private Void launchApplication()

in server/src/main/java/com/epam/aidial/core/server/service/ApplicationService.java [516:568]
39 lines of code
8 McCabe index (conditional complexity)

    private Void launchApplication(ProxyContext context, ResourceDescriptor resource) {
        // right now there is no lock watchdog mechanism
        // this lock can expire before this operation is finished
        // for extra safety the controller timeout is less than lock timeout
        try (LockService.Lock lock = lockService.tryLock(deploymentLockKey(resource))) {
            if (lock == null) {
                throw new IllegalStateException("Application function is locked");
            }

            Application application = getApplication(resource).getValue();
            Application.Function function = application.getFunction();

            if (function == null) {
                throw new IllegalStateException("Application has no function");
            }

            if (function.getStatus() != Application.Function.Status.DEPLOYING) {
                throw new IllegalStateException("Application is not starting");
            }

            // for public/review application source folder is equal to target folder
            // source files are copied to read-only deployment bucket for such applications
            if (!isPublicOrReview(resource)) {
                copyFolder(function.getSourceFolder(), function.getTargetFolder(), false);
            }

            controller.createApplicationImage(context, function);
            String endpoint = controller.createApplicationDeployment(context, function);

            resourceService.computeResource(resource, json -> {
                Application existing = ProxyUtil.convertToObject(json, Application.class);
                if (existing == null || !Objects.equals(existing.getFunction(), application.getFunction())) {
                    throw new IllegalStateException("Application function has been updated");
                }

                function.setStatus(Application.Function.Status.DEPLOYED);
                existing.setFunction(function);
                existing.setEndpoint(buildMapping(endpoint, function.getMapping().getChatCompletion()));
                existing.getFeatures().setRateEndpoint(buildMapping(endpoint, function.getMapping().getRate()));
                existing.getFeatures().setTokenizeEndpoint(buildMapping(endpoint, function.getMapping().getTokenize()));
                existing.getFeatures().setTruncatePromptEndpoint(buildMapping(endpoint, function.getMapping().getTruncatePrompt()));
                existing.getFeatures().setConfigurationEndpoint(buildMapping(endpoint, function.getMapping().getConfiguration()));

                return ProxyUtil.convertToString(existing);
            });

            pendingApplications.remove(resource.getUrl());
            return null;
        } catch (Throwable error) {
            log.warn("Failed to launch application: {}", resource.getUrl(), error);
            throw error;
        }
    }