com.vaadin.flow.server

Class PropertyDeploymentConfiguration

java.lang.Object

com.vaadin.flow.server.AbstractDeploymentConfiguration

com.vaadin.flow.server.PropertyDeploymentConfiguration

All Implemented Interfaces:

DeploymentConfiguration, Serializable

Direct Known Subclasses:

DefaultDeploymentConfiguration

public class PropertyDeploymentConfiguration
extends AbstractDeploymentConfiguration

The property handling implementation of DeploymentConfiguration based on a base class for resolving system properties and a set of init parameters.

Since:

1.2

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PropertyDeploymentConfiguration(Class<?> systemPropertyBaseClass, Properties initParameters) Create a new property deployment configuration instance.

Method Summary

Modifier and Type	Method and Description
<T> T	getApplicationOrSystemProperty(String propertyName, T defaultValue, Function<String,T> converter) Gets a configured property.
String	getApplicationProperty(String parameterName) Gets an application property value.
int	getHeartbeatInterval() Returns the number of seconds between heartbeat requests of a UI, or a non-positive number if heartbeat is disabled.
Properties	getInitParameters() Gets the properties configured for the deployment, e.g.
int	getMaxMessageSuspendTimeout() In certain cases, such as when combining XmlHttpRequests and push over low bandwidth connections, messages may be received out of order by the client.
PushMode	getPushMode() Returns the mode of bidirectional ("push") client-server communication that should be used.
String	getPushURL() Returns the URL that bidirectional ("push") client-server communication should use.
protected String	getSystemProperty(String parameterName) Gets an system property value.
int	getWebComponentDisconnect() Returns the number of seconds that a WebComponent will wait for a reconnect before removing the server-side component from memory.
boolean	isCloseIdleSessions() Returns whether a Vaadin session should be closed when all its open UIs have been idle for longer than its configured maximum inactivity time.
boolean	isProductionMode() Returns whether Vaadin is in production mode.
boolean	isRequestTiming() Returns whether the server provides timing info to the client.
boolean	isSendUrlsAsParameters() Returns whether the sending of URL's as GET and POST parameters in requests with content-type application/x-www-form-urlencoded is enabled or not.
boolean	isSyncIdCheckEnabled() Returns whether sync id checking is enabled.
boolean	isXsrfProtectionEnabled() Returns whether cross-site request forgery protection is enabled.

Methods inherited from class com.vaadin.flow.server.AbstractDeploymentConfiguration

getClassLoaderName, getUIClassName

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.vaadin.flow.function.DeploymentConfiguration

disableAutomaticServletRegistration, enableDevServer, getBooleanProperty, getCompiledWebComponentsPath, getExternalStatsUrl, getPolyfills, getStringProperty, isBrotli, isEagerServerLoad, isPnpmEnabled, isStatsExternal, reuseDevServer, useV14Bootstrap

Constructor Detail

PropertyDeploymentConfiguration

public PropertyDeploymentConfiguration(Class<?> systemPropertyBaseClass,
                                       Properties initParameters)

Create a new property deployment configuration instance.

Parameters:

systemPropertyBaseClass - the class that should be used as a basis when reading system properties

initParameters - the init parameters that should make up the foundation for this configuration

Method Detail

getApplicationOrSystemProperty

public <T> T getApplicationOrSystemProperty(String propertyName,
                                            T defaultValue,
                                            Function<String,T> converter)

Description copied from interface: DeploymentConfiguration

Gets a configured property. The properties are typically read from e.g. web.xml or from system properties of the JVM.

Type Parameters:

T - type of a property

Parameters:

propertyName - The simple of the property, in some contexts, lookup might be performed using variations of the provided name.

defaultValue - the default value that should be used if no value has been defined

converter - the way string should be converted into the required property

Returns:

the property value, or the passed default value if no property value is found

getSystemProperty

protected String getSystemProperty(String parameterName)

Gets an system property value.

Parameters:

parameterName - the Name or the parameter.

Returns:

String value or null if not found

getApplicationProperty

public String getApplicationProperty(String parameterName)

Gets an application property value.

Parameters:

parameterName - the Name or the parameter.

Returns:

String value or null if not found

isProductionMode

public boolean isProductionMode()

Description copied from interface: DeploymentConfiguration

Returns whether Vaadin is in production mode.

Returns:

true if in production mode, false otherwise.

isRequestTiming

public boolean isRequestTiming()

Description copied from interface: DeploymentConfiguration

Returns whether the server provides timing info to the client.

Returns:

true if timing info is provided, false otherwise.

isXsrfProtectionEnabled

public boolean isXsrfProtectionEnabled()

Description copied from interface: DeploymentConfiguration

Returns whether cross-site request forgery protection is enabled.

Returns:

true if XSRF protection is enabled, false otherwise.

isSyncIdCheckEnabled

public boolean isSyncIdCheckEnabled()

Description copied from interface: DeploymentConfiguration

Returns whether sync id checking is enabled. The sync id is used to gracefully handle situations when the client sends a message to a connector that has recently been removed on the server.

Returns:

true if sync id checking is enabled; false otherwise

getHeartbeatInterval

public int getHeartbeatInterval()

Description copied from interface: DeploymentConfiguration

Returns the number of seconds between heartbeat requests of a UI, or a non-positive number if heartbeat is disabled.

Returns:

The time between heartbeats.

getMaxMessageSuspendTimeout

public int getMaxMessageSuspendTimeout()

Description copied from interface: DeploymentConfiguration

In certain cases, such as when combining XmlHttpRequests and push over low bandwidth connections, messages may be received out of order by the client. This property specifies the maximum time (in milliseconds) that the client will then wait for the predecessors of a received out-order message, before considering them missing and requesting a full resynchronization of the application state from the server.

Returns:

The maximum message suspension timeout

getWebComponentDisconnect

public int getWebComponentDisconnect()

Description copied from interface: DeploymentConfiguration

Returns the number of seconds that a WebComponent will wait for a reconnect before removing the server-side component from memory.

Returns:

time to wait after a disconnect has happened

isSendUrlsAsParameters

public boolean isSendUrlsAsParameters()

Description copied from interface: DeploymentConfiguration

Returns whether the sending of URL's as GET and POST parameters in requests with content-type application/x-www-form-urlencoded is enabled or not.

Returns:

false if set to false or true otherwise

isCloseIdleSessions

public boolean isCloseIdleSessions()

Description copied from interface: DeploymentConfiguration

Returns whether a Vaadin session should be closed when all its open UIs have been idle for longer than its configured maximum inactivity time.

A UI is idle if it is open on the client side but has no activity other than heartbeat requests. If isCloseIdleSessions() == false, heartbeat requests cause the session to stay open for as long as there are open UIs on the client side. If it is true, the session is eventually closed if the open UIs do not have any user interaction.

Returns:

True if UIs and Vaadin sessions receiving only heartbeat requests are eventually closed; false if heartbeat requests extend UI and session lifetime indefinitely.

See Also:

WrappedSession.getMaxInactiveInterval()

getPushMode

public PushMode getPushMode()

Description copied from interface: DeploymentConfiguration

Returns the mode of bidirectional ("push") client-server communication that should be used.

Returns:

The push mode in use.

getPushURL

public String getPushURL()

Description copied from interface: DeploymentConfiguration

Returns the URL that bidirectional ("push") client-server communication should use.

Returns:

The push URL to use

getInitParameters

public Properties getInitParameters()

Description copied from interface: DeploymentConfiguration

Gets the properties configured for the deployment, e.g. as init parameters to the servlet.

Returns:

properties for the application.