Examples with ScriptHelper com.disney.groovity.util.ScriptHelper used on opensource projects

Example 6 with ScriptHelper

use of com.disney.groovity.util.ScriptHelper in project groovity by disney.

the class Http method tag.

@SuppressWarnings({ "rawtypes", "unchecked" })
public Object tag(Map attributes, Closure body) throws Exception {
    Object url = resolve(attributes, "url");
    if (url == null) {
        throw new RuntimeException("<g:http> requires 'url' attribute");
    }
    Object var = resolve(attributes, VAR);
    String method = "GET";
    Object methodAtt = resolve(attributes, "method");
    if (methodAtt != null) {
        method = methodAtt.toString();
    }
    boolean followRedirects = true;
    Object redirectsAtt = resolve(attributes, "redirects");
    if (redirectsAtt != null) {
        followRedirects = Boolean.parseBoolean(redirectsAtt.toString());
    }
    CookieOption cookieOption = CookieOption.DEFAULT;
    Object cookiesAtt = resolve(attributes, "cookies");
    if (cookiesAtt != null) {
        cookieOption = CookieOption.valueOf(cookiesAtt.toString().toUpperCase());
    }
    Object timeout = resolve(attributes, TIMEOUT);
    final int timeoutSeconds = timeout == null ? -1 : timeout instanceof Number ? ((Number) timeout).intValue() : Integer.parseInt(timeout.toString());
    Object target = resolve(attributes, "to");
    if (target instanceof Class) {
        if (!Object.class.equals(target)) {
            target = ((Class) target).newInstance();
        }
    }
    if (target == null) {
        target = Object.class;
    }
    Object async = resolve(attributes, "async");
    if (async != null && !(async instanceof Boolean)) {
        async = Boolean.valueOf(async.toString());
    }
    HttpEntity dataEntity = null;
    Object data = resolve(attributes, "data");
    HttpClientContext clientContext = resolve(attributes, "context", HttpClientContext.class);
    if (clientContext == null) {
        clientContext = HttpClientContext.create();
    }
    if (clientContext.getCookieStore() == null) {
        // we don't want to let cookies be shared across contexts
        clientContext.setCookieStore(new BasicCookieStore());
    }
    if (clientContext.getAuthCache() == null) {
        // we also don't want to share credentials across contexts
        clientContext.setAuthCache(new BasicAuthCache());
    }
    final HttpClientContext fContext = clientContext;
    ScriptHelper context = getScriptHelper(body);
    Object oldOut = get(context, OUT);
    // execute body to assemble URL params, headers, post body
    Map variables = context.getBinding().getVariables();
    URI uri;
    URIBuilder builder;
    ArrayList<Header> headers;
    Optional<UserPass> userPass;
    Optional<HttpSignatureSigner> signer;
    Optional<HttpRequestInterceptor> interceptor;
    try {
        builder = new URIBuilder(url.toString());
        bind(context, Uri.CURRENT_URI_BUILDER, builder);
        headers = new ArrayList<Header>();
        bind(context, com.disney.groovity.tags.Header.CURRENT_LIST_FOR_HEADERS, headers);
        Credentials.acceptCredentials(variables);
        Signature.acceptSigner(variables);
        acceptInterceptor(variables);
        StringWriter sw = new StringWriter();
        bind(context, OUT, sw);
        try {
            Object rval = body.call();
            if (rval instanceof Writable) {
                ((Writable) rval).writeTo(sw);
            }
        } finally {
            bind(context, OUT, oldOut);
            userPass = Credentials.resolveCredentials(variables);
            signer = Signature.resolveSigner(variables);
            interceptor = resolveInterceptor(variables);
        }
        String val = sw.toString();
        if (val.trim().length() > 0) {
            dataEntity = new StringEntity(val);
        }
        uri = builder.build();
        if (userPass.isPresent()) {
            CredentialsProvider credsProvider = new BasicCredentialsProvider();
            credsProvider.setCredentials(new AuthScope(uri.getHost(), uri.getPort()), new UsernamePasswordCredentials(userPass.get().getUser(), new String(userPass.get().getPass())));
            clientContext.setCredentialsProvider(credsProvider);
        }
    } catch (URISyntaxException e1) {
        throw new RuntimeException("Invalid URI " + url, e1);
    } finally {
        unbind(context, Uri.CURRENT_URI_BUILDER);
        unbind(context, com.disney.groovity.tags.Header.CURRENT_LIST_FOR_HEADERS);
    }
    final HttpRequestBase request = "POST".equalsIgnoreCase(method) ? new HttpPost(uri) : "PUT".equalsIgnoreCase(method) ? new HttpPut(uri) : "HEAD".equalsIgnoreCase(method) ? new HttpHead(uri) : "DELETE".equalsIgnoreCase(method) ? new HttpDelete(uri) : "OPTIONS".equalsIgnoreCase(method) ? new HttpOptions(uri) : new HttpGet(uri);
    if (headers.size() > 0) {
        request.setHeaders(headers.toArray(new Header[0]));
    }
    if (request instanceof HttpEntityEnclosingRequest) {
        if (data != null) {
            // decide on strategy to convert data to entity
            if (data instanceof HttpEntity) {
                dataEntity = (HttpEntity) data;
            } else {
                // look at content type for a hint
                Header targetType = request.getFirstHeader("Content-Type");
                if (targetType != null && targetType.getValue().contains("json")) {
                    CharArrayWriter caw = new CharArrayWriter();
                    new ModelJsonWriter(caw).visit(data);
                    dataEntity = new StringEntity(caw.toString());
                } else if (targetType != null && targetType.getValue().contains("xml")) {
                    if (data instanceof groovy.util.Node) {
                        dataEntity = new StringEntity(XmlUtil.serialize((groovy.util.Node) data));
                    } else if (data instanceof GPathResult) {
                        dataEntity = new StringEntity(XmlUtil.serialize((GPathResult) data));
                    } else if (data instanceof Element) {
                        dataEntity = new StringEntity(XmlUtil.serialize((Element) data));
                    } else if (data instanceof Document) {
                        dataEntity = new StringEntity(XmlUtil.serialize(((Document) data).getDocumentElement()));
                    } else {
                        // if it's not an XML model assume it's a well formed XML string
                        dataEntity = new StringEntity(data.toString());
                    }
                } else if ((targetType != null && targetType.getValue().contains("x-www-form-urlencoded")) || (targetType == null && (data instanceof Map || data instanceof List))) {
                    // key/value pairs, accept a map, a list of maps, or a list of NameValuePairs
                    Iterator source = data instanceof Map ? ((Map) data).entrySet().iterator() : ((List) data).iterator();
                    ArrayList<NameValuePair> pairs = new ArrayList<NameValuePair>();
                    while (source.hasNext()) {
                        Object next = source.next();
                        if (next instanceof Map.Entry) {
                            Map.Entry entry = (Entry) next;
                            pairs.add(new BasicNameValuePair(entry.getKey().toString(), entry.getValue() != null ? entry.getValue().toString() : ""));
                        } else if (next instanceof NameValuePair) {
                            pairs.add((NameValuePair) next);
                        } else if (next instanceof Map) {
                            Iterator<Map.Entry> sub = ((Map) next).entrySet().iterator();
                            while (sub.hasNext()) {
                                Map.Entry se = sub.next();
                                pairs.add(new BasicNameValuePair(se.getKey().toString(), se.getValue() != null ? se.getValue().toString() : ""));
                            }
                        }
                    }
                    dataEntity = new UrlEncodedFormEntity(pairs);
                } else if (targetType != null && targetType.getValue().contains("multipart/form-data")) {
                    // list of maps, each map must contain "name" and "body", plus optional "type" and "filename"
                    Iterator<Map> parts = ((List<Map>) data).iterator();
                    MultipartEntityBuilder meBuilder = MultipartEntityBuilder.create();
                    while (parts.hasNext()) {
                        Map part = parts.next();
                        Object pbody = part.get("body");
                        String name = (String) part.get("name");
                        String type = (String) part.get("type");
                        String filename = (String) part.get("filename");
                        ContentType ct = type != null ? ContentType.parse(type) : null;
                        if (pbody instanceof File) {
                            if (ct == null) {
                                ct = ContentType.DEFAULT_BINARY;
                            }
                            meBuilder.addBinaryBody(name, (File) pbody, ct, filename);
                        } else if (pbody instanceof byte[]) {
                            if (ct == null) {
                                ct = ContentType.DEFAULT_BINARY;
                            }
                            meBuilder.addBinaryBody(name, (byte[]) pbody, ct, filename);
                        } else if (pbody instanceof ContentBody) {
                            meBuilder.addPart(name, (ContentBody) pbody);
                        } else if (pbody instanceof InputStream) {
                            if (ct == null) {
                                ct = ContentType.DEFAULT_BINARY;
                            }
                            meBuilder.addBinaryBody(name, (InputStream) pbody, ct, filename);
                        } else {
                            if (ct == null) {
                                ct = ContentType.DEFAULT_TEXT;
                            }
                            meBuilder.addTextBody(name, pbody.toString(), ct);
                        }
                    }
                    dataEntity = meBuilder.build();
                } else {
                    // no help from content type header, check for modeled XML
                    if (data instanceof groovy.util.Node) {
                        dataEntity = new StringEntity(XmlUtil.serialize((groovy.util.Node) data), ContentType.APPLICATION_XML);
                    } else if (data instanceof GPathResult) {
                        dataEntity = new StringEntity(XmlUtil.serialize((GPathResult) data), ContentType.APPLICATION_XML);
                    } else if (data instanceof Element) {
                        dataEntity = new StringEntity(XmlUtil.serialize((Element) data), ContentType.APPLICATION_XML);
                    } else if (data instanceof Document) {
                        dataEntity = new StringEntity(XmlUtil.serialize(((Document) data).getDocumentElement()), ContentType.APPLICATION_XML);
                    } else if (data instanceof byte[]) {
                        dataEntity = new ByteArrayEntity((byte[]) data);
                    } else if (data instanceof InputStream) {
                        dataEntity = new InputStreamEntity((InputStream) data);
                    } else if (data instanceof File) {
                        dataEntity = new FileEntity((File) data);
                    } else {
                        // best option left is to post the toString value of the data
                        dataEntity = new StringEntity(data.toString());
                    }
                }
            }
        }
        if (dataEntity != null) {
            ((HttpEntityEnclosingRequest) request).setEntity(dataEntity);
        }
    }
    RequestConfig.Builder configBuilder = request.getConfig() == null ? RequestConfig.custom() : RequestConfig.copy(request.getConfig());
    if (!followRedirects) {
        configBuilder.setRedirectsEnabled(followRedirects);
    }
    configBuilder.setCookieSpec(cookieOption.getCookieSpec());
    request.setConfig(configBuilder.build());
    final String varName = var != null ? var.toString() : null;
    ResponseHandler handler = null;
    try {
        Function handlerFunction = (Function) get(body, Handler.HANDLER_BINDING);
        if (handlerFunction != null) {
            handler = new ResponseHandler<Object>() {

                @Override
                public Object handleResponse(HttpResponse response) throws ClientProtocolException, IOException {
                    return handlerFunction.apply(response);
                }
            };
        }
        unbind(body, Handler.HANDLER_BINDING);
    } catch (Exception e) {
    }
    if (handler == null) {
        handler = new AutoParsingResponseHandler(target);
    }
    final List<HttpRequestInterceptor> interceptors = new ArrayList<>();
    if (signer.isPresent()) {
        interceptors.add(signer.get());
    }
    if (interceptor.isPresent()) {
        interceptors.add(interceptor.get());
    }
    final ResponseHandler rHandler = handler;
    final boolean isAsync = (async != null && Boolean.TRUE.equals(async));
    Callable<Object> requester = new Callable() {

        public Object call() throws Exception {
            TimeoutTask timeoutTask = null;
            if (timeoutSeconds > 0) {
                timeoutTask = new TimeoutTask(request);
                timeoutTimer.schedule(timeoutTask, timeoutSeconds * 1000);
            }
            try {
                Binding oldThreadBinding = null;
                if (isAsync) {
                    oldThreadBinding = ScriptHelper.THREAD_BINDING.get();
                    Binding asyncBinding = new Binding();
                    asyncBinding.setVariable("request", request);
                    ScriptHelper.THREAD_BINDING.set(asyncBinding);
                }
                try {
                    for (HttpRequestInterceptor interceptor : interceptors) {
                        interceptor.process(request, null);
                    }
                    return httpClient.execute(request, rHandler, fContext);
                } finally {
                    if (isAsync) {
                        if (oldThreadBinding == null) {
                            ScriptHelper.THREAD_BINDING.remove();
                        } else {
                            ScriptHelper.THREAD_BINDING.set(oldThreadBinding);
                        }
                    }
                }
            } catch (HttpResponseException e) {
                if (isAsync) {
                    log.error("Async HTTP response error for " + request.getURI() + ": " + e.getMessage());
                }
                throw e;
            } catch (Exception e) {
                if (request.isAborted()) {
                    if (isAsync) {
                        log.error("Async <g:http> request timed out for " + request.getURI());
                    }
                    throw new TimeoutException("Timed out executing <g:http> for " + request.getURI());
                } else {
                    if (isAsync) {
                        log.error("Async <g:http> request error for " + request.getURI(), e);
                    }
                    throw new RuntimeException("Error executing <g:http> for " + request.getURI(), e);
                }
            } finally {
                if (timeoutTask != null) {
                    timeoutTask.cancel();
                }
            }
        }
    };
    Object responseVar = null;
    if (isAsync) {
        // return the Future to the calling code
        Future<Object> f = asyncExecutor.submit(requester);
        responseVar = new Future<Object>() {

            @Override
            public boolean cancel(boolean mayInterruptIfRunning) {
                return f.cancel(mayInterruptIfRunning);
            }

            @Override
            public boolean isCancelled() {
                return f.isCancelled();
            }

            @Override
            public boolean isDone() {
                return f.isDone();
            }

            @Override
            public Object get() throws InterruptedException, ExecutionException {
                GroovityStatistics.startExecution("http(async)");
                try {
                    return f.get();
                } finally {
                    GroovityStatistics.endExecution();
                }
            }

            @Override
            public Object get(long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException {
                GroovityStatistics.startExecution("http(async)");
                try {
                    return f.get(timeout, unit);
                } finally {
                    GroovityStatistics.endExecution();
                }
            }
        };
    } else {
        // return the parsed/handled response object
        GroovityStatistics.startExecution("http(sync)");
        try {
            responseVar = requester.call();
        } finally {
            GroovityStatistics.endExecution();
        }
    }
    if (varName != null) {
        bind(context, varName, responseVar);
    }
    return responseVar;
}

Example 7 with ScriptHelper

use of com.disney.groovity.util.ScriptHelper in project groovity by disney.

the class Accept method tag.

@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
public Object tag(Map attributes, Closure body) throws Exception {
    // channel may be null, which will create an anonymous channel that can only be offered to via reference
    Object channel = resolve(attributes, "channel");
    Policy policy = Policy.block;
    String policyStr = resolve(attributes, "policy", String.class);
    if (policyStr != null) {
        policy = Policy.valueOf(policyStr);
    }
    int qSize = -1;
    Object qDef = resolve(attributes, "q");
    if (qDef != null) {
        if (qDef instanceof Number) {
            qSize = ((Number) qDef).intValue();
        } else {
            qSize = Integer.valueOf(qDef.toString());
        }
    }
    Closure completed = resolve(attributes, "completed", Closure.class);
    final ScriptHelper scriptHelper = getScriptHelper(body);
    final Binding binding = scriptHelper.getBinding();
    final Map variables = binding.getVariables();
    final Map asyncVariables = Async.asyncCopy(variables);
    final AwaitContext asyncContext = AwaitContext.get(variables);
    final CharArrayWriter out = new CharArrayWriter();
    asyncVariables.put(OUT, out);
    if (asyncContext != null) {
        // signal a boundary for sequencing async output
        asyncContext.signalAsync(variables, out);
    }
    Binding asyncBinding = new Binding(asyncVariables);
    Object owner;
    if (body.getThisObject() instanceof Class) {
        // if the parent script is not available it is a special case (static) and we may share the context
        owner = body.getOwner();
    } else {
        // in normal contexts create a safe copy of the script
        Binding oldThreadBinding = ScriptHelper.THREAD_BINDING.get();
        ScriptHelper.THREAD_BINDING.set(asyncBinding);
        try {
            owner = scriptHelper.load(scriptHelper.getClassLoader().getScriptName());
        } finally {
            if (oldThreadBinding == null) {
                ScriptHelper.THREAD_BINDING.remove();
            } else {
                ScriptHelper.THREAD_BINDING.set(oldThreadBinding);
            }
        }
    }
    AsyncChannel asyncChan = AsyncChannel.open(sharedThreadPool, channel, qSize, policy, body, completed, owner, asyncBinding);
    String var = resolve(attributes, "var", String.class);
    if (var != null && var.length() > 0) {
        bind(body, var, asyncChan);
    }
    if (asyncContext != null) {
        asyncContext.add(asyncChan.getFuture());
    }
    return asyncChan;
}

Example 8 with ScriptHelper

use of com.disney.groovity.util.ScriptHelper in project groovity by disney.

the class Await method tag.

@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
public Object tag(final Map attributes, final Closure body) throws Exception {
    final Integer timeoutSeconds = resolve(attributes, TIMEOUT, Integer.class);
    final ScriptHelper scriptHelper = getScriptHelper(body);
    final Binding binding = scriptHelper.getBinding();
    final Map variables = binding.getVariables();
    final AwaitContext awaitContext = AwaitContext.create(variables);
    DeadlockFreeExecutor createdThreadPool = null;
    DeadlockFreeExecutor oldThreadPool = null;
    if (!variables.containsKey(Async.EXECUTOR_BINDING)) {
        Integer numThreads = resolve(attributes, POOL, Integer.class);
        if (numThreads != null) {
            createdThreadPool = new DeadlockFreeExecutor(interruptFactory, numThreads);
            oldThreadPool = (DeadlockFreeExecutor) variables.put(Async.EXECUTOR_BINDING, createdThreadPool);
        }
    }
    final Writer origOut = (Writer) variables.get(OUT);
    try {
        Collection<Object> resultsList;
        final long timeoutTime = timeoutSeconds == null ? -1 : System.currentTimeMillis() + (timeoutSeconds * 1000);
        Throwable error = null;
        try {
            body.call();
        } catch (Throwable e) {
            error = e;
        }
        ArrayDeque<Future> futuresList = awaitContext.getFutures();
        resultsList = new ArrayList<>(futuresList.size());
        for (Future f : futuresList) {
            if (error != null) {
                f.cancel(true);
                continue;
            }
            // flush any pending writers before waiting
            Optional<CharArrayWriter> ocw;
            while ((ocw = awaitContext.nextFragmentWriter()).isPresent()) {
                CharArrayWriter cw = ocw.get();
                if (cw.size() > 0 && origOut != null) {
                    cw.writeTo(origOut);
                }
            }
            if (timeoutTime == -1 || f.isDone()) {
                try {
                    resultsList.add(f.get());
                } catch (Throwable e) {
                    error = e;
                }
            } else {
                long timeoutDelta = timeoutTime - System.currentTimeMillis();
                if (timeoutDelta <= 0) {
                    error = new InterruptedException("Await reached timeout of " + timeoutSeconds);
                    f.cancel(true);
                } else {
                    try {
                        resultsList.add(f.get(timeoutDelta, TimeUnit.MILLISECONDS));
                    } catch (Throwable e) {
                        error = e;
                    }
                }
            }
            if (error == null) {
                // flush async buffer
                CharArrayWriter cw = awaitContext.nextFragmentWriter().get();
                if (cw.size() > 0 && origOut != null) {
                    cw.writeTo(origOut);
                }
            }
        }
        if (error != null) {
            if (error instanceof Exception) {
                throw (Exception) error;
            }
            throw new ExecutionException(error);
        }
        if (origOut != null) {
            final Object finalOut = variables.get(OUT);
            if (finalOut != origOut) {
                final CharArrayWriter cfo = ((CharArrayWriter) finalOut);
                try {
                    if (cfo.size() > 0) {
                        cfo.writeTo(origOut);
                    }
                } finally {
                    cfo.close();
                }
            }
        }
        final String var = resolve(attributes, VAR, String.class);
        if (var != null && var.length() > 0) {
            variables.put(var, resultsList);
        }
        return resultsList;
    } finally {
        awaitContext.close(variables);
        if (origOut != null) {
            variables.put(OUT, origOut);
        } else {
            variables.remove(OUT);
        }
        if (createdThreadPool != null) {
            createdThreadPool.shutdown();
            try {
                if (!createdThreadPool.awaitTermination(60, TimeUnit.SECONDS)) {
                    createdThreadPool.shutdownNow();
                    createdThreadPool.awaitTermination(60, TimeUnit.SECONDS);
                }
            } catch (InterruptedException e) {
                createdThreadPool.shutdownNow();
            }
            if (oldThreadPool != null) {
                variables.put(Async.EXECUTOR_BINDING, oldThreadPool);
            } else {
                variables.remove(Async.EXECUTOR_BINDING);
            }
        }
    }
}