I am logging log using log4net in an ActionMethod whose name is LogHandlerMethod(). That ActionMethod is called inside different functions(Actions). How to get methodname of those functions inside which LogHandlerMethod() has been called
You can do this with a CallerMemberNameAttribute:
public void LogHandlerMethod(... my parameters ... ,[CallerMemberName]string memberName = "")
{
//memberName will contain name of calling method
Call this without the adding the memberName parameter (the memberName will be filled by the CallerMemberNameAtribute)
Related
I'm just getting to grips with ViewComponents in my Razor pages application.
I have a ViewComponents folder within my project that contains my ViewComponent .cs code:
public class RemoveFromCartViewComponent : ViewComponent
{
public IViewComponentResult Invoke()
{
var result = "123";
return View(result);
}
}
I then have another folder within Pages/Shared/Components called RemoveFromCart. Within this folder I have my default.cshtml
#model string
<h2>
#Model
</h2>
Simply putting the string within a h2 tag.
In my projects Layout.cshtml file I am invoking this ViewComponent:
<div>
#await Component.InvokeAsync("RemoveFromCart")
</div>
When I start my project, the error I get is:
*InvalidOperationException: The view 'Components/RemoveFromCart/123' was not found. The following locations were searched:
/Pages/Components/RemoveFromCart/123.cshtml
/Pages/Shared/Components/RemoveFromCart/123.cshtml
/Views/Shared/Components/RemoveFromCart/123.cshtml*
This is indication my view should be called 123.cshtml which doesnt seem right. What am I doing wrong here? I should simply expect to see the text 123 appear
Thanks
By returning View("123"), you are using this overload:
public ViewViewComponentResult View (string viewName)
Returns a result which will render the partial view with name viewName.
So you are passing the view name, instead of a string value as the view’s model.
You can change that by explicitly calling the View<TModel>(TModel) overload instead:
public IViewComponentResult Invoke()
{
var result = "123";
return View<string>(result);
}
In the long run, I would suggest you to create a model class instead so that you can pass an object instead of just a string. This will avoid having this particular problem and you are also able to easily expand the model contents later on.
i have two jsf pages (home.jsf and employees.jsf) ,
home page has a button that navigates to employees page,
while navigating i store value in session scope
at (Managed bean)
public void putSessionAL(ActionEvent actionEvent) {
FacesContext.getCurrentInstance().getExternalContext().getSessionMap().put("key","value");
}
public String navigate() {
return "employees";
}
i want to change Label at employees viewObject from UIHints tab depending on value stored at session using the following groovy expression
adf.context.sessionScope.key
and changed trustMode to trusted but it fires the following exception
oracle.jbo.script.ExprScriptException: JBO-29114 ADFContext is not setup to process messages for this exception. Use the exception stack trace and error code to investigate the root cause of this exception. Root cause error code is JBO-25188. Error message parameters are {0=Employees.FirstName, 1=, 2=oracle.jbo.script.ExprSecurityException}
at oracle.jbo.script.ExprScriptException.throwException(ExprScriptException.java:316)
at oracle.jbo.script.ExprScriptException.throwExceptionWithExprDef(ExprScriptException.java:387)
at oracle.jbo.ExprEval.processScriptException(ExprEval.java:599)
at oracle.jbo.ExprEval.doEvaluate(ExprEval.java:697)
at oracle.jbo.ExprEval.evaluate(ExprEval.java:508)
at oracle.jbo.ExprEval.evaluate(ExprEval.java:487)
at oracle.jbo.common.NamedObjectImpl.resolvePropertyRaw(NamedObjectImpl.java:680)
at oracle.jbo.server.DefObject.resolvePropertyRaw(DefObject.java:366)
One way to do it at the VO UIHint attribute label level will be programmaticaly by doing as follow :
In your VO go to the java tab and add the RowImpl java class
In the VORowImpl Add the following function
public String getMySessionLabel() {
return (String)FacesContext.getCurrentInstance().getExternalContext().getSessionMap().get("key");
}
In the Label add the following EL expression :
adf.object.getMySessionLabel()
This technique allow you more control than pure EL, if you want to do more than getting from session for example. In your case pure EL, as you did, should work as well. (Would need to check what is wrong with yours, maybe just missing the
#{adf.context.sessionScope.key}
If you attempt to get your label from a method in viewRowImpl. So this will be executed at least once for each row. I think this solution isn't fit for your case.
anyway ADF as a framework added strong policy and validations in EL in general and especially in version 12.2.x.
The solution for you case as following:
Create new class in model layer which extends oracle.jbo.script.ExprSecurityPolicy class
Override checkProperty method.
#Override
public boolean checkProperty(Object object, String string, Boolean b) {
if (object.getClass().getName().equals("oracle.adf.share.http.ServletADFContext") && string.equals("sessionScope")) {
return true;
}
return super.checkProperty(object, string, b);
}
Open adf-config.xml source and in startup tag set your class ExprSecurityPolicy property.
like:
<startup ExprSecurityPolicy="model.CustomExprSecurityPolicy">
I'm using an Azure function to pick up messages from an event hub and send out notifications via the Azure notification hub. Works great! Now I wanted to see whether I could add tags to those messages in order to allow user targeting via those tags.
The output for the notification hub has a "tag expression" parameter which you can configure. But this seems to be a static text. I need to dynamically set these tags based on the message received from the event hub instead. I'm not sure whether you can somehow put dynamic content in there?
I also found that the constructor of the GcmNotification object that I'm using has an overload which allows a tag string to be used. But when I try that I get a warning on compile time stating this is deprecated and when the function fires it shows an error because the Tag property should be empty.
So I'm not clear on a) whether this is at all possible and b) how to do it when it is. Any ideas?
Update: as suggested I tried creating a POCO object to map to my input string. The string is as follows:
[{"deviceid":"repsaj-neptune-win10pi","readingtype":"temperature1","reading":22.031614503139451,"threshold":23.0,"time":"2016-06-22T09:38:54.1900000Z"}]
The POCO object:
public class RuleMessage
{
public string deviceid;
public string readingtype;
public object reading;
public double threshold;
public DateTime time;
}
For the function I now tried both RuleMessage[] and List<RuleMessage> as parameter types, but the function complains it cannot convert the input:
2016-06-24T18:25:16.830 Exception while executing function: Functions.submerged-function-ruleout. Microsoft.Azure.WebJobs.Host: Exception binding parameter 'inputMessage'. Microsoft.Azure.WebJobs.Host: Binding parameters to complex objects (such as 'RuleMessage') uses Json.NET serialization.
1. Bind the parameter type as 'string' instead of 'RuleMessage' to get the raw values and avoid JSON deserialization, or
2. Change the queue payload to be valid json. The JSON parser failed: Cannot deserialize the current JSON array (e.g. [1,2,3]) into type 'Submission#0+RuleMessage' because the type requires a JSON object (e.g. {"name":"value"}) to deserialize correctly.
To fix this error either change the JSON to a JSON object (e.g. {"name":"value"}) or change the deserialized type to an array or a type that implements a collection interface (e.g. ICollection, IList) like List that can be deserialized from a JSON array. JsonArrayAttribute can also be added to the type to force it to deserialize from a JSON array.
Function code:
using System;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using Microsoft.Azure.NotificationHubs;
public static void Run(List<RuleMessage> inputEventMessage, string inputBlob, out Notification notification, out string outputBlob, TraceWriter log)
{
if (inputEventMessage == null || inputEventMessage.Count != 1)
{
log.Info($"The inputEventMessage array was null or didn't contain exactly one item.");
notification = null;
outputBlob = inputBlob;
return;
}
log.Info($"C# Event Hub trigger function processed a message: {inputEventMessage[0]}");
if (String.IsNullOrEmpty(inputBlob))
inputBlob = DateTime.MinValue.ToString();
DateTime lastEvent = DateTime.Parse(inputBlob);
TimeSpan duration = DateTime.Now - lastEvent;
if (duration.TotalMinutes >= 0) {
notification = GetGcmMessage(inputMessage.First());
log.Info($"Sending notification message: {notification.Body}");
outputBlob = DateTime.Now.ToString();
}
else {
log.Info($"Not sending notification message because of timer ({(int)duration.TotalMinutes} minutes ago).");
notification = null;
outputBlob = inputBlob;
}
}
private static Notification GetGcmMessage(RuleMessage input)
{
string message;
if (input.readingtype == "leakage")
message = String.Format("[FUNCTION GCM] Leakage detected! Sensor {0} has detected a possible leak.", input.reading);
else
message = String.Format("[FUNCTION GCM] Sensor {0} is reading {1:0.0}, threshold is {2:0.0}.", input.readingtype, input.reading, input.threshold);
message = "{\"data\":{\"message\":\""+message+"\"}}";
return new GcmNotification(message);
}
public class RuleMessage
{
public string deviceid;
public string readingtype;
public object reading;
public double threshold;
public DateTime time;
}
Update 28-6-2016: I've not managed to get it working by switching ASA output to line seperated to that it doesn't generate a JSON array any more. This is a temp. fix because the Function binding now fails as soon as there is more than one line in the output (which can happen).
Anyways, I now proceeded to set the tagExpression, as per instruction I changed it to:
{
"type": "notificationHub",
"name": "notification",
"hubName": "repsaj-neptune-notifications",
"connection": "repsaj-neptune-notifications_NOTIFICATIONHUB",
"direction": "out",
"tagExpression": "deviceId:{deviceid}"
}
Where {deviceid} equals the deviceid property on my RuleMessage POCO. Unfortunately this doesn't work, when I call the function it outputs:
Exception while executing function: Functions.submerged-function-ruleout. Microsoft.Azure.WebJobs.Host: Exception binding parameter 'notification'. Microsoft.Azure.WebJobs.Host: No value for named parameter 'deviceid'.
Which is not true, I know for sure the property has been set as I've logged it to the ouput window. I also tried something like {inputEventMessage.deviceid}, but that doesn't work either (as I didn't get how the runtime would map {deviceid} to the correct input object when there's more than one.
The tagExpression binding property supports binding parameters coming from trigger input properties. For example, assume your incoming Event Hub event has properties A and B. You can use these properties in your tagExpression using the parens syntax, e.g.: My Tag {A}-{B}.
In general, most of the properties across all the binding types support binding parameters in this way.
I'm trying to override the getDescriptiveName() method in com.liferay.portal.model.Group
I found a wrapper (com.liferay.portal.model.GroupWrapper), so I tried to write a hook as written in the documentation :
liferay-hook.xml:
<service>
<service-type>com.liferay.portal.model.GroupWrapper</service-type>
<service-impl>fr.villedeniort.hook.expando.GroupWrapperImpl</service-impl>
</service>
fr.villedeniort.hook.expando.GroupWrapperImpl.java:
public class GroupWrapperImpl extends GroupWrapper {
public GroupWrapperImpl(Group group) {
super(group);
}
#Override
public java.lang.String getDescriptiveName()
throws com.liferay.portal.kernel.exception.PortalException,
com.liferay.portal.kernel.exception.SystemException {
return super.getDescriptiveName();
}
When the hook is deployed, it raises an exception :
java.lang.NoSuchMethodException: fr.villedeniort.hook.expando.GroupWrapperImpl.<init>(com.liferay.portal.model.GroupWrapper)
I browse the code I found out that it breaks at this part for a reason I ignore:
Constructor<?> serviceImplConstructor = serviceImplClass.getConstructor(new Class<?>[] {serviceTypeClass});
At this point, variables have theses values:
serviceType "com.liferay.portal.model.GroupWrapper" (id=14829)
serviceImpl "fr.villedeniort.hook.expando.GroupWrapperImpl" (id=14830)
serviceTypeClass Class<T> (com.liferay.portal.model.GroupWrapper) (id=14831)
serviceImplClass Class<T> (fr.villedeniort.hook.expando.GroupWrapperImpl) (id=14832)
Do you have any idea?
Thanks!
You should have also a constructor without any argument. Now you have one with constuctor arguments, but there is no pure class constructor that java searches when it makes class instance. After calling the pure constructor java then calls the argumented one.
I had similar case in some other context and this was the solution. <init> tag on the error message refers on this kind of issue.
Apparently, it's not possible to hook other classes than Services, so I had to find a different way. For my case, I hooked a JSP and wrote my own method to get the right descriptive name from the hook.
Is there a way to log an event into the windows event log with a specified eventid per message? I am using log4net v 1.2.10.
Based on what I see in the EventLogAppender source code the following should do the trick:
log4net.ThreadContext.Properties["EventID"] = 5;
Just call this before you write your log messages (if you do not set it for all messages you should remove the "EventID" again from the Properties.
N.B the property key is case sensitive.
When one uses the native .net Event Log APIs in System.Diagnostics, the WriteEntry methods allow setting the eventID and category. In these APIs:
eventID is a 32 bit int, but its value must be between 0 and 65535
category is a 16 bit int, but its value must be positive. If the
event source includes a category resource file, the event viewer will
use the integer category value to lookup a localized “Task category”
string. Otherwise, the integer value is displayed.
The categories must be numbered consecutively, beginning with the
number 1
Log4net supports writing an EventID and a Category, but it isn’t straight forward. When log4net’s EventLogAppender logs an event, it looks at a dictionary of properties. The named properties "EventID" and "Category" are automatically mapped by the EventLogAppender to the corresponding values in the event log. I’ve seen a few good suggested ways to use log4net’s EventLogAppender and set the EventID and Category in the Windows event log.
a. Using log4net’s appender filtering, a filter may be registered that can add the EventID and Category properties. This method has a nice benefit that the standard log4net wrappers are used and so this can be implemented without changing existing logging code. The difficulty in this method is some mechanism has to be created to calculate the EventID and Category from the logged information. For instance, the filter could look at the exception source and map that source to a Category value.
b. Log4net may be extended so custom logging wrappers can be used that can include EventID and Category parameters. Adding EventID is demonstrated in the log4net sample “Extensibility – EventIDLogApp” which is included in the log4net source. In the extension sample a new interface (IEventIDLog) is used that extends the standard ILog interface used by applications to log. This provides new logging methods that include an eventId parameter. The new logging methods add the eventId to the Properties dictionary before logging the event.
public void Info(int eventId, object message, System.Exception t)
{
if (this.IsInfoEnabled)
{
LoggingEvent loggingEvent = new LoggingEvent(ThisDeclaringType, Logger.Repository, Logger.Name, Level.Info, message, t);
loggingEvent.Properties["EventID"] = eventId;
Logger.Log(loggingEvent);
}
}
c. Log4net supports a ThreadContext object that contains a Properties dictionary. An application could set the EventID and Category properties in this dictionary and then when the thread calls a logging method, the values will be used by the EventLogAppender.
log4net.ThreadContext.Properties["EventID"] = 5;
Some helpful references:
Log4net home page
Log4net SDK reference
Log4net samples
Log4net source
Enhancing log4net exception logging
Log4Net Tutorial pt 6: Log Event Context
Customizing Event Log Categories
EventSourceCreationData.CategoryResourceFile Property
Event Logging Elements
EventLog.WriteEntry Method
Well, the solution was to build the extension project "log4net.Ext.EventID" and to use its types: IEventIDLog, EventIDLogImpl and EventIDLogManager.
Another solution is to add a custom Filter as described here: Enhancing log4net exception logging (direct link to the Gist just in case).
As the author points out:
... EventLogAppender uses inline consts to check them. Once they are added they will be used by the mentioned EventLogAppender to mark the given entries with EventId and Category.
The filter implementation will look like the code below (stripped down gist) with the added benefit that if you make GetEventId method public, you can write some tests against it
public class ExceptionBasedLogEnhancer : FilterSkeleton
{
private const string EventLogKeyEventId = "EventID";
public override FilterDecision Decide(LoggingEvent loggingEvent)
{
var ex = loggingEvent.ExceptionObject;
if (ex != null)
{
loggingEvent.Properties[EventLogKeyEventId] = GetEventId(ex);
}
return FilterDecision.Neutral;
}
private static short GetEventId(Exception ex)
{
// more fancy implementation, like getting hash of ex properties
// can be provided, or mapping types of exceptions to eventids
// return no more than short.MaxValue, otherwise the EventLog will throw
return 0;
}
}
Extend ILog.Info() to take an event ID:
public static class LogUtils
{
public static void Info(this ILog logger, int eventId, object message)
{
log4net.ThreadContext.Properties["EventID"] = eventId;
logger.Info(message);
log4net.ThreadContext.Properties["EventID"] = 0; // back to default
}
}
Then call it like this:
using LogUtils;
private static readonly log4net.ILog _logger = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
_logger.Info(3, "First shalt thou take out the Holy Pin, then shalt thou count to three.");