hudson.model

Class DownloadService.Downloadable

java.lang.Object

hudson.model.DownloadService.Downloadable

All Implemented Interfaces:

ExtensionPoint

Enclosing class:

DownloadService

public static class DownloadService.Downloadable
extends Object
implements ExtensionPoint

Represents a periodically updated JSON data file obtained from a remote URL.

This mechanism is one of the basis of the update center, which involves fetching up-to-date data file.

Since:

1.305

Nested Class Summary

Nested classes/interfaces inherited from interface hudson.ExtensionPoint

ExtensionPoint.LegacyInstancesAreScopedToHudson

Constructor Summary

Constructors

Constructor and Description
Downloadable()
Downloadable(Class id) Uses the class name as an ID.
Downloadable(String id)
Downloadable(String id, String url)
Downloadable(String id, String url, long interval)

Method Summary

Modifier and Type	Method and Description
static ExtensionList<DownloadService.Downloadable>	all() Returns all the registered DownloadService.Downloadables.
void	doPostBack(org.kohsuke.stapler.StaplerRequest req, org.kohsuke.stapler.StaplerResponse rsp) This is where the browser sends us the data.
static DownloadService.Downloadable	get(String id) Returns the DownloadService.Downloadable that has the given ID.
net.sf.json.JSONObject	getData() Loads the current file into JSON and returns it, or null if no data exists.
TextFile	getDataFile() This is where the retrieved file will be stored.
long	getDue() When shall we retrieve this file next time?
String	getId()
long	getInterval() How often do we retrieve the new image?
String	getUrl() URL to download.
List<String>	getUrls() URLs to download from.
static <T> boolean	hasDuplicates(List<T> genericList, String comparator) check if the list of update center entries has duplicates
net.sf.json.JSONObject	reduce(List<net.sf.json.JSONObject> jsonList) Function that takes multiple JSONObjects and returns a single one.
FormValidation	updateNow()

Methods inherited from class java.lang.Object

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

Constructor Detail

Downloadable

public Downloadable(String id,
                    String url,
                    long interval)

Parameters:

url - URL relative to UpdateCenter.getDefaultBaseUrl(). So if this string is "foo.json", the ultimate URL will be something like "http://updates.jenkins-ci.org/updates/foo.json" For security and privacy reasons, we don't allow the retrieval from random locations.

Downloadable

public Downloadable()

Downloadable

public Downloadable(Class id)

Uses the class name as an ID.

Downloadable

public Downloadable(String id)

Downloadable

public Downloadable(String id,
                    String url)

Method Detail

getId

public String getId()

getUrl

public String getUrl()

URL to download.

getUrls

public List<String> getUrls()

URLs to download from.

getInterval

public long getInterval()

How often do we retrieve the new image?

Returns:

number of milliseconds between retrieval.

getDataFile

public TextFile getDataFile()

This is where the retrieved file will be stored.

getDue

public long getDue()

When shall we retrieve this file next time?

getData

public net.sf.json.JSONObject getData()
                               throws IOException

Loads the current file into JSON and returns it, or null if no data exists.

Throws:

IOException

doPostBack

public void doPostBack(org.kohsuke.stapler.StaplerRequest req,
                       org.kohsuke.stapler.StaplerResponse rsp)
                throws IOException

This is where the browser sends us the data.

Throws:

IOException

updateNow

@Restricted(value=org.kohsuke.accmod.restrictions.NoExternalUse.class)
public FormValidation updateNow()
                                                                                                throws IOException

Throws:

IOException

reduce

public net.sf.json.JSONObject reduce(List<net.sf.json.JSONObject> jsonList)

Function that takes multiple JSONObjects and returns a single one.

Parameters:

jsonList - to be processed

Returns:

a single JSONObject

hasDuplicates

public static <T> boolean hasDuplicates(List<T> genericList,
                                        String comparator)

check if the list of update center entries has duplicates

Type Parameters:

T - the generic class

Parameters:

genericList - list of entries coming from multiple update centers

comparator - the unique ID of an entry

Returns:

true if the list has duplicates, false otherwise

all

public static ExtensionList<DownloadService.Downloadable> all()

Returns all the registered DownloadService.Downloadables.

get

public static DownloadService.Downloadable get(String id)

Returns the DownloadService.Downloadable that has the given ID.