ZPageHandler (OpenTelemetry - zPages)

java.lang.Object
- io.opentelemetry.sdk.extension.zpages.ZPageHandler

```
public abstract class ZPageHandler
extends Object
```
The main interface for all zPages. All zPages should implement this interface to allow the HTTP server implementation to support these pages.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract void`	`emitHtml(Map<String,String> queryMap, OutputStream outputStream)`	Emits the generated HTML page to the `outputStream`.
`abstract String`	`getPageDescription()`	Returns the description of the zPage.
`abstract String`	`getPageName()`	Returns the name of the zPage.
`abstract String`	`getUrlPath()`	Returns the URL path that should be used to register this zPage to the HTTP server.
`boolean`	`processRequest(String requestMethod, Map<String,String> queryMap, OutputStream outputStream)`	Process requests that require changes (POST/PUT/DELETE).

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getUrlPath
```
public abstract String getUrlPath()
```
    Returns the URL path that should be used to register this zPage to the HTTP server.
    
    Returns:
    
    the URL path that should be used to register this zPage to the HTTP server.
  - getPageName
```
public abstract String getPageName()
```
    Returns the name of the zPage.
    
    Returns:
    
    the name of the zPage.
  - getPageDescription
```
public abstract String getPageDescription()
```
    Returns the description of the zPage.
    
    Returns:
    
    the description of the zPage.
  - processRequest
```
public boolean processRequest(String requestMethod,
                              Map<String,String> queryMap,
                              OutputStream outputStream)
```
    Process requests that require changes (POST/PUT/DELETE).
    
    Parameters:
    
    requestMethod - the request method HttpHandler received.
    
    queryMap - the map of the URL query parameters.
    
    Returns:
    
    true if theres an error while processing the request.
  - emitHtml
```
public abstract void emitHtml(Map<String,String> queryMap,
                              OutputStream outputStream)
```
    Emits the generated HTML page to the outputStream.
    
    Parameters:
    
    queryMap - the map of the URL query parameters.
    
    outputStream - the output for the generated HTML page.