Examples with PyObject org.python.core.PyObject used on opensource projects

Example 66 with PyObject

use of org.python.core.PyObject in project myrobotlab by MyRobotLab.

the class Python method createPythonInterpreter.

/**
 */
public void createPythonInterpreter() {
    // TODO: If the username on windows contains non-ascii characters
    // the Jython interpreter will blow up.
    // The APPDATA environment variable contains the username.
    // as a result, jython sees the non ascii chars and it causes a utf-8
    // decoding error.
    // overriding of the APPDATA environment variable is done in the agent
    // as a work around.
    // work around for 2.7.0
    // http://bugs.jython.org/issue2355
    // ??? - do we need to extract {jar}/Lib/site.py ???
    Properties props = new Properties();
    /*
		 * Used to prevent: console: Failed to install '':
		 * java.nio.charset.UnsupportedCharsetException: cp0.
		 */
    props.put("python.console.encoding", "UTF-8");
    /*
		 * don't respect java accessibility, so that we can access protected
		 * members on subclasses
		 */
    props.put("python.security.respectJavaAccessibility", "false");
    props.put("python.import.site", "false");
    Properties preprops = System.getProperties();
    PythonInterpreter.initialize(preprops, props, new String[0]);
    interp = new PythonInterpreter();
    PySystemState sys = Py.getSystemState();
    if (modulesDir != null) {
        sys.path.append(new PyString(modulesDir));
    }
    log.info("Python System Path: {}", sys.path);
    String selfReferenceScript = "from org.myrobotlab.service import Runtime\n" + "from org.myrobotlab.service import Python\n" + String.format("%s = Runtime.getService(\"%s\")\n\n", getSafeReferenceName(getName()), getName()) + "Runtime = Runtime.getInstance()\n\n" + String.format("myService = Runtime.getService(\"%s\")\n", getName());
    PyObject compiled = getCompiledMethod("initializePython", selfReferenceScript, interp);
    interp.exec(compiled);
}

Example 67 with PyObject

use of org.python.core.PyObject in project scisoft-core by DawnScience.

the class PythonUtils method convertPySlicesToSlice.

/**
 * Convert an array of python slice objects to a slice array
 *
 * @param indexes
 * @param shape
 * @return slice array
 */
private static SliceData convertPySlicesToSlice(final PyObject indexes, final int[] shape) {
    PyObject[] indices = indexes instanceof PySequenceList ? ((PySequenceList) indexes).getArray() : new PyObject[] { indexes };
    int orank = shape.length;
    // count new axes
    int na = 0;
    // count collapsed dimensions
    int nc = 0;
    // count slices or ellipses
    int ns = 0;
    boolean hasEllipsis = false;
    for (int j = 0; j < indices.length; j++) {
        PyObject index = indices[j];
        if (index instanceof PyNone) {
            na++;
        } else if (index instanceof PyInteger) {
            nc++;
        } else if (index instanceof PySlice) {
            ns++;
        } else if (index instanceof PyEllipsis) {
            if (hasEllipsis) {
                throw new IllegalArgumentException("Only one ellipsis is allowed");
            }
            hasEllipsis = true;
            ns++;
        } else {
            throw new IllegalArgumentException("Unsupported object in index: " + index);
        }
    }
    // number of spare dimensions
    int spare = orank - nc - ns;
    SliceND slice = new SliceND(shape);
    hasEllipsis = false;
    // flag which dimensions are sliced
    boolean[] sdim = new boolean[orank];
    // new axes
    int[] axes = new int[na];
    int i = 0;
    // new axes
    int a = 0;
    // collapsed dimensions
    int c = 0;
    for (int j = 0; i < orank && j < indices.length; j++) {
        PyObject index = indices[j];
        if (index instanceof PyEllipsis) {
            sdim[i++] = true;
            if (!hasEllipsis) {
                // pad out with full slices on first ellipsis
                hasEllipsis = true;
                for (int k = 0; k < spare; k++) {
                    sdim[i++] = true;
                }
            }
        } else if (index instanceof PyInteger) {
            int n = ((PyInteger) index).getValue();
            if (n < -shape[i] || n >= shape[i]) {
                throw new PyException(Py.IndexError);
            }
            if (n < 0) {
                n += shape[i];
            }
            // nb specifying indexes whilst using slices will reduce rank
            sdim[i] = false;
            slice.setSlice(i++, n, n + 1, 1);
            c++;
        } else if (index instanceof PySlice) {
            PySlice pyslice = (PySlice) index;
            sdim[i] = true;
            Slice nslice = convertToSlice(pyslice);
            slice.setSlice(i++, nslice.getStart(), nslice.getStop(), nslice.getStep());
        } else if (index instanceof PyNone) {
            // newaxis
            axes[a++] = (hasEllipsis ? j + spare : j) - c;
        } else {
            throw new IllegalArgumentException("Unexpected item in indexing");
        }
    }
    assert nc == c;
    while (i < orank) {
        sdim[i++] = true;
    }
    while (a < na) {
        axes[a] = i - c + a;
        a++;
    }
    int[] sShape = slice.getShape();
    int[] newShape = new int[orank - nc];
    i = 0;
    for (int j = 0; i < orank; i++) {
        if (sdim[i]) {
            newShape[j++] = sShape[i];
        }
    }
    if (na > 0) {
        int[] oldShape = newShape;
        newShape = new int[newShape.length + na];
        i = 0;
        for (int k = 0, j = 0; i < newShape.length; i++) {
            if (k < na && i == axes[k]) {
                k++;
                newShape[i] = 1;
            } else {
                newShape[i] = oldShape[j++];
            }
        }
    }
    SliceData sd = new SliceData();
    sd.slice = slice;
    sd.shape = newShape;
    return sd;
}

Example 68 with PyObject

use of org.python.core.PyObject in project scisoft-core by DawnScience.

the class PythonUtils method convertToJava.

/**
 * Convert tuples/lists of tuples/lists to Java lists of lists. Also convert complex numbers to Apache Commons
 * version and Jython strings to strings
 *
 * @param obj
 * @return converted object
 */
public static Object convertToJava(Object obj) {
    if (obj == null || obj instanceof PyNone)
        return null;
    if (obj instanceof PySequenceList) {
        obj = ((PySequenceList) obj).toArray();
    }
    if (obj instanceof PyArray) {
        obj = ((PyArray) obj).getArray();
    }
    if (obj instanceof List<?>) {
        @SuppressWarnings("unchecked") List<Object> jl = (List<Object>) obj;
        int l = jl.size();
        for (int i = 0; i < l; i++) {
            Object lo = jl.get(i);
            if (lo instanceof PyObject) {
                jl.set(i, convertToJava(lo));
            }
        }
        return obj;
    }
    if (obj.getClass().isArray()) {
        int l = Array.getLength(obj);
        for (int i = 0; i < l; i++) {
            Object lo = Array.get(obj, i);
            if (lo instanceof PyObject) {
                Array.set(obj, i, convertToJava(lo));
            }
        }
        return obj;
    }
    // NB PyLong gets converted to BigInteger automatically so pass it through
    if (obj instanceof BigInteger || !(obj instanceof PyObject)) {
        return obj;
    }
    if (obj instanceof PyComplex) {
        PyComplex z = (PyComplex) obj;
        return new Complex(z.real, z.imag);
    } else if (obj instanceof PyString) {
        return obj.toString();
    }
    return ((PyObject) obj).__tojava__(Object.class);
}

Example 69 with PyObject

use of org.python.core.PyObject in project zenoss-zep by zenoss.

the class TriggerPlugin method eventSatisfiesRule.

protected boolean eventSatisfiesRule(RuleContext ruleContext, String triggerUuid, String ruleSource) {
    PyObject result;
    try {
        // check to see if the cache is full and log an error if so
        if (this.cacheIsFull(this.triggerRuleCache)) {
            ++cacheSizeWarningCounter;
            if (cacheSizeWarningCounter % 100 == 0) {
                logger.error("Trigger rule cache is full ({}); consider reconfiguring zeneventserver, making it larger", this.getTriggerRuleCacheSize());
                cacheSizeWarningCounter = 0;
            }
        }
        // use rule to build and evaluate a Python lambda expression
        TriggerRuleCache cacheItem = triggerRuleCache.get(triggerUuid);
        PyFunction fn = null;
        if (cacheItem == null || !cacheItem.getRuleSource().equals(ruleSource)) {
            try {
                fn = (PyFunction) this.pythonHelper.getPythonInterpreter().eval("lambda evt, dev, elem, sub_elem, zp_det : " + ruleSource);
            } catch (PySyntaxError e) {
                String fmt = Py.formatException(e.type, e.value);
                logger.warn("syntax error exception raised while compiling rule: {}, {}", ruleSource, fmt);
            }
            // Cache result of trigger evaluation (even if it failed to compile). This will prevent trying to
            // recompile the same invalid rule over and over again.
            triggerRuleCache.put(triggerUuid, new TriggerRuleCache(ruleSource, fn));
        } else {
            fn = cacheItem.getPyFunction();
        }
        if (fn == null) {
            logger.debug("Invalid rule source: {}", ruleSource);
            return false;
        }
        // evaluate the rule function
        PyObject[] args = { ruleContext.event, ruleContext.device, ruleContext.element, ruleContext.subElement, ruleContext.zpDetails };
        result = fn.__call__(args);
    } catch (PySyntaxError pysynerr) {
        // evaluating rule raised an exception - treat as "False" eval
        String fmt = Py.formatException(pysynerr.type, pysynerr.value);
        logger.warn("syntax error exception raised while compiling rule: {}, {}", ruleSource, fmt);
        result = new PyInteger(0);
    } catch (PyException pyexc) {
        // and an eval of False is fine. Otherwise we should log in case there's a real issue.
        if (!pyexc.match(Py.AttributeError)) {
            String fmt = Py.formatException(pyexc.type, pyexc.value);
            logger.warn("exception raised while evaluating rule: {}, {}", ruleSource, fmt);
        } else if (logger.isDebugEnabled()) {
            String fmt = Py.formatException(pyexc.type, pyexc.value);
            logger.debug("AttributeError raised while evaluating rule: {}, {}", ruleSource, fmt);
        }
        result = new PyInteger(0);
    }
    // object-as-bool evaluator
    return result.__nonzero__();
}

Example 70 with PyObject

use of org.python.core.PyObject in project cloud-slang by CloudSlang.

the class ScriptEvaluator method getSensitive.

@Deprecated
private boolean getSensitive(Map<String, Serializable> executionResultContext, boolean systemPropertiesInContext) {
    if (systemPropertiesInContext) {
        Map<String, Serializable> context = new HashMap<>(executionResultContext);
        PyObject rawSystemProperties = (PyObject) context.remove(SYSTEM_PROPERTIES_MAP);
        @SuppressWarnings("unchecked") Map<String, Value> systemProperties = Py.tojava(rawSystemProperties, Map.class);
        @SuppressWarnings("unchecked") Collection<Serializable> systemPropertyValues = (Collection) systemProperties.values();
        return checkSensitivity(systemPropertyValues) || checkSensitivity(context.values());
    } else {
        return (checkSensitivity(executionResultContext.values()));
    }
}