Examples of org.apache.airavata.gfac.core.handler.GFacHandler

Package org.apache.airavata.gfac.core.handler

Examples of org.apache.airavata.gfac.core.handler.GFacHandler

org.apache.airavata.gfac.core.handler.GFacHandler
This is the handler interface in gfac, most of the tasks which can be decoupled from each other can be implemented as a Handler. After implementing these can be registered in gfac-config.xml and those will get invoked by the framework.


    private void invokeInFlowHandlers(JobExecutionContext jobExecutionContext) throws GFacException {
        List<GFacHandlerConfig> handlers = jobExecutionContext.getGFacConfiguration().getInHandlers();
        for (GFacHandlerConfig handlerClassName : handlers) {
            Class<? extends GFacHandler> handlerClass;
            GFacHandler handler;
            try {
                handlerClass = Class.forName(handlerClassName.getClassName().trim()).asSubclass(GFacHandler.class);
                handler = handlerClass.newInstance();
                handler.initProperties(handlerClassName.getProperties());
            } catch (ClassNotFoundException e) {
                throw new GFacException("Cannot load handler class " + handlerClassName, e);
            } catch (InstantiationException e) {
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            } catch (IllegalAccessException e) {
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            }
            try {
                handler.invoke(jobExecutionContext);
            } catch (GFacHandlerException e) {
                throw new GFacException("Error Executing a InFlow Handler", e.getCause());
            }
        }
    }

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            }
            schedule(jobExecutionContext);
        }
        for (GFacHandlerConfig handlerClassName : handlers) {
            Class<? extends GFacHandler> handlerClass;
            GFacHandler handler;
            try {
                handlerClass = Class.forName(handlerClassName.getClassName().trim()).asSubclass(GFacHandler.class);
                handler = handlerClass.newInstance();
                handler.initProperties(handlerClassName.getProperties());
            } catch (ClassNotFoundException e) {
                log.error(e.getMessage());
                throw new GFacException("Cannot load handler class " + handlerClassName, e);
            } catch (InstantiationException e) {
                log.error(e.getMessage());
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            } catch (IllegalAccessException e) {
                log.error(e.getMessage());
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            }
            try {
                handler.invoke(jobExecutionContext);
            } catch (Exception e) {
                // TODO: Better error reporting.
                throw new GFacException("Error Executing a OutFlow Handler", e);
            }
        }

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    public static void invokeOutFlowHandlers(JobExecutionContext jobExecutionContext) throws GFacException {
        List<GFacHandlerConfig> handlers = jobExecutionContext.getGFacConfiguration().getOutHandlers();


        for (GFacHandlerConfig handlerClassName : handlers) {
            Class<? extends GFacHandler> handlerClass;
            GFacHandler handler;
            try {
                handlerClass = Class.forName(handlerClassName.getClassName().trim()).asSubclass(GFacHandler.class);
                handler = handlerClass.newInstance();
                handler.initProperties(handlerClassName.getProperties());
            } catch (ClassNotFoundException e) {
                logger.error(e.getMessage());
                throw new GFacException("Cannot load handler class " + handlerClassName, e);
            } catch (InstantiationException e) {
                logger.error(e.getMessage());
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            } catch (IllegalAccessException e) {
                logger.error(e.getMessage());
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            }
            try {
                handler.invoke(jobExecutionContext);
            } catch (Exception e) {
                // TODO: Better error reporting.
                throw new GFacException("Error Executing a OutFlow Handler", e);
            }
        }

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        try {
            monitorPublisher.publish(new GfacExperimentStateChangeRequest(new MonitorID(jobExecutionContext)
                    , GfacExperimentState.INHANDLERSINVOKING));
            for (GFacHandlerConfig handlerClassName : handlers) {
                Class<? extends GFacHandler> handlerClass;
                GFacHandler handler;
                try {
                    GFacUtils.createPluginZnode(zk, jobExecutionContext, handlerClassName.getClassName());
                    handlerClass = Class.forName(handlerClassName.getClassName().trim()).asSubclass(GFacHandler.class);
                    handler = handlerClass.newInstance();
                    handler.initProperties(handlerClassName.getProperties());
                } catch (ClassNotFoundException e) {
                    throw new GFacException("Cannot load handler class " + handlerClassName, e);
                } catch (InstantiationException e) {
                    throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
                } catch (IllegalAccessException e) {
                    throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
                }
                try {
                    handler.invoke(jobExecutionContext);
                    GFacUtils.updatePluginState(zk, jobExecutionContext, handlerClassName.getClassName(), GfacPluginState.COMPLETED);
                    // if exception thrown before that we do not make it finished
                } catch (GFacHandlerException e) {
                    throw new GFacException("Error Executing a InFlow Handler", e.getCause());
                }

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            launch(jobExecutionContext);
        }
        monitorPublisher.publish(new GfacExperimentStateChangeRequest(new MonitorID(jobExecutionContext), GfacExperimentState.OUTHANDLERSINVOKING));
        for (GFacHandlerConfig handlerClassName : handlers) {
            Class<? extends GFacHandler> handlerClass;
            GFacHandler handler;
            try {
                GFacUtils.createPluginZnode(zk, jobExecutionContext, handlerClassName.getClassName());
                handlerClass = Class.forName(handlerClassName.getClassName().trim()).asSubclass(GFacHandler.class);
                handler = handlerClass.newInstance();
                handler.initProperties(handlerClassName.getProperties());
            } catch (ClassNotFoundException e) {
                log.error(e.getMessage());
                throw new GFacException("Cannot load handler class " + handlerClassName, e);
            } catch (InstantiationException e) {
                log.error(e.getMessage());
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            } catch (IllegalAccessException e) {
                log.error(e.getMessage());
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            } catch (Exception e) {
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            }
            try {
                handler.invoke(jobExecutionContext);
                GFacUtils.updatePluginState(zk, jobExecutionContext, handlerClassName.getClassName(), GfacPluginState.COMPLETED);
            } catch (Exception e) {
                // TODO: Better error reporting.
                throw new GFacException("Error Executing a OutFlow Handler", e);
            }

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        try {
            monitorPublisher.publish(new GfacExperimentStateChangeRequest(new MonitorID(jobExecutionContext)
                    , GfacExperimentState.INHANDLERSINVOKING));
            for (GFacHandlerConfig handlerClassName : handlers) {
                Class<? extends GFacHandler> handlerClass;
                GFacHandler handler;
                try {
                    handlerClass = Class.forName(handlerClassName.getClassName().trim()).asSubclass(GFacHandler.class);
                    handler = handlerClass.newInstance();
                    String plState = GFacUtils.getPluginState(zk, jobExecutionContext, handlerClassName.getClassName());
                    int state = 0;
                    try {
                        state = Integer.valueOf(plState);
                    } catch (NumberFormatException e) {


                    }
                    if (state >= GfacPluginState.INVOKED.getValue()) {
                        if (handler instanceof GFacRecoverableHandler) {
                            // if these already ran we re-run only recoverable handlers
                            log.info(handlerClassName.getClassName() + " is a recoverable handler so we recover the handler");
                            GFacUtils.createPluginZnode(zk, jobExecutionContext, handlerClassName.getClassName(), GfacPluginState.INVOKING);
                            ((GFacRecoverableHandler) handler).recover(jobExecutionContext);
                            GFacUtils.updatePluginState(zk, jobExecutionContext, handlerClassName.getClassName(), GfacPluginState.COMPLETED);
                        } else {
                            log.info(handlerClassName.getClassName() + " is not a recoverable handler so we do not run because it already ran in last-run");
                        }
                    } else {
                        log.info(handlerClassName.getClassName() + " never ran so we run this is normal mode");
                        GFacUtils.createPluginZnode(zk, jobExecutionContext, handlerClassName.getClassName(), GfacPluginState.INVOKING);
                        handler.initProperties(handlerClassName.getProperties());
                        handler.invoke(jobExecutionContext);
                        GFacUtils.updatePluginState(zk, jobExecutionContext, handlerClassName.getClassName(), GfacPluginState.COMPLETED);
                    }
                } catch (GFacHandlerException e) {
                    throw new GFacException("Error Executing a InFlow Handler", e.getCause());
                } catch (ClassNotFoundException e) {

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            launch(jobExecutionContext);
        }
        monitorPublisher.publish(new GfacExperimentStateChangeRequest(new MonitorID(jobExecutionContext), GfacExperimentState.OUTHANDLERSINVOKING));
        for (GFacHandlerConfig handlerClassName : handlers) {
            Class<? extends GFacHandler> handlerClass;
            GFacHandler handler;
            try {
                handlerClass = Class.forName(handlerClassName.getClassName().trim()).asSubclass(GFacHandler.class);
                handler = handlerClass.newInstance();
                String plState = GFacUtils.getPluginState(zk, jobExecutionContext, handlerClassName.getClassName());
                if (Integer.valueOf(plState) >= GfacPluginState.INVOKED.getValue()) {
                    if (handler instanceof GFacRecoverableHandler) {
                        // if these already ran we re-run only recoverable handlers
                        log.info(handlerClassName.getClassName() + " is a recoverable handler so we recover the handler");
                        GFacUtils.createPluginZnode(zk, jobExecutionContext, handlerClassName.getClassName(), GfacPluginState.INVOKING);
                        ((GFacRecoverableHandler) handler).recover(jobExecutionContext);
                        GFacUtils.updatePluginState(zk, jobExecutionContext, handlerClassName.getClassName(), GfacPluginState.COMPLETED);
                    } else {
                        log.info(handlerClassName.getClassName() + " is not a recoverable handler so we do not run because it already ran in last-run");
                    }
                } else {
                    log.info(handlerClassName.getClassName() + " never ran so we run this is normal mode");
                    GFacUtils.createPluginZnode(zk, jobExecutionContext, handlerClassName.getClassName(), GfacPluginState.INVOKING);
                    handler.initProperties(handlerClassName.getProperties());
                    handler.invoke(jobExecutionContext);
                    GFacUtils.updatePluginState(zk, jobExecutionContext, handlerClassName.getClassName(), GfacPluginState.COMPLETED);
                }
            } catch (ClassNotFoundException e) {
                log.error(e.getMessage());
                throw new GFacException("Cannot load handler class " + handlerClassName, e);

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    public static void invokeOutFlowHandlers(JobExecutionContext jobExecutionContext) throws GFacException {
        List<GFacHandlerConfig> handlers = jobExecutionContext.getGFacConfiguration().getOutHandlers();


        for (GFacHandlerConfig handlerClassName : handlers) {
            Class<? extends GFacHandler> handlerClass;
            GFacHandler handler;
            try {
                handlerClass = Class.forName(handlerClassName.getClassName().trim()).asSubclass(GFacHandler.class);
                handler = handlerClass.newInstance();
                handler.initProperties(handlerClassName.getProperties());
            } catch (ClassNotFoundException e) {
                logger.error(e.getMessage());
                throw new GFacException("Cannot load handler class " + handlerClassName, e);
            } catch (InstantiationException e) {
                logger.error(e.getMessage());
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            } catch (IllegalAccessException e) {
                logger.error(e.getMessage());
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            }
            try {
                handler.invoke(jobExecutionContext);
            } catch (Exception e) {
                // TODO: Better error reporting.
                throw new GFacException("Error Executing a OutFlow Handler", e);
            }
        }

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    private void invokeInFlowHandlers(JobExecutionContext jobExecutionContext) throws GFacException {
        List<GFacHandlerConfig> handlers = jobExecutionContext.getGFacConfiguration().getInHandlers();
        for (GFacHandlerConfig handlerClassName : handlers) {
            Class<? extends GFacHandler> handlerClass;
            GFacHandler handler;
            try {
                handlerClass = Class.forName(handlerClassName.getClassName().trim()).asSubclass(GFacHandler.class);
                handler = handlerClass.newInstance();
                handler.initProperties(handlerClassName.getProperties());
            } catch (ClassNotFoundException e) {
                throw new GFacException("Cannot load handler class " + handlerClassName, e);
            } catch (InstantiationException e) {
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            } catch (IllegalAccessException e) {
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            }
            try {
                handler.invoke(jobExecutionContext);
            } catch (GFacHandlerException e) {
                throw new GFacException("Error Executing a InFlow Handler", e.getCause());
            }
        }
    }

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            }
            schedule(jobExecutionContext);
        }
        for (GFacHandlerConfig handlerClassName : handlers) {
            Class<? extends GFacHandler> handlerClass;
            GFacHandler handler;
            try {
                handlerClass = Class.forName(handlerClassName.getClassName().trim()).asSubclass(GFacHandler.class);
                handler = handlerClass.newInstance();
                handler.initProperties(handlerClassName.getProperties());
            } catch (ClassNotFoundException e) {
                log.error(e.getMessage());
                throw new GFacException("Cannot load handler class " + handlerClassName, e);
            } catch (InstantiationException e) {
                log.error(e.getMessage());
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            } catch (IllegalAccessException e) {
                log.error(e.getMessage());
                throw new GFacException("Cannot instantiate handler class " + handlerClassName, e);
            }
            try {
                handler.invoke(jobExecutionContext);
            } catch (Exception e) {
                // TODO: Better error reporting.
                throw new GFacException("Error Executing a OutFlow Handler", e);
            }
        }

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org.apache.airavata.gfac.core.cpi.BetterGfacImpl

org.apache.airavata.gfac.core.cpi.GFacImpl

org.apache.airavata.gfac.monitor.util.CommonUtils

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