Examples with Packager org.xwiki.extension.xar.internal.handler.packager.Packager used on opensource projects

Example 1 with Packager

use of org.xwiki.extension.xar.internal.handler.packager.Packager in project xwiki-platform by xwiki.

the class XarExtensionJobFinishedListener method onEvent.

@Override
public void onEvent(Event event, Object source, Object data) {
    JobFinishingEvent jobFinishingEvent = (JobFinishingEvent) event;
    if (!jobFinishingEvent.getRequest().isRemote()) {
        ExecutionContext context = this.execution.getContext();
        if (context != null) {
            XarExtensionPlan xarExtensionPlan = (XarExtensionPlan) context.getProperty(XarExtensionPlan.CONTEXTKEY_XARINSTALLPLAN);
            if (xarExtensionPlan != null) {
                try {
                    Map<String, Map<XarEntry, XarExtensionPlanEntry>> previousXAREntries = xarExtensionPlan.previousXAREntries;
                    Map<String, Map<XarEntry, LocalExtension>> nextXAREntries = xarExtensionPlan.nextXAREntries;
                    Map<XarEntry, LocalExtension> rootNextPages = nextXAREntries.get(null);
                    if (rootNextPages == null) {
                        rootNextPages = Collections.emptyMap();
                    }
                    XWikiContext xcontext = this.xcontextProvider.get();
                    Packager packager = this.packagerProvider.get();
                    // Get pages to delete
                    Set<DocumentReference> pagesToDelete = new HashSet<DocumentReference>();
                    for (Map.Entry<String, Map<XarEntry, XarExtensionPlanEntry>> previousWikiEntry : previousXAREntries.entrySet()) {
                        if (!previousWikiEntry.getValue().isEmpty()) {
                            try {
                                List<DocumentReference> references = packager.getDocumentReferences(previousWikiEntry.getValue().keySet(), createPackageConfiguration(jobFinishingEvent.getRequest(), previousWikiEntry.getKey()));
                                for (DocumentReference reference : references) {
                                    // propose to enable them)
                                    if (((XarInstalledExtensionRepository) this.xarRepository).getXarInstalledExtensions(reference).isEmpty()) {
                                        pagesToDelete.add(reference);
                                    }
                                }
                            } catch (Exception e) {
                                this.logger.warn("Exception when cleaning pages removed since previous xar extension version", e);
                            }
                        }
                    }
                    // Create cleanup question
                    CleanPagesQuestion question = new CleanPagesQuestion(pagesToDelete);
                    Map<DocumentReference, Boolean> pages = question.getPages();
                    // Remove pages which are in the next XAR packages
                    for (DocumentReference previousReference : pagesToDelete) {
                        if (xarExtensionPlan.containsNewPage(previousReference)) {
                            pages.remove(previousReference);
                        }
                    }
                    for (Map.Entry<DocumentReference, Boolean> entry : pages.entrySet()) {
                        DocumentReference reference = entry.getKey();
                        // Get current
                        XWikiDocument currentDocument;
                        try {
                            currentDocument = xcontext.getWiki().getDocument(reference, xcontext);
                        } catch (Exception e) {
                            this.logger.error("Failed to get document [{}]", reference, e);
                            // Lets be safe and skip removing that page
                            pages.put(reference, false);
                            continue;
                        }
                        if (currentDocument.isNew()) {
                            // Current already removed
                            pages.put(reference, false);
                            continue;
                        }
                        // Get previous
                        XWikiDocument previousDocument;
                        try {
                            previousDocument = xarExtensionPlan.getPreviousXWikiDocument(reference, packager);
                        } catch (Exception e) {
                            this.logger.error("Failed to get previous version of document [{}]", reference, e);
                            // Lets be safe and skip removing that page
                            pages.put(reference, false);
                            continue;
                        }
                        // Compare previous and current
                        try {
                            currentDocument.loadAttachmentsContentSafe(xcontext);
                            if (!currentDocument.equalsData(previousDocument)) {
                                // conflict between current and new
                                pages.put(reference, false);
                            }
                        } catch (Exception e) {
                            this.logger.error("Failed to load attachments", e);
                            // Lets be safe and skip removing that page
                            pages.put(reference, false);
                            continue;
                        }
                    }
                    // Ask confirmation
                    if (!pages.isEmpty() && jobFinishingEvent.getRequest().isInteractive()) {
                        try {
                            ((Job) source).getStatus().ask(question);
                        } catch (InterruptedException e) {
                            this.logger.warn("The thread has been interrupted", e);
                            // The thread has been interrupted, do nothing
                            return;
                        }
                    }
                    // Delete pages
                    PackageConfiguration configuration = createPackageConfiguration(jobFinishingEvent.getRequest());
                    for (Map.Entry<DocumentReference, Boolean> entry : pages.entrySet()) {
                        if (entry.getValue()) {
                            packager.deleteDocument(entry.getKey(), configuration);
                        }
                    }
                } finally {
                    // Cleanup extension plan
                    try {
                        xarExtensionPlan.close();
                    } catch (IOException e) {
                        this.logger.error("Failed to close XAR extension plan", e);
                    }
                    context.setProperty(XarExtensionPlan.CONTEXTKEY_XARINSTALLPLAN, null);
                }
            }
        }
    }
}