DeploymentConfiguration (Flow Server 4.0.5 API)

All Superinterfaces:

Serializable

All Known Implementing Classes:

AbstractDeploymentConfiguration, DefaultDeploymentConfiguration, PropertyDeploymentConfiguration
```
public interface DeploymentConfiguration
extends Serializable
```
A collection of properties configured at deploy time as well as a way of accessing third party properties not explicitly supported by this class.

Since:

1.0

Author:

Vaadin Ltd

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`default boolean`	`disableAutomaticServletRegistration()` Determines if Flow should automatically register servlets.
`default boolean`	`enableDevServer()` Get if the dev server should be enabled.
`<T> T`	`getApplicationOrSystemProperty(String propertyName, T defaultValue, Function<String,T> converter)` Gets a configured property.
`default boolean`	`getBooleanProperty(String propertyName, boolean defaultValue)` A shorthand of `getApplicationOrSystemProperty(String, Object, Function)` for `String` type.
`String`	`getClassLoaderName()` Gets class loader configuration option value.
`default String`	`getCompiledWebComponentsPath()`
`default String`	`getExternalStatsUrl()` Get the url from where stats.json should be retrieved from.
`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.
`default List<String>`	`getPolyfills()` Returns an array with polyfills to be loaded when the app is loaded.
`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.
`default String`	`getStringProperty(String propertyName, String defaultValue)` A shorthand of `getApplicationOrSystemProperty(String, Object, Function)` for `String` type.
`String`	`getUIClassName()` Gets UI class configuration option value.
`int`	`getWebComponentDisconnect()` Returns the number of seconds that a WebComponent will wait for a reconnect before removing the server-side component from memory.
`default boolean`	`isBrotli()` Checks whether precompressed Brotli files should be used if available.
`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`	`isDevModeLiveReloadEnabled()` Checks if dev mode live reload is enabled or not.
`default boolean`	`isEagerServerLoad()` Get if the bootstrap page should include the initial UIDL fragment.
`default boolean`	`isPnpmEnabled()` Returns whether pnpm is enabled or not.
`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.
`default boolean`	`isStatsExternal()` Get if the stats.json file should be retrieved from an external service or through the classpath.
`boolean`	`isSyncIdCheckEnabled()` Returns whether sync id checking is enabled.
`boolean`	`isXsrfProtectionEnabled()` Returns whether cross-site request forgery protection is enabled.
`default boolean`	`reuseDevServer()` Get if the dev server should be reused on each reload.
`default boolean`	`useV14Bootstrap()` Returns whether Vaadin is running in useDeprecatedV14Bootstrapping.

- Method Detail
  - isProductionMode
```
boolean isProductionMode()
```
    Returns whether Vaadin is in production mode.
    
    Returns:
    
    true if in production mode, false otherwise.
  - useV14Bootstrap
```
default boolean useV14Bootstrap()
```
    Returns whether Vaadin is running in useDeprecatedV14Bootstrapping.
    
    Returns:
    
    true if in useDeprecatedV14Bootstrapping, false otherwise.
  - isRequestTiming
```
boolean isRequestTiming()
```
    Returns whether the server provides timing info to the client.
    
    Returns:
    
    true if timing info is provided, false otherwise.
  - isXsrfProtectionEnabled
```
boolean isXsrfProtectionEnabled()
```
    Returns whether cross-site request forgery protection is enabled.
    
    Returns:
    
    true if XSRF protection is enabled, false otherwise.
  - isSyncIdCheckEnabled
```
boolean isSyncIdCheckEnabled()
```
    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
```
int getHeartbeatInterval()
```
    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
```
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. 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
```
int getWebComponentDisconnect()
```
    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
```
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.
    
    Returns:
    
    false if set to false or true otherwise
  - isCloseIdleSessions
```
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.
    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
```
PushMode getPushMode()
```
    Returns the mode of bidirectional ("push") client-server communication that should be used.
    
    Returns:
    
    The push mode in use.
  - getPushURL
```
String getPushURL()
```
    Returns the URL that bidirectional ("push") client-server communication should use.
    
    Returns:
    
    The push URL to use
  - getInitParameters
```
Properties getInitParameters()
```
    Gets the properties configured for the deployment, e.g. as init parameters to the servlet.
    
    Returns:
    
    properties for the application.
  - getApplicationOrSystemProperty
```
<T> T getApplicationOrSystemProperty(String propertyName,
                                     T defaultValue,
                                     Function<String,T> converter)
```
    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
  - getStringProperty
```
default String getStringProperty(String propertyName,
                                 String defaultValue)
```
    A shorthand of getApplicationOrSystemProperty(String, Object, Function) for String type.
    
    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
    
    Returns:
    
    the property value, or the passed default value if no property value is found
  - getBooleanProperty
```
default boolean getBooleanProperty(String propertyName,
                                   boolean defaultValue)
                            throws IllegalArgumentException
```
    A shorthand of getApplicationOrSystemProperty(String, Object, Function) for String type. Considers "" to be equal true in order to treat params like -Dtest.param as enabled (test.param == true). Additionally validates the property value, requiring non-empty strings to be equal to boolean string representation. An exception thrown if it's not true.
    
    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
    
    Returns:
    
    the property value, or the passed default value if no property value is found
    
    Throws:
    
    IllegalArgumentException - if property value string is not a boolean value
  - getUIClassName
```
String getUIClassName()
```
    Gets UI class configuration option value.
    
    Returns:
    
    UI class name
  - getClassLoaderName
```
String getClassLoaderName()
```
    Gets class loader configuration option value.
    
    Returns:
    
    the configured class loader name
  - disableAutomaticServletRegistration
```
default boolean disableAutomaticServletRegistration()
```
    Determines if Flow should automatically register servlets. For more information on the servlets registered, refer to ServletDeployer javadoc. User can explicitly disable automatic servlet registration by setting the InitParameters.DISABLE_AUTOMATIC_SERVLET_REGISTRATION property to true.
    
    Returns:
    
    true if Flow should not automatically register servlets
    
    See Also:
    
    ServletDeployer
  - isBrotli
```
default boolean isBrotli()
```
    Checks whether precompressed Brotli files should be used if available.
    
    Returns:
    
    true to serve precompressed Brotli files, false to not serve Brotli files.
  - getCompiledWebComponentsPath
```
default String getCompiledWebComponentsPath()
```
  - getPolyfills
```
default List<String> getPolyfills()
```
    Returns an array with polyfills to be loaded when the app is loaded. The default value is empty, but it can be changed by setting the InitParameters.SERVLET_PARAMETER_POLYFILLS as a comma separated list of JS files to load.
    
    Returns:
    
    polyfills to load
  - enableDevServer
```
default boolean enableDevServer()
```
    Get if the dev server should be enabled. True by default
    
    Returns:
    
    true if dev server should be used
  - reuseDevServer
```
default boolean reuseDevServer()
```
    Get if the dev server should be reused on each reload. True by default, set it to false in tests so as dev server is not kept as a daemon after the test.
    
    Returns:
    
    true if dev server should be reused
  - isStatsExternal
```
default boolean isStatsExternal()
```
    Get if the stats.json file should be retrieved from an external service or through the classpath.
    
    Returns:
    
    true if stats.json is served from an external location
  - getExternalStatsUrl
```
default String getExternalStatsUrl()
```
    Get the url from where stats.json should be retrieved from. If not given this will default to '/vaadin-static/VAADIN/config/stats.json'
    
    Returns:
    
    external stats.json location
  - isEagerServerLoad
```
default boolean isEagerServerLoad()
```
    Get if the bootstrap page should include the initial UIDL fragment. This only makes sense for the client-side bootstrapping.
    By default it is false.
    Enabling this flag, it will make the initial application load a couple of seconds faster in very slow networks because of the extra round-trip to request the UIDL after the index.html is loaded.
    Otherwise, keeping the flag as false is beneficial, specially in application that mix client and server side views, since the `index.html` can be cached and served by service workers in PWAs, as well as in the server side session and UI initialization is deferred until a server view is actually requested by the user, saving some server resources.
    
    Returns:
    
    true if initial UIDL should be included in page
  - isDevModeLiveReloadEnabled
```
boolean isDevModeLiveReloadEnabled()
```
    Checks if dev mode live reload is enabled or not.
    
    Returns:
    
    true if dev mode live reload is enabled, false otherwise
  - isPnpmEnabled
```
default boolean isPnpmEnabled()
```
    Returns whether pnpm is enabled or not.
    
    Returns:
    
    true if enabled, false if not
    
    Since:
    
    2.2

Interface DeploymentConfiguration

Method Summary

Method Detail

isProductionMode

useV14Bootstrap

isRequestTiming

isXsrfProtectionEnabled

isSyncIdCheckEnabled

getHeartbeatInterval

getMaxMessageSuspendTimeout

getWebComponentDisconnect

isSendUrlsAsParameters

isCloseIdleSessions

getPushMode

getPushURL

getInitParameters

getApplicationOrSystemProperty

getStringProperty

getBooleanProperty

getUIClassName

getClassLoaderName

disableAutomaticServletRegistration

isBrotli

getCompiledWebComponentsPath

getPolyfills

enableDevServer

reuseDevServer

isStatsExternal

getExternalStatsUrl

isEagerServerLoad

isDevModeLiveReloadEnabled

isPnpmEnabled