Examples of com.sun.grid.jsv.JobDescription

com.sun.grid.jsv.JobDescription
The JobDescription class represents a job to be verified by the JSV. It contains the values of all submissions attributes applied to the job as well as the job's environment variables' values if requested. All properties of this class may be null. A property with a null value indicates that the value was not set by the JSV framework, and hence was not a submission attribute of the job being verified. Care must be taken with the Boolean and Integer properties to prevent null pointer exceptions caused by autoboxing. Setting a property value to null deletes the corresponding submission attribute from the job being verified. All properties of Collection type return copies of the Collection from their getter methods. In order to make changes to the contents of the Collection, the corresponding setter method must be called. It is acceptable to make the changes to the Collection instance returned from the getter method and then commit those changes by passing that Collection instance to the setter method. The JobDescription class uses the Logger named "com.sun.grid.Jsv". By default the Logger is set not to pass log records to its parent logger because the default Logger writes to stdout and would disrupt the JSV protocol. By default, the Logger has no handlers installed. In order to enable logging, add a handler, i.e. a FileHandler instance. It is always a good idea to enabling logging, as errors in JSV protocol handling will be logged as warnings, but will not be visible any other way. @see JsvManager#requestEnvironment(boolean) @since 6.2u5

    public void onStart(JsvManager jsv) {
        jsv.requestEnvironment(true);
    }


    public void onVerify(JsvManager jsv) {
        JobDescription params = jsv.getJobDescription();


        if ((params.isBinary() != null) && params.isBinary()) {
            jsv.reject("Binary job is rejected.");
        } else if ((params.getParallelEnvironment() != null) &&
                ((params.getParallelEnvironment().getRangeMin() % 16) != 0)) {
            jsv.reject("Parallel job does not request a multiple of 16 slots");
        } else {
            Map<String,String> hard = params.getHardResourceRequirements();
            boolean wait = false;
            boolean mod = false;


            if (hard != null) {
                if (hard.containsKey("h_vmem")) {
                    wait = true;
                }


                if (hard.remove("h_data") != null) {
                    mod = true;


                    if (params.getContext().equalsIgnoreCase("client")) {
                        jsv.log(JsvManager.LogLevel.INFO, "h_data as hard resource requirement has been deleted");
                    }


                    params.setHardResourceRequirements(hard);
                }
            }


            Map<String,String> context = params.getJobContext();


            if (context != null) {
                if (context.containsKey("a")) {
                    context.put("a", Integer.toString(Integer.parseInt(context.get("a")) + 1));
                } else {
                    context.put("a", "1");
                }


                context.remove("b");
                context.remove("c");
                context.put("d", "5");


                params.setJobContext(context);
            }


            if (wait) {
                jsv.rejectWait("Job is rejected. It might be submitted later.");
            } else if (mod) {

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    public void onStart(JsvManager jsv) {
        log.info("Starting job verification");
    }


    public void onVerify(JsvManager jsv) {
        JobDescription job = jsv.getJobDescription();
        Map<String,String> res = job.getHardResourceRequirements();
        String path = null;


        if ((res != null) && res.containsKey(PATH_KEY)) {
            path = res.get(PATH_KEY);
        } else if ((res != null) && res.containsKey(PATH_KEY_SHORT)) {
            path = res.get(PATH_KEY_SHORT);
        }


        if (path != null) {
            if (verifyPath(path)) {
                Map<String,String> soft = job.getSoftResourceRequirements();


                try {
                    Collection<LocatedBlock> blocks = null;


                    blocks = getBlocks(path, getConf());


                    // Add new requests
                    soft.putAll(buildRackRequests(blocks));
                    soft.putAll(buildBlockRequests(blocks));
                    job.setSoftResourceRequirements(soft);


                    // Remove old request
                    res.remove(PATH_KEY);
                    res.remove(PATH_KEY_SHORT);
                    job.setHardResourceRequirements(res);
                } catch (FileNotFoundException e) {
                    jsv.reject("The requested data path does not exist: " + path);
                } catch (IOException e) {
                    log.warning("Unable to contact Namenode: " + StringUtils.stringifyException(e));
                    jsv.log(JsvManager.LogLevel.ERROR, "Unable to contact Namenode: " + e.getMessage());

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