ServerConfigurationService (Sakai Component Manager 10.2 API)

```
public interface ServerConfigurationService
```
ServerConfigurationService provides information about how the server is configured.

Nested Class Summary

Nested Classes
Modifier and Type	Interface and Description
`static interface`	`ServerConfigurationService.ConfigData` Defines the config data holding class
`static interface`	`ServerConfigurationService.ConfigHistory` Defines the config item history class
`static interface`	`ServerConfigurationService.ConfigItem` Defines the config item holding class
`static interface`	`ServerConfigurationService.ConfigurationListener` Allows a service to be notified when configuration settings are changed, It is up to the implementor to ignore the changes they do not care about.
`static interface`	`ServerConfigurationService.ConfigurationProvider` Allows registration of configuration settings (config items) from outside the Server Configuration Service and the standard set of properties files which will be loaded early on the configuration cycle NOTE: the implemented ConfigurationProvider MUST be a Spring singleton and it MUST be registered in the main Sakai application context from a component (from a webapp will not work), it also must be set explicitly to not lazy initialize (lazy-init="false"), it is always possible to update the configuration later using `#registerConfigItems(ConfigData)` so this is mainly for loading configurations very early in the system startup

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`CURRENT_PORTAL_PATH` Key in the ThreadLocalManager for the path based on the current request.
`static String`	`CURRENT_SERVER_URL` Key in the ThreadLocalManager for the serverUrl based on the current request.
`static String`	`SERVICE_NAME` This string can be used to find the service in the service manager.
`static String`	`TYPE_ARRAY`
`static String`	`TYPE_BOOLEAN`
`static String`	`TYPE_INT`
`static String`	`TYPE_STRING`
`static String[]`	`TYPES`
`static String`	`UNKNOWN`

Method Summary

Methods
Modifier and Type	Method and Description
`String`	`getAccessPath()` Access the path to the access service on the server relative to the base URL for the server.
`String`	`getAccessUrl()` Access the URL to the access service on the server - append any additional path to the end.
`boolean`	`getBoolean(String name, boolean dflt)` Access some named configuration value as a boolean.
`List<String>`	`getCategoryGroups(String category)` KNL-989 Access the list of groups by category (site type)
`<T> T`	`getConfig(String name, T defaultValue)` Retrieves config values from the configuration service
`ServerConfigurationService.ConfigData`	`getConfigData()` Returns data about all the configuration values which are known to the system at the time and some stats which are useful
`ServerConfigurationService.ConfigItem`	`getConfigItem(String name)` Retrieve the internally stored the config item, this is not really for general use, if you want the value of a configuration variable then you should use `getConfig(String, Object)`
`List<String>`	`getDefaultTools(String category)` Access the list of tool ids that are selected by default for this category.
`String`	`getGatewaySiteId()` Access the site id for the gateway (public) site.
`String`	`getHelpUrl(String helpContext)` Access the URL to the help service on the server - append in the path the tool well known id for context sensitive help.
`int`	`getInt(String name, int dflt)` Access some named configuration value as an int.
`Locale`	`getLocaleFromString(String localeString)` Parse a string into a Locale
`String`	`getLoggedOutUrl()` Access the URL to use as a redirect when the user has logged out.
`String`	`getPortalUrl()` Access the URL to the portal service on the server - append any additional path to the end.
`String`	`getRawProperty(String name)` Access the undereferenced value of the given property.
`String`	`getSakaiHomePath()` Access the file path to the "sakai home" on the app server.
`Locale[]`	`getSakaiLocales()` Get the list of allowed locales as controlled by config params for "locales" and "locales.more" Defaults when nothing is specified in the config files come from `SakaiLocales.SAKAI_LOCALES_DEFAULT`
`String`	`getServerId()` Access the unique (to the cluster) id of the server.
`String`	`getServerIdInstance()` Access the combined server / instance id.
`String`	`getServerInstance()` Access the unique (to the cluster) instance id of the server.
`String`	`getServerName()` Access the server DNS name.
`String`	`getServerUrl()` Access the URL to the root of the server - append any additional path to the end.
`String`	`getString(String name)` Access some named configuration value as a string. 1) IF "name=value" THEN this will return "value" 2) IF "name=" THEN this will return null 3) IF name is not defined in the config THEN this will return "" (empty string)
`String`	`getString(String name, String dflt)` Access some named configuration value as a string. 1) IF "name=value" THEN this will return "value" 2) IF "name=" THEN this will return null 3) IF name is not defined in the config THEN this will return the provided default value
`String[]`	`getStrings(String name)` Access some named configuration values as an array of strings.
`List<String>`	`getToolCategories(String category)` access the list of tool categories for the given site type
`Map<String,List<String>>`	`getToolCategoriesAsMap(String category)` access the map of tool categories to tool ids for this site type
`List<String>`	`getToolGroup(String category)` KNL-989 Access the list of tools by group
`List<String>`	`getToolOrder(String category)` KNL-989 Access the list of tool ids in order for this category, to impose on the displays of many tools
`List<String>`	`getToolsRequired(String category)` Access the list of tool ids that are required for this category.
`Map<String,String>`	`getToolToCategoryMap(String category)` access a map of tool id to tool category id for this site type
`String`	`getToolUrl()` Access the URL to the tool dispatcher service on the server - append any additional path to the end.
`String`	`getUserHomeUrl()` Access the URL to the user's "home" (My Workspace) in the service.
`ServerConfigurationService.ConfigItem`	`registerConfigItem(ServerConfigurationService.ConfigItem configItem)` Register a configuration item (or override an existing config), this should be called when changing or creating a configuration setting
`void`	`registerListener(ServerConfigurationService.ConfigurationListener configurationListener)` Register a listener which will be notified whenever there is a configuration setting change, there is no need to unregister a listener as all listener references will be held weakly (if there are no more variables which reference the listener then it will be GCed and removed from the list of listeners) Registering the same `ServerConfigurationService.ConfigurationListener` object multiple times has no effect
`boolean`	`toolGroupIsRequired(String groupName, String toolId)` KNL-989 Returns true if selected tool is contained in pre-initialized list of required items
`boolean`	`toolGroupIsSelected(String groupName, String toolId)` KNL-989 Returns true if selected tool is contained in pre-initialized list of selected items

- Field Detail
  - SERVICE_NAME
```
static final String SERVICE_NAME
```
    This string can be used to find the service in the service manager.
  - CURRENT_SERVER_URL
```
static final String CURRENT_SERVER_URL
```
    Key in the ThreadLocalManager for the serverUrl based on the current request.
    
    See Also:
    Constant Field Values
  - CURRENT_PORTAL_PATH
```
static final String CURRENT_PORTAL_PATH
```
    Key in the ThreadLocalManager for the path based on the current request.
    
    See Also:
    Constant Field Values
  - UNKNOWN
```
static final String UNKNOWN
```
    See Also:
    Constant Field Values
  - TYPE_BOOLEAN
```
static final String TYPE_BOOLEAN
```
    See Also:
    Constant Field Values
  - TYPE_INT
```
static final String TYPE_INT
```
    See Also:
    Constant Field Values
  - TYPE_ARRAY
```
static final String TYPE_ARRAY
```
    See Also:
    Constant Field Values
  - TYPE_STRING
```
static final String TYPE_STRING
```
    See Also:
    Constant Field Values
  - TYPES
```
static final String[] TYPES
```
- Method Detail
  - getServerId
```
String getServerId()
```
    Access the unique (to the cluster) id of the server.
    
    Returns:
    The unique (to the cluster) id of the server.
  - getServerInstance
```
String getServerInstance()
```
    Access the unique (to the cluster) instance id of the server.
    
    Returns:
    The unique (to the cluster) instance id of the server.
  - getServerIdInstance
```
String getServerIdInstance()
```
    Access the combined server / instance id.
    
    Returns:
    The combined server / instance id.
  - getServerName
```
String getServerName()
```
    Access the server DNS name.
    
    Returns:
    The server DNS name.
  - getServerUrl
```
String getServerUrl()
```
    Access the URL to the root of the server - append any additional path to the end.
    
    Returns:
    The URL to the root of the server.
  - getHelpUrl
```
String getHelpUrl(String helpContext)
```
    Access the URL to the help service on the server - append in the path the tool well known id for context sensitive help.
    
    Parameters:
    helpContext - The context string.
    
    Returns:
    The URL to the help service on the server.
  - getAccessUrl
```
String getAccessUrl()
```
    Access the URL to the access service on the server - append any additional path to the end.
    
    Returns:
    The URL to the access service on the server.
  - getAccessPath
```
String getAccessPath()
```
    Access the path to the access service on the server relative to the base URL for the server.
    
    Returns:
    The path to the access service on the server.
  - getPortalUrl
```
String getPortalUrl()
```
    Access the URL to the portal service on the server - append any additional path to the end.
    
    Returns:
    The URL to the portal service on the server.
  - getToolUrl
```
String getToolUrl()
```
    Access the URL to the tool dispatcher service on the server - append any additional path to the end.
    
    Returns:
    The URL to the tool dispatcher service on the server.
  - getGatewaySiteId
```
String getGatewaySiteId()
```
    Access the site id for the gateway (public) site.
    
    Returns:
    The site id for the gateway (public) site.
  - getLoggedOutUrl
```
String getLoggedOutUrl()
```
    Access the URL to use as a redirect when the user has logged out.
    
    Returns:
    The URL to use as a redirect when the user has logged out.
  - getUserHomeUrl
```
String getUserHomeUrl()
```
    Access the URL to the user's "home" (My Workspace) in the service.
    
    Returns:
    The URL to the user's "home" (My Workspace) in the service.
  - getSakaiHomePath
```
String getSakaiHomePath()
```
    Access the file path to the "sakai home" on the app server.
    
    Returns:
    The file path to the "sakai home" on the app server.
  - getString
```
String getString(String name)
```
    Access some named configuration value as a string. 1) IF "name=value" THEN this will return "value" 2) IF "name=" THEN this will return null 3) IF name is not defined in the config THEN this will return "" (empty string)
    
    Parameters:
    name - The configuration value name (or key).
    
    Returns:
    The configuration value for this name OR null if defined as 'blank' OR "" (empty string) if not defined.
  - getString
```
String getString(String name,
               String dflt)
```
    Access some named configuration value as a string. 1) IF "name=value" THEN this will return "value" 2) IF "name=" THEN this will return null 3) IF name is not defined in the config THEN this will return the provided default value
    
    Parameters:
    name - The configuration value name (or key).
    dflt - The value to return if not found in the config.
    
    Returns:
    The configuration value for this name OR null if defined as 'blank' OR default value if not defined.
  - getStrings
```
String[] getStrings(String name)
```
    Access some named configuration values as an array of strings. There are 2 ways this is indicated in the system: 1) The name is the base name. name + ".count" must be defined to be a positive integer - how many are defined. name + "." + i (1..count) must be defined to be the values. 2) A comma delimited list of values: name=val1,val2,val3 If count is 0 or the value is empty then an empty string array is the resulting return value. Null is returned ONLY in the case the value cannot be found at all.
    
    Parameters:
    name - The configuration value name base.
    
    Returns:
    The configuration value with this name, empty array if no values or count=0, OR null if config name is not found.
  - getInt
```
int getInt(String name,
         int dflt)
```
    Access some named configuration value as an int.
    
    Parameters:
    name - The configuration value name.
    dflt - The value to return if not found.
    
    Returns:
    The configuration value with this name, or the default value if not found.
  - getBoolean
```
boolean getBoolean(String name,
                 boolean dflt)
```
    Access some named configuration value as a boolean.
    
    Parameters:
    name - The configuration value name.
    dflt - The value to return if not found.
    
    Returns:
    The configuration value with this name, or the default value if not found.
  - getRawProperty
```
String getRawProperty(String name)
```
    Access the undereferenced value of the given property. That is, Spring-style property placeholders will not be expanded as they would be in other getters on this interface. For example, consider the following configuration:
```
 
 property1=foo
 property2=${property1}
 
 
```
    Invoking getString(String), passing "property2" will return "foo". However, invoking this method with the same argument will return "${property1}".
    
    Typically, a client of this method, e.g. a dynamic configuration management tool, is interested in reporting on the system's actual state from which return values of other getters are calculated. In such cases, caller-specified default values have no utility. Thus this method does not accept an argument specifying the property's default value.
    
    For a given undefined property "X", this method should return exactly the same value as getString("X"). Thus it may not be possible in all cases to distinguish between defined and undefined properties.
    Parameters:
    name - a property name. Must not be null
    
    Returns:
    the property value. Property placeholders will not have been dereferenced. The value representing an non-existent property is implementation dependent.
  - getToolGroup
```
List<String> getToolGroup(String category)
```
    KNL-989 Access the list of tools by group
    
    Parameters:
    category - The tool category
    
    Returns:
    An unordered list of tool ids (String) in selected group, or an empty list if there are none for this category.
  - getToolOrder
```
List<String> getToolOrder(String category)
```
    KNL-989 Access the list of tool ids in order for this category, to impose on the displays of many tools
    
    Parameters:
    category - Site type
    
    Returns:
    An unordered list of group names (String), or an empty list if there are none for this category.
  - toolGroupIsSelected
```
boolean toolGroupIsSelected(String groupName,
                          String toolId)
```
    KNL-989 Returns true if selected tool is contained in pre-initialized list of selected items
  - toolGroupIsRequired
```
boolean toolGroupIsRequired(String groupName,
                          String toolId)
```
    KNL-989 Returns true if selected tool is contained in pre-initialized list of required items
  - getCategoryGroups
```
List<String> getCategoryGroups(String category)
```
    KNL-989 Access the list of groups by category (site type)
    
    Parameters:
    category - The tool category
    
    Returns:
    An ordered list of tool ids (String) indicating the desired tool display order, or an empty list if there are none for this category.
  - getToolsRequired
```
List<String> getToolsRequired(String category)
```
    Access the list of tool ids that are required for this category.
    
    Parameters:
    category - The tool category.
    
    Returns:
    A list of tool ids (String) that are required for this category, or an empty list if there are none for this category.
  - getDefaultTools
```
List<String> getDefaultTools(String category)
```
    Access the list of tool ids that are selected by default for this category.
    
    Parameters:
    category - The tool category.
    
    Returns:
    A list of tool ids (String) for this category to use by default, or an empty list if there are none for this category.
  - getToolCategories
```
List<String> getToolCategories(String category)
```
    access the list of tool categories for the given site type
    
    Parameters:
    category - the site type
    
    Returns:
    a list of tool category ids in order
  - getToolCategoriesAsMap
```
Map<String,List<String>> getToolCategoriesAsMap(String category)
```
    access the map of tool categories to tool ids for this site type
    
    Parameters:
    category - the site type
    
    Returns:
    a map of tool category ids to tool ids
  - getToolToCategoryMap
```
Map<String,String> getToolToCategoryMap(String category)
```
    access a map of tool id to tool category id for this site type
    
    Parameters:
    category - the site type
    
    Returns:
    map with tool id as key and category id as value
  - getSakaiLocales
```
Locale[] getSakaiLocales()
```
    Get the list of allowed locales as controlled by config params for "locales" and "locales.more" Defaults when nothing is specified in the config files come from SakaiLocales.SAKAI_LOCALES_DEFAULT
    
    Returns:
    an array of all allowed Locales for this installation
    See Also:
    SakaiLocales
  - getLocaleFromString
```
Locale getLocaleFromString(String localeString)
```
    Parse a string into a Locale
    
    Returns:
    Locale based on its string representation (language_region) OR default Locale if the string cannot be parsed
  - getConfig
```
<T> T getConfig(String name,
              T defaultValue)
```
    Retrieves config values from the configuration service
    
    Parameters:
    name - the name of the setting to retrieve, Should be a string name: e.g. auto.ddl, mystuff.config, etc.
    defaultValue - a specified default value to return if this setting cannot be found, NOTE: You can set the default value to null but you must specify the class type in parens
    
    Returns:
    the value of the configuration setting OR the default value if none can be found
  - getConfigItem
```
ServerConfigurationService.ConfigItem getConfigItem(String name)
```
    Retrieve the internally stored the config item, this is not really for general use, if you want the value of a configuration variable then you should use getConfig(String, Object)
    
    Parameters:
    name - the name of the setting to retrieve, Should be a string name: e.g. auto.ddl, mystuff.config, etc.
    
    Returns:
    the config item OR null if none exists
  - registerConfigItem
```
ServerConfigurationService.ConfigItem registerConfigItem(ServerConfigurationService.ConfigItem configItem)
```
    Register a configuration item (or override an existing config), this should be called when changing or creating a configuration setting
    
    Parameters:
    configItem - an instance of the ServerConfigurationService.ConfigItem interface with the name, value, source params set, use BasicConfigItem as an easy way to construct a ServerConfigurationService.ConfigItem
    
    Returns:
    the registered ServerConfigurationService.ConfigItem
    
    Throws:
    
    IllegalArgumentException - if the ServerConfigurationService.ConfigItem is not valid (does not have all required fields set)
  - registerListener
```
void registerListener(ServerConfigurationService.ConfigurationListener configurationListener)
```
    Register a listener which will be notified whenever there is a configuration setting change, there is no need to unregister a listener as all listener references will be held weakly (if there are no more variables which reference the listener then it will be GCed and removed from the list of listeners) Registering the same ServerConfigurationService.ConfigurationListener object multiple times has no effect
    
    Parameters:
    configurationListener - a ServerConfigurationService.ConfigurationListener object
  - getConfigData
```
ServerConfigurationService.ConfigData getConfigData()
```
    Returns data about all the configuration values which are known to the system at the time and some stats which are useful
    
    Returns:
    a config data class with data about the known configuration values

Interface ServerConfigurationService

Nested Class Summary

Field Summary

Method Summary

Field Detail

SERVICE_NAME

CURRENT_SERVER_URL

CURRENT_PORTAL_PATH

UNKNOWN

TYPE_BOOLEAN

TYPE_INT

TYPE_ARRAY

TYPE_STRING

TYPES

Method Detail

getServerId

getServerInstance

getServerIdInstance

getServerName

getServerUrl

getHelpUrl

getAccessUrl

getAccessPath

getPortalUrl

getToolUrl

getGatewaySiteId

getLoggedOutUrl

getUserHomeUrl

getSakaiHomePath

getString

getString

getStrings

getInt

getBoolean

getRawProperty

getToolGroup

getToolOrder

toolGroupIsSelected

toolGroupIsRequired

getCategoryGroups

getToolsRequired

getDefaultTools

getToolCategories

getToolCategoriesAsMap

getToolToCategoryMap

getSakaiLocales

getLocaleFromString

getConfig

getConfigItem

registerConfigItem

registerListener

getConfigData