Java tutorial
/* ************************************************************************ # # DivConq # # http://divconq.com/ # # Copyright: # Copyright 2014 eTimeline, LLC. All rights reserved. # # License: # See the license.txt file in the project's top-level directory for details. # # Authors: # * Andy White # ************************************************************************ */ package divconq.test; import groovy.lang.GroovyClassLoader; import groovy.lang.GroovyObject; import io.netty.buffer.ByteBuf; import io.netty.buffer.Unpooled; import java.io.File; import java.io.FileReader; import java.io.IOException; import java.io.InputStream; import java.io.PrintStream; import java.lang.reflect.Method; import java.net.HttpURLConnection; import java.net.URL; import java.nio.ByteBuffer; import java.nio.channels.AsynchronousFileChannel; import java.nio.channels.CompletionHandler; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import java.util.concurrent.CountDownLatch; import javax.script.Invocable; import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; import org.joda.time.DateTime; import divconq.filestore.CommonPath; import divconq.io.OutputWrapper; import divconq.lang.Memory; import divconq.lang.chars.Utf8Decoder; import divconq.lang.chars.Utf8Encoder; import divconq.lang.op.FuncResult; import divconq.lang.op.OperationContext; import divconq.lang.op.OperationObserver; import divconq.service.plugin.Operation; import divconq.struct.CompositeParser; import divconq.struct.CompositeStruct; import divconq.struct.FieldStruct; import divconq.struct.ListStruct; import divconq.struct.RecordStruct; import divconq.struct.builder.JsonMemoryBuilder; import divconq.struct.builder.YamlStreamBuilder; import divconq.struct.serial.CompositeToBufferBuilder; import divconq.util.HexUtil; import divconq.work.TaskRun; import static divconq.struct.StructUtil.*; public class TestYaml { public static void main(String[] args) throws Exception { } public static void maincp(String[] args) { CommonPath p = new CommonPath("/hi.txt"); System.out.println("1: " + p); p = new CommonPath("/lie/hi.txt"); System.out.println("2: " + p); //p = new CommonPath("/lie/./hi.txt"); //System.out.println("3: " + p); p = new CommonPath("/lie/../hi.txt"); System.out.println("4: " + p); } /* public static void main4(String[] args) { ExecutorService pool = Executors.newSingleThreadExecutor(); ResourceLeakDetector.setLevel(Level.PARANOID); Logger.init(null); FileSystemDriver localfs = new FileSystemDriver(); localfs.setRootFolder("C:/"); FileCollection files = new FileCollection(); files.add(localfs.getReference("/Users/andy/Documents/writing/buck2/story.xml")); files.add(localfs.getReference("/GreasySpoon/conf/mime.types")); FileSourceStream src = new FileSourceStream(pool, files); TarStream tar = new TarStream(); GzipStream gz = new GzipStream(); FileDestStream dest = new FileDestStream(localfs.getReference("/temp/test/files.tar.gz")); tar.setUpstream(src); gz.setUpstream(tar); dest.setUpstream(gz); dest.execute(new OperationCallback() { @Override public void callback() { System.out.println("Done"); } }); try (Scanner scan = new Scanner(System.in)) { System.out.println("Press enter to close"); scan.nextLine(); } Logger.stop(new OperationResult()); pool.shutdown(); } */ public static void main3(String[] args) { // create records, fields and lists easily RecordStruct rec = record(field("Name", "Fred"), field("Age", 49), field("FavoriteFoods", list("pizza", "cereal", "lima beans"))); // output as JSON rec.toString(); // output as formatted JSON rec.toPrettyString(); // validate the structure follows the schema rec.validate("dcTestPeopleExample"); } public static void main2(String[] args) { FuncResult<CompositeStruct> jres = CompositeParser.parseJson( "{ one: 'has', two: \"is\", three: [ 12, 44, 88 ], four: 12.55, five: false, six: null }"); if (jres.hasErrors()) System.out.println("Error: " + jres.getMessage()); else { RecordStruct out = (RecordStruct) jres.getResult(); System.out.println("= " + out.toPrettyString()); System.out.println("a: " + out.getFieldAsDecimal("four")); System.out.println("b: " + out.getFieldAsString("two")); System.out.println("c: " + out.getFieldAsBoolean("five")); System.out.println("d: " + out.getFieldAsList("three").getItemAsInteger(2)); } } public static void mainGroovService(String[] args) throws Exception { System.out.println("dude!"); RecordStruct rec = new RecordStruct(new FieldStruct("Age", 15)); GroovyClassLoader loader = new GroovyClassLoader(); Class<?> groovyClass = loader.parseClass(new File("./packages/dcTest/services/FirstGroovy.groovy")); for (Method m : groovyClass.getMethods()) { Operation ann = m.getAnnotation(Operation.class); // to be a service operation you need to have an annotation and name starts with "handle" if ((ann == null) || !m.getName().startsWith("handle")) continue; System.out.println( "Service handler: " + m.getName().substring(6) + " request type: " + ann.request().type()); } /* // let's call some method on an instance GroovyObject groovyObject = (GroovyObject) groovyClass.newInstance(); Object[] args2 = { rec }; //for (MetaMethod m : groovyObject.getMetaClass().getMethods()) { // System.out.println("M1: " + m.getName()); // System.out.println("M3: " + m.getSignature()); // System.out.println("M3: " + m.getDescriptor()); //} @SuppressWarnings("unchecked") Closure<Object> res = (Closure<Object>)groovyObject.invokeMethod("printIt", args2); res.call(); */ TaskRun run = new TaskRun(); run.getTask().withObserver(new OperationObserver() { @Override public void completed(OperationContext or) { System.out.println("Result of run: " + or.getTaskRun().getResult()); } }); GroovyObject groovyObject = (GroovyObject) groovyClass.newInstance(); Object[] args2 = { run, "tee shirt" }; groovyObject.invokeMethod("handleEcho", args2); System.out.println("after: " + rec.getFieldAsInteger("Age")); Thread.sleep(5000); loader.close(); } public static void mainJS(String[] args) throws Exception { ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn"); engine.eval(new FileReader("./packages/dcTest/scripts/hello1.js")); Invocable invocable = (Invocable) engine; RecordStruct rec = new RecordStruct(new FieldStruct("Age", 15)); Object result = invocable.invokeFunction("fun1", "Peter Parker", rec); System.out.println(result); //System.out.println(result.getClass()); System.out.println("after: " + rec.getFieldAsInteger("Age")); Thread.sleep(5000); System.out.println("after: " + rec.getFieldAsInteger("Age")); } static public Memory getRemote(String url) { try { Memory res = new Memory(); URL obj = new URL(url); HttpURLConnection con = (HttpURLConnection) obj.openConnection(); // optional default is GET con.setRequestMethod("GET"); //add request header con.setRequestProperty("User-Agent", "Mozilla/5.0"); //System.out.println("\nSending 'GET' request to URL : " + url); int responseCode = con.getResponseCode(); //System.out.println("Response Code : " + responseCode); if (responseCode != 200) return null; InputStream is = con.getInputStream(); res.copyFromStream(is); is.close(); return res; } catch (Exception x) { System.out.println("Error reading url: " + url + " - " + x); } return null; } static public void realmain() { /* TODO try { CharBuffer cb = CharBuffer.allocate(1024); InputStreamReader sr = new InputStreamReader(System.in, "UTF-8"); sr.read(cb); String u = "00"; cb.flip(); System.out.println("= " + cb.equals(u)); } catch (Exception x) { System.out.println("Error: " + x); } */ String u = "av73Dw??gT80Hgt"; System.out.println(u); byte[] xb = Utf8Encoder.encode(u); System.out.println(HexUtil.bufferToHex(xb)); // 6176c3a4373344773f3f67543830486774 System.exit(0); CommonPath ptest = new CommonPath("jump/and/stomp"); System.out.println("1: " + ptest.getFileName()); System.out.println("2: " + ptest.getName(0)); System.out.println("3: " + ptest.getName(1)); System.out.println("4: " + ptest.getName(2)); System.out.println("5: " + ptest.getParent()); System.out.println("6: " + ptest.subpath(0, 1)); ptest = new CommonPath("jump"); System.out.println("1: " + ptest.getFileName()); System.out.println("2: " + ptest.getName(0)); System.out.println("5: " + ptest.getParent()); System.out.println("6: " + ptest.subpath(0, 1)); ptest = new CommonPath("/jump"); System.out.println("1: " + ptest.getFileName()); System.out.println("2: " + ptest.getName(0)); System.out.println("5: " + ptest.getParent()); System.out.println("6: " + ptest.subpath(0, 1)); ptest = new CommonPath("/jump/and/stomp"); System.out.println("1: " + ptest.getFileName()); System.out.println("2: " + ptest.getName(0)); System.out.println("3: " + ptest.getName(1)); System.out.println("4: " + ptest.getName(2)); System.out.println("5: " + ptest.getParent()); System.out.println("6: " + ptest.subpath(0, 1)); System.exit(0); Path file = Paths.get("..", "lib", "aws-java-sdk-1.3.21.1.jar"); if (!Files.exists(file)) { System.out.println("File not found: " + file); return; } if (!Files.isRegularFile(file)) { System.out.println("Not a file: " + file); return; } System.out.println("file good"); final CountDownLatch latch = new CountDownLatch(1); try { AsynchronousFileChannel sbc = AsynchronousFileChannel.open(file); final ByteBuffer buf = ByteBuffer.allocate(64 * 1024); sbc.read(buf, 0, sbc, new CompletionHandler<Integer, AsynchronousFileChannel>() { long pos = 0; @Override public void completed(Integer result, AsynchronousFileChannel sbc) { if (result == -1) { try { sbc.close(); } catch (IOException x) { } latch.countDown(); return; } if (result > 0) { this.pos += result; //ctx.writeAndFlush(new StreamMessage(buf)); System.out.println("get: " + buf.position()); buf.clear(); } sbc.read(buf, this.pos, sbc, this); } @Override public void failed(Throwable x, AsynchronousFileChannel sbc) { // TODO logging System.out.println("error: " + x); try { sbc.close(); } catch (IOException x2) { } latch.countDown(); } }); } catch (IOException x) { System.out.println("Server Stream failed to open file: " + x); } try { latch.await(); } catch (Exception x) { } //TestYaml.testSerial(); } public static void testSerial() { ByteBuf bb = Unpooled.buffer(); CompositeToBufferBuilder sb = new CompositeToBufferBuilder(bb); try { /* sb.startList(); sb.startList(); sb.value("a"); //sb.value(null); //sb.value("b"); sb.endList(); sb.value("c"); sb.startList(); sb.value(null); sb.endList(); sb.endList(); */ sb.startList(); sb.startList(); sb.startList(); sb.value("a"); sb.value("b"); sb.endList(); sb.value(null); sb.value(22); sb.value(2.2); sb.startList(); sb.value(2.2); sb.value(null); sb.value(22); sb.endList(); sb.endList(); sb.startRecord(); sb.field("Name", "ted"); sb.field("Age", 7); sb.field("DOB", new DateTime(1998, 8, 3, 17, 12)); sb.field("Sex", "m"); sb.field("Software"); sb.startList(); sb.value("Afterstep <& or \""); sb.value( "CTWM this is an abcdefghijklmnopqrstuvwxy is an abcdefghijklmnopqrstuvwxy is /> an abcdefghijklmnopqrstuvwxy is \nan abcdefghijklmnopqrstuvwxy is \tan abcdefghijklmnopqrstuvwxy"); sb.value("Oroborus"); sb.endList(); sb.field("Friends"); sb.startList(); sb.startRecord(); sb.field("Name", "macy"); sb.field("Age", 6); sb.field("Sex", "f"); sb.endRecord(); sb.startRecord(); sb.field("Name", "rich"); sb.field("Age", 7); sb.field("Sex", "m"); sb.field("Foods"); sb.startList(); sb.value("Apple"); sb.value("Cookie"); sb.endList(); sb.endRecord(); sb.endList(); sb.endRecord(); sb.startRecord(); sb.field("Name", "kathy"); sb.field("Father"); sb.startRecord(); sb.field("Name", "Ted"); sb.field("Age", 29); sb.endRecord(); sb.field("Age"); sb.field("DOB", new DateTime(1994, 3, 13, 8, 55)); sb.field("Sex", "f"); sb.endRecord(); sb.endList(); } catch (Exception x) { System.out.println("builder error: " + sb); } System.out.println("built:\n" + Utf8Decoder.decode(bb)); ListStruct list = (ListStruct) sb.toLocal(); System.out.println(); System.out.println("item 2 name: " + list.getItemAsRecord(1).getFieldAsString("Name")); //System.out.println("item 2: " + list.getItem(1)); System.out.println(); System.out.println(list.toPrettyString()); System.exit(0); } public static void testJson() { JsonMemoryBuilder sb = new JsonMemoryBuilder(true); try { sb.startList(); sb.startList(); sb.startList(); sb.value("a"); sb.value("b"); sb.endList(); sb.value(null); sb.value(22); sb.value(2.2); sb.startList(); sb.value(2.2); sb.value(null); sb.value(22); sb.endList(); sb.endList(); sb.startRecord(); sb.field("Name", "ted"); sb.field("Age", 7); sb.field("DOB", new DateTime(1998, 8, 3, 17, 12)); sb.field("Sex", "m"); sb.field("Software"); sb.startList(); sb.value("Afterstep <& or \""); sb.value( "CTWM this is an abcdefghijklmnopqrstuvwxy is an abcdefghijklmnopqrstuvwxy is /> an abcdefghijklmnopqrstuvwxy is \nan abcdefghijklmnopqrstuvwxy is \tan abcdefghijklmnopqrstuvwxy"); sb.value("Oroborus"); sb.endList(); sb.field("Friends"); sb.startList(); sb.startRecord(); sb.field("Name", "macy"); sb.field("Age", 6); sb.field("Sex", "f"); sb.endRecord(); sb.startRecord(); sb.field("Name", "rich"); sb.field("Age", 7); sb.field("Sex", "m"); sb.field("Foods"); sb.startList(); sb.value("Apple"); sb.value("Cookie"); sb.endList(); sb.endRecord(); sb.endList(); sb.endRecord(); sb.startRecord(); sb.field("Name", "kathy"); sb.field("Father"); sb.startRecord(); sb.field("Name", "Ted"); sb.field("Age", 29); sb.endRecord(); sb.field("Age"); sb.field("DOB", new DateTime(1994, 3, 13, 8, 55)); sb.field("Sex", "f"); sb.endRecord(); sb.endList(); } catch (Exception x) { System.out.println("builder error: " + sb); } System.out.println("built:\n" + sb.getMemory()); ListStruct list = (ListStruct) sb.toLocal(); System.out.println(); System.out.println("item 2 name: " + list.getItemAsRecord(1).getFieldAsString("Name")); System.out.println(); System.out.println(list.toString()); System.exit(0); } public static void testYaml() { Memory ydest = new Memory(); OutputWrapper os = new OutputWrapper(ydest); YamlStreamBuilder sb = new YamlStreamBuilder(new PrintStream(os)); try { sb.startList(); sb.startList(); sb.startList(); sb.value("a"); sb.value("b"); sb.endList(); sb.value(null); sb.value(22); sb.value(2.2); sb.startList(); sb.value(2.2); sb.value(null); sb.value(22); sb.endList(); sb.endList(); sb.startRecord(); sb.field("Name", "ted"); sb.field("Age", 7); sb.field("DOB", new DateTime(1998, 8, 3, 17, 12)); sb.field("Sex", "m"); sb.field("Software"); sb.startList(); sb.value("Afterstep <& or \""); sb.value( "CTWM this is an abcdefghijklmnopqrstuvwxy is an abcdefghijklmnopqrstuvwxy is /> an abcdefghijklmnopqrstuvwxy is \nan abcdefghijklmnopqrstuvwxy is \tan abcdefghijklmnopqrstuvwxy"); sb.value("Oroborus"); sb.endList(); sb.field("Friends"); sb.startList(); sb.startRecord(); sb.field("Name", "macy"); sb.field("Age", 6); sb.field("Sex", "f"); sb.endRecord(); sb.startRecord(); sb.field("Name", "rich"); sb.field("Age", 7); sb.field("Sex", "m"); sb.field("Foods"); sb.startList(); sb.value("Apple"); sb.value("Cookie"); sb.endList(); sb.endRecord(); sb.endList(); sb.endRecord(); sb.startRecord(); sb.field("Name", "kathy"); sb.field("Father"); sb.startRecord(); sb.field("Name", "Ted"); sb.field("Age", 29); sb.endRecord(); sb.field("Age"); sb.field("DOB", new DateTime(1994, 3, 13, 8, 55)); sb.field("Sex", "f"); sb.endRecord(); sb.endList(); } catch (Exception x) { System.out.println("builder error: " + sb); } System.out.println("built:\n" + ydest); //String yaml = "---\nboolean: !!bool \"true\"\ninteger: !!int \"3\"\nfloat: !!float \"3.14\"\nnull: !!null\nstr: !!str \"abc\"\n" // + "---\n- Afterstep\n- CTWM\n- Oroborus"; //String yaml = "datetime: !!timestamp 2009-12-09T08:35:45.000Z\nboolean: !!bool \"true\"\ninteger: !!int \"3\"\nfloat: !!float \"3.14\"\nnull: !!null\nstr: !!str \"abc\"\n"; ydest.setPosition(0); System.out.println(); //System.out.println(CompositeParser.parseYaml(ydest).toString()); System.exit(0); } }