From 3991a22e0a6b827cfeef7f34dc5d96e0b7ece487 Mon Sep 17 00:00:00 2001 From: erickson Date: Thu, 10 May 2007 20:59:27 +0000 Subject: [PATCH 1/1] adding more base objects, started on stack layer. added config parser git-svn-id: svn://svn.open-ils.org/OpenSRF/trunk@883 9efc2488-bf62-4759-914b-345cdb29e865 --- src/java/org/opensrf/ClientSession.java | 40 ++++++++ src/java/org/opensrf/Request.java | 32 +++++++ src/java/org/opensrf/ServerSession.java | 8 ++ src/java/org/opensrf/Session.java | 13 ++- src/java/org/opensrf/Stack.java | 60 ++++++++++++ src/java/org/opensrf/test/TestConfig.java | 16 ++++ src/java/org/opensrf/util/Config.java | 93 +++++++++++++++++++ .../org/opensrf/util/ConfigException.java | 11 +++ src/java/org/opensrf/util/JSONException.java | 6 ++ src/java/org/opensrf/util/Utils.java | 20 ++++ 10 files changed, 298 insertions(+), 1 deletion(-) create mode 100644 src/java/org/opensrf/ClientSession.java create mode 100644 src/java/org/opensrf/Request.java create mode 100644 src/java/org/opensrf/ServerSession.java create mode 100644 src/java/org/opensrf/Stack.java create mode 100644 src/java/org/opensrf/test/TestConfig.java create mode 100644 src/java/org/opensrf/util/Config.java create mode 100644 src/java/org/opensrf/util/ConfigException.java create mode 100644 src/java/org/opensrf/util/JSONException.java diff --git a/src/java/org/opensrf/ClientSession.java b/src/java/org/opensrf/ClientSession.java new file mode 100644 index 0000000..9f3483e --- /dev/null +++ b/src/java/org/opensrf/ClientSession.java @@ -0,0 +1,40 @@ +package org.opensrf; +import java.util.Date; +import java.util.List; +import java.util.ArrayList; +import java.util.Random; + +import org.opensrf.util.*; + + +/** + * Models an OpenSRF client session. + */ +public class ClientSession extends Session { + + /** The remote service to communicate with */ + private String service; + private String domain; + private String router; + private String origRemoteNode; + private int nextId; + private List requests; + + /** + * @param service The remove service to communicate with + */ + public ClientSession(String service) throws ConfigException { + this.service = service; + domain = (String) Config.getFirst("/domain/domains"); + router = (String) Config.getString("/router_name"); + setRemoteNode(router + "@" + domain + "/" + service); + origRemoteNode = getRemoteNode(); + requests = new ArrayList(); + nextId = 0; + long time = new Date().getTime(); + Random rand = new Random(time); + thread = rand.nextInt()+""+rand.nextInt()+""+time; + cacheSession(); + } +} + diff --git a/src/java/org/opensrf/Request.java b/src/java/org/opensrf/Request.java new file mode 100644 index 0000000..b646950 --- /dev/null +++ b/src/java/org/opensrf/Request.java @@ -0,0 +1,32 @@ +package org.opensrf; +import java.util.Queue; +import java.util.concurrent.ConcurrentLinkedQueue; +import java.util.List; +import org.opensrf.net.xmpp.XMPPException; + +public class Request { + + private ClientSession session; + private Method method; + private int id; + private Queue resultQueue; + private boolean resetTimeout; + private boolean complete; + + public Request(ClientSession ses, int id, Method method) { + this.session = ses; + this.id = id; + this.method = method; + resultQueue = new ConcurrentLinkedQueue(); + complete = false; + resetTimeout = false; + } + + public Request(ClientSession ses, int id, String methodName, List params) { + this(ses, id, new Method(methodName, params)); + } + + public void send() throws XMPPException { + session.send(new Message(id, Message.Type.REQUEST, method)); + } +} diff --git a/src/java/org/opensrf/ServerSession.java b/src/java/org/opensrf/ServerSession.java new file mode 100644 index 0000000..62e5133 --- /dev/null +++ b/src/java/org/opensrf/ServerSession.java @@ -0,0 +1,8 @@ +package org.opensrf; + +/** + * Models an OpenSRF server session. + */ +public class ServerSession extends Session { +} + diff --git a/src/java/org/opensrf/Session.java b/src/java/org/opensrf/Session.java index fca03fa..2eb9aa9 100644 --- a/src/java/org/opensrf/Session.java +++ b/src/java/org/opensrf/Session.java @@ -28,7 +28,7 @@ public abstract class Session { * In other words, each session has a unique thread, and all messages * in that session will carry this thread around as an indicator. */ - private String thread; + protected String thread; public Session() { connectState = ConnectState.DISCONNECTED; @@ -83,4 +83,15 @@ public abstract class Session { public static Session findCachedSession(String thread) { return sessionCache.get(thread); } + + protected void cacheSession() { + sessionCache.put(thread, this); + } + + public void setRemoteNode(String nodeName) { + remoteNode = nodeName; + } + public String getRemoteNode() { + return remoteNode; + } } diff --git a/src/java/org/opensrf/Stack.java b/src/java/org/opensrf/Stack.java new file mode 100644 index 0000000..8ee753d --- /dev/null +++ b/src/java/org/opensrf/Stack.java @@ -0,0 +1,60 @@ +package org.opensrf; +import org.opensrf.net.xmpp.XMPPMessage; +import org.opensrf.util.*; +import java.util.Date; +import java.util.List; +import java.util.Iterator; + + +public class Stack { + + public static void processXMPPMessage(XMPPMessage msg) { + + Session ses = Session.findCachedSession(msg.getThread()); + + if(ses == null) { + /** inbound client request, create a new server session */ + return; + } + + /** parse the JSON message body, which should result in a list of OpenSRF messages */ + List msgList; + + try { + msgList = new JSONReader(msg.getBody()).readArray(); + } catch(JSONException e) { + /** XXX LOG error */ + return; + } + + Iterator itr = msgList.iterator(); + + OSRFObject obj = null; + long start = new Date().getTime(); + + while(itr.hasNext()) { + /** Construct a Message object from the generic OSRFObject returned from parsing */ + obj = (OSRFObject) itr.next(); + processOSRFMessage(ses, + new Message( + ((Integer) obj.get("threadTrace")).intValue(), + (Message.Type) obj.get("type"), + obj.get("payload"))); + } + + /** LOG the duration */ + } + + public static void processOSRFMessage(Session ses, Message msg) { + if( ses instanceof ClientSession ) + processServerResponse((ClientSession) ses, msg); + else + processClientRequest((ServerSession) ses, msg); + } + + public static void processServerResponse(ClientSession session, Message msg) { + } + + public static void processClientRequest(ServerSession session, Message msg) { + } +} diff --git a/src/java/org/opensrf/test/TestConfig.java b/src/java/org/opensrf/test/TestConfig.java new file mode 100644 index 0000000..5cd4eb3 --- /dev/null +++ b/src/java/org/opensrf/test/TestConfig.java @@ -0,0 +1,16 @@ +package org.opensrf.test; +import org.opensrf.*; +import org.opensrf.util.*; + +public class TestConfig { + public static void main(String args[]) throws Exception { + Config config = new Config(""); + config.parse(args[0]); + Config.setConfig(config); + System.out.println(config); + System.out.println(""); + + for(int i = 1; i < args.length; i++) + System.out.println("Found config value: " + args[i] + ": " + Config.get(args[i])); + } +} diff --git a/src/java/org/opensrf/util/Config.java b/src/java/org/opensrf/util/Config.java new file mode 100644 index 0000000..6f430c4 --- /dev/null +++ b/src/java/org/opensrf/util/Config.java @@ -0,0 +1,93 @@ +package org.opensrf.util; + +import org.json.*; +import java.util.Map; +import java.util.List; + + +/** + * Config reader and accesor module. This module reads an XML config file, + * then loads the file into an internal config, whose values may be accessed + * by xpath-style lookup paths. + */ +public class Config { + + /** The globl config instance */ + private static Config config; + /** The object form of the parsed config */ + private Map configObject; + private String context; + + public Config(String context) { + this.context = context; + } + + /** + * Sets the global config object. + * @param c The config object to use. + */ + public static void setConfig(Config c) { + config = c; + } + + /** + * Parses an XML config file. + * @param filename The path to the file to parse. + */ + public void parse(String filename) throws Exception { + String xml = Utils.fileToString(filename); + JSONObject jobj = XML.toJSONObject(xml); + configObject = (Map) new JSONReader(jobj.toString()).readObject(); + } + + /** + * Returns the configuration value found at the requested path. + * @see org.opensrf.util.Utils.findPath for path description. + * @param path The search path + * @return The config value, or null if no value exists at the given path. + * @throws ConfigException thrown if nothing is found at the path + */ + public static String getString(String path) throws ConfigException { + try { + return (String) get(path); + } catch(Exception e) { + throw new + ConfigException("No config string found at " + path); + } + } + + /** + * Returns the configuration object found at the requested path. + * @see org.opensrf.util.Utils.findPath for path description. + * @param path The search path + * @return The config value + * @throws ConfigException thrown if nothing is found at the path + */ + public static Object get(String path) throws ConfigException { + try { + Object obj = Utils.findPath(config.configObject, config.context + path); + if(obj == null) + throw new ConfigException(""); + return obj; + } catch(Exception e) { + e.printStackTrace(); + throw new ConfigException("No config object found at " + path); + } + } + + public static Object getFirst(String path) throws ConfigException { + Object obj = get(path); + if(obj instanceof List) + return ((List) obj).get(0); + return obj; + } + + + /** + * Returns the config as a JSON string + */ + public String toString() { + return new JSONWriter(configObject).write(); + } +} + diff --git a/src/java/org/opensrf/util/ConfigException.java b/src/java/org/opensrf/util/ConfigException.java new file mode 100644 index 0000000..be7c0cf --- /dev/null +++ b/src/java/org/opensrf/util/ConfigException.java @@ -0,0 +1,11 @@ +package org.opensrf.util; + +/** + * Thrown by the Config module when a user requests a configuration + * item that does not exist + */ +public class ConfigException extends Exception { + public ConfigException(String info) { + super(info); + } +} diff --git a/src/java/org/opensrf/util/JSONException.java b/src/java/org/opensrf/util/JSONException.java new file mode 100644 index 0000000..69a5c20 --- /dev/null +++ b/src/java/org/opensrf/util/JSONException.java @@ -0,0 +1,6 @@ +package org.opensrf.util; +public class JSONException extends Exception { + public JSONException(String s) { + super(s); + } +} diff --git a/src/java/org/opensrf/util/Utils.java b/src/java/org/opensrf/util/Utils.java index 60c476f..9bf819f 100644 --- a/src/java/org/opensrf/util/Utils.java +++ b/src/java/org/opensrf/util/Utils.java @@ -80,6 +80,26 @@ public class Utils { } } } + + + /** + * Descends into the map along the given XPATH-style path + * and returns the object found there. + * @param path The XPATH-style path to search. Path + * components are separated by '/' characters. + * Example: /opensrf/loglevel + * @return The found object. + */ + + public static Object findPath(Map map, String path) { + String keys[] = path.split("/", -1); + int i = 0; + if(path.charAt(0) == '/') i++; + for(; i < keys.length - 1; i++ ) + map = (Map) map.get(keys[i]); + + return map.get(keys[i]); + } } -- 2.43.2