read;
import io.micronaut.http.MediaType;
import io.micronaut.management.endpoint.annotation.Selector;
@Endpoint(id = "date",
prefix = "custom",
defaultEnabled = true,
defaultSensitive = false)
public class CurrentDateEndpoint {
private Date currentDate;
@Read(produces = MediaType.TEXT_PLAIN) //(1)
public String currentDatePrefix(@Selector String prefix) {
return prefix + ": " + currentDate;
}
}
|
import io.micronaut.management.endpoint.annotation.Endpoint
import io.micronaut.management.endpoint.annotation.Read
import io.micronaut.http.MediaType
import io.micronaut.management.endpoint.annotation.Selector
@Endpoint(id = "date",
prefix = "custom",
defaultEnabled = true,
defaultSensitive = false)
class CurrentDateEndpoint {
private Date currentDate
@Read(produces = MediaType.TEXT_PLAIN) //(1)
String currentDatePrefix(@Selector String prefix) {
"$prefix: $currentDate"
}
}
|
import io.micronaut.management.endpoint.annotation.Endpoint
import io.micronaut.management.endpoint.annotation.Read
import io.micronaut.http.MediaType
import io.micronaut.management.endpoint.annotation.Selector
@Endpoint(id = "date", prefix = "custom", defaultEnabled = true, defaultSensitive = false)
class CurrentDateEndpoint {
private var currentDate: Date? = null
@Read(produces = [MediaType.TEXT_PLAIN]) //(1)
fun currentDatePrefix(@Selector prefix: String): String {
return "$prefix: $currentDate"
}
}
|
支持的媒体类型由 MediaType 表示
上述方法响应以下请求:
$ curl -X GET localhost:8080/date/the_date_is
the_date_is: Fri May 11 19:24:21 CDT
写方法
使用 Write 注释对方法进行注释会导致它响应 POST 请求。
CurrentDateEndpoint
Java |
Groovy |
Kotlin |
import io.micronaut.management.endpoint.annotation.Endpoint;
import io.micronaut.management.endpoint.annotation.Write;
import io.micronaut.http.MediaType;
import io.micronaut.management.endpoint.annotation.Selector;
@Endpoint(id = "date",
prefix = "custom",
defaultEnabled = true,
defaultSensitive = false)
public class CurrentDateEndpoint {
private Date currentDate;
@Write
public String reset() {
currentDate = new Date();
return "Current date reset";
}
}
|
import io.micronaut.management.endpoint.annotation.Endpoint
import io.micronaut.management.endpoint.annotation.Write
import io.micronaut.http.MediaType
import io.micronaut.management.endpoint.annotation.Selector
@Endpoint(id = "date",
prefix = "custom",
defaultEnabled = true,
defaultSensitive = false)
class CurrentDateEndpoint {
private Date currentDate
@Write
String reset() {
currentDate = new Date()
return "Current date reset"
}
}
|
import io.micronaut.management.endpoint.annotation.Endpoint
import io.micronaut.management.endpoint.annotation.Write
import io.micronaut.http.MediaType
import io.micronaut.management.endpoint.annotation.Selector
@Endpoint(id = "date", prefix = "custom", defaultEnabled = true, defaultSensitive = false)
class CurrentDateEndpoint {
private var currentDate: Date? = null
@Write
fun reset(): String {
currentDate = Date()
return "Current date reset"
}
}
|
上述方法响应以下请求:
$ curl -X POST http://localhost:39357/date
Current date reset
Write 注释接受一个可选的 consumes 参数,它设置该方法接受的媒体类型(默认为 application/json):
MessageEndpoint
Java |
Groovy |
Kotlin |
import io.micronaut.context.annotation.Requires;
import io.micronaut.management.endpoint.annotation.Endpoint;
import io.micronaut.management.endpoint.annotation.Write;
import io.micronaut.http.MediaType;
@Endpoint(id = "message", defaultSensitive = false)
public class MessageEndpoint {
String message;
@Write(consumes = MediaType.APPLICATION_FORM_URLENCODED, produces = MediaType.TEXT_PLAIN)
public String updateMessage(String newMessage) {
this.message = newMessage;
return "Message updated";
}
}
|
import io.micronaut.management.endpoint.annotation.Endpoint
import io.micronaut.management.endpoint.annotation.Write
import io.micronaut.http.MediaType
@Endpoint(id = "message", defaultSensitive = false)
class MessageEndpoint {
String message
@Write(consumes = MediaType.APPLICATION_FORM_URLENCODED, produces = MediaType.TEXT_PLAIN)
String updateMessage(String newMessage) { //(1)
message = newMessage
return "Message updated"
}
}
|
import io.micronaut.context.annotation.Requires
import io.micronaut.management.endpoint.annotation.Endpoint
import io.micronaut.management.endpoint.annotation.Write
import io.micronaut.http.MediaType
@Endpoint(id = "message", defaultSensitive = false)
class MessageEndpoint {
internal var message: String? = null
@Write(consumes = [MediaType.APPLICATION_FORM_URLENCODED], produces = [MediaType.TEXT_PLAIN])
fun updateMessage(newMessage: String): String { //(1)
this.message = newMessage
return "Message updated"
}
}
|
上述方法响应以下请求:
$ curl -X POST http://localhost:65013/message -H 'Content-Type: application/x-www-form-urlencoded' -d newMessage=A new message'
Message updated
删除方法
使用 Delete 注释对方法进行注释会导致它响应 DELETE 请求。
MessageEndpoint
Java |
Groovy |
Kotlin |
import io.micronaut.context.annotation.Requires;
import io.micronaut.management.endpoint.annotation.Endpoint;
import io.micronaut.management.endpoint.annotation.Delete;
@Endpoint(id = "message", defaultSensitive = false)
public class MessageEndpoint {
String message;
@Delete
public String deleteMessage() {
this.message = null;
return "Message deleted";
}
}
|
import io.micronaut.management.endpoint.annotation.Endpoint
import io.micronaut.management.endpoint.annotation.Delete
@Endpoint(id = "message", defaultSensitive = false)
class MessageEndpoint {
String message
@Delete
String deleteMessage() {
message = null
return "Message deleted"
}
}
|
import io.micronaut.context.annotation.Requires
import io.micronaut.management.endpoint.annotation.Endpoint
import io.micronaut.management.endpoint.annotation.Delete
@Endpoint(id = "message", defaultSensitive = false)
class MessageEndpoint {
internal var message: String? = null
@Delete
fun deleteMessage(): String {
this.message = null
return "Message deleted"
}
}
|
上述方法响应以下请求:
$ curl -X DELETE http://localhost:65013/message
Message deleted
端点敏感度
可以通过端点注释和配置来控制整个端点的端点敏感性。但是,各个方法可以独立于端点作为一个整体进行配置。 @Sensitive 注释可以应用于方法以控制它们的敏感性。
AlertsEndpoint
Java |
Groovy |
Kotlin |
import io.micronaut.http.MediaType;
import io.micronaut.management.endpoint.annotation.Delete;
import io.micronaut.management.endpoint.annotation.Endpoint;
import io.micronaut.management.endpoint.annotation.Read;
import io.micronaut.management.endpoint.annotation.Sensitive;
import io.micronaut.management.endpoint.annotation.Write;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
@Endpoint(id = "alerts", defaultSensitive = false) // (1)
public class AlertsEndpoint {
private final List<String> alerts = new CopyOnWriteArrayList<>();
@Read
List<String> getAlerts() {
return alerts;
}
@Delete
@Sensitive(true) // (2)
void clearAlerts() {
alerts.clear();
}
@Write(consumes = MediaType.TEXT_PLAIN)
@Sensitive(property = "add.sensitive", defaultValue = true) // (3)
void addAlert(String alert) {
alerts.add(alert);
}
}
|
import io.micronaut.http.MediaType
import io.micronaut.management.endpoint.annotation.Delete
import io.micronaut.management.endpoint.annotation.Endpoint
import io.micronaut.management.endpoint.annotation.Read
import io.micronaut.management.endpoint.annotation.Sensitive
import io.micronaut.management.endpoint.annotation.Write
import java.util.concurrent.CopyOnWriteArrayList
@Endpoint(id = "alerts", defaultSensitive = false) // (1)
class AlertsEndpoint {
private final List<String> alerts = new CopyOnWriteArrayList<>();
@Read
List<String> getAlerts() {
alerts
}
@Delete
@Sensitive(true) // (2)
void clearAlerts() {
alerts.clear()
}
@Write(consumes = MediaType.TEXT_PLAIN)
@Sensitive(property = "add.sensitive", defaultValue = true) // (3)
void addAlert(String alert) {
alerts << alert
}
}
|
import io.micronaut.http.MediaType
import io.micronaut.management.endpoint.annotation.Delete
import io.micronaut.management.endpoint.annotation.Endpoint
import io.micronaut.management.endpoint.annotation.Read
import io.micronaut.management.endpoint.annotation.Sensitive
import io.micronaut.management.endpoint.annotation.Write
import java.util.concurrent.CopyOnWriteArrayList
@Endpoint(id = "alerts", defaultSensitive = false) // (1)
class AlertsEndpoint {
private val alerts: MutableList<String> = CopyOnWriteArrayList()
@Read
fun getAlerts(): List<String> {
return alerts
}
@Delete
@Sensitive(true) // (2)
fun clearAlerts() {
alerts.clear()
}
@Write(consumes = [MediaType.TEXT_PLAIN])
@Sensitive(property = "add.sensitive", defaultValue = true) // (3)
fun addAlert(alert: String) {
alerts.add(alert)
}
}
|
端点默认不敏感,使用端点的默认前缀。
无论任何其他因素如何,此方法始终是敏感的
属性值附加到前缀和 id 以查找配置值
如果设置了配置键 endpoints.alerts.add.sensitive,则该值决定了 addAlert 方法的敏感度。
端点是第一个标记,因为它是端点注释中前缀的默认值,并且未在此示例中明确设置。
alerts 是下一个标记,因为那是端点 ID
add.sensitive 是下一个标记,因为它是为 @Sensitive 注释的属性成员设置的值。
如果未设置配置键,则使用 defaultValue(默认为 true)。
端点配置
具有 endpoints 前缀的端点可以通过其默认端点 ID 进行配置。如果存在 ID 为 foo 的端点,则可以通过 endpoints.foo 对其进行配置。此外,可以通过 all 前缀提供默认值。
例如,考虑以下端点。
FooEndpoint.java
@Endpoint("foo")
class FooEndpoint {
...
}
默认情况下,端点已启用。要禁用它,请将 endpoints.foo.enabled 设置为 false。如果未设置 endpoints.foo.enabled 且 endpoints.all.enabled 为 false,则端点将被禁用。
端点的配置值覆盖所有端点的配置值。如果 endpoints.foo.enabled 为 true 而 endpoints.all.enabled 为 false,端点将被启用。
对于所有端点,可以设置以下配置值。
Properties |
Yaml |
Toml |
Groovy |
Hocon |
JSON |
endpoints.<any endpoint id>.enabled=Boolean
endpoints.<any endpoint id>.sensitive=Boolean
|
endpoints:
<any endpoint id>:
enabled: Boolean
sensitive: Boolean
|
[endpoints]
sensitive="Boolean"
|
endpoints {
<any endpoint id> {
enabled = "Boolean"
sensitive = "Boolean"
}
}
|
{
endpoints {
<any endpoint id> {
enabled = "Boolean"
sensitive = "Boolean"
}
}
}
|
{
"endpoints": {
"<any endpoint id>": {
"enabled": "Boolean",
"sensitive": "Boolean"
}
}
}
|
默认情况下,所有端点的基本路径都是 /。如果您希望端点在不同的基本路径下可用,请配置 endpoints.all.path。例如,如果该值设置为 /endpoints/,则可以在 /endpoints/foo 相对于上下文路径访问 foo 端点。请注意,除非设置了 micronaut.server.context-path,否则 endpoints.all.path 需要前导和尾随 /,在这种情况下,前导 / 不是必需的。
更多建议: