I create event logs for asp.net projects error logging. I do it by adding a key in regedit, and then a sub-key.
Sometimes, I create a new key and sub-key, and instead of getting a new, empty event log, I see in the event viewer that it's showing me the logs from a different project. I'm not able to find a pattern as to when this happens.
Has anyone encountered such a problem? Am I doing something wrong?
You probably want to use the EventLog.CreateEventSource API to do this - it should take care of any details for you.
A quick read thru the docs seems to show that the 1st 8 characters are checked for uniqueness...perhaps that's where your issue is?
Edit: From Reflector, the API does this...
Check for invalid characters ("non printable" based on Unicode category, \, *, ?)
Checks that the created reg key will be <= 254 characters
Checks if the source is already registered
Checks that the log name isn't reserved (AppEvent, SecEvent, SysEvent)
Checks for another log with the same beginning 8 chars
Checks that the log name doesn't exist as a source
Creates the log subkey
Initializes the log subkey with default values (MaxSize = 524288, AutoBackupLogFiles = 9. Retention = 604800, File = %SystemRoot%\System32\config\logName.Substring(0, 8) + ".evt")
If OS is not > Windows NT 5.x (Vista or higher), creates a multi string value on the logkey with logName and source name. Or, if value exists, appends source name to the existing array.
Creates a subkey for source
Initializes the source subkey with default values (EventMessageFile, ParameterMessageFile, CategoryMessageFile, CategoryCount)
It seems that the problem was that we had already created an event log with that name, and even though we deleted it, it didn't help. The solution was to create an event log with a different name.
Related
We have a Xamarin Forms app.
We have a few existing users which had been using the app since last year where the database file name is MyAppName.db
Our new app strategy requires us to include the .db (Sqlite) along with the app to ensure we can include persistent information and does not require internet when you install the app, meaning we hope to overwrite the db file for existing users.
After we publish this new change where the database file is now MyNewDbFile.db, our users complain that they do not see any data, the app does not crash tough.
We capture error reports and we can see a common error in the our tool stating about "row value missused", a quick search indicates the value are not present and so the "SELECT * FROM TABLE WHERE COLUMNAME" query does not work causing the exception.
We can confirm we are using
Xamarin.Forms version 4.5.x
sqlite-net-sqlcipher version 1.6.292
We do not have any complex logic and cannot see a very specific reason causing this as this is not produced when we test our apps from the Alpha channel or the TestFlight.
We investigated the heart of the problem and can confirm that the troublemaker is the device Culture information.
We have been testing with English as the device language, however the minute the app is used by folks with any other language except English the query causes exception.
We make use of the Xamarin Essentials library to get device location (which is optional).
The latitude and longitude returned are culture specific.
So if you are using a Spanish language on device, the format for the Latitude and Longitude information is a , (comma) and NOT a . (dot).
That is, a Latitude value is something similar to 77.1234
where it is separated by a . (dot)
However for users with different region settings on device, the format would change to
77,1234 as value where it is separated by a , (comma).
The query requires us to have the values as string and that when not separated by a . (dot) fails to execute:
Query:
if (deviceLocation != null)
queryBuilder.Append($" ORDER BY((Latitude - {deviceLocation.Latitude})*(Latitude - {deviceLocation.Latitude})) +((Longitude - {deviceLocation.Longitude})*(Longitude - {deviceLocation.Longitude})) ASC");
Where the deviceLocation object is of type Xamarin.Essentials.Location which has double Latitude and Longitude values but when used as a string or even if you explicitly do deviceLocation.Latitude.ToString(), it would return the formatted values as per the device CultureInfo.
We can confirm that the problem is due to a mismatch of the format type and causing the query to throw an exception and in return making the experience as if there is no data.
I am attempting to create a database of Digital Object Identifier (DOI) found on the internet.
By manually searching the CommonCrawl Index Server manually I have obtained some promising results.
However I wish to develop a programmatic solution.
This may result in my process only requiring to read the index files and not the underlying WARC data files.
The manual steps I wish to automate are these:-
1). for each CommonCrawl Currently available index collection(s):
2). I search ... "Search a url in this collection: (Wildcards -- Prefix: http://example.com/* Domain: *.example.com) " e.g. link.springer.com/*
3). this returns almost 6MB of json data that contains approx 22K unique DOIs.
How can I browse all available CommonCrawl indexes instead of searching for specific URLs?
From reading the API documentation for CommonCrawl I cannot see how I can browse all the indexes to extract all DOIs for all domains.
UPDATE
I found this example java code https://github.com/Smerity/cc-warc-examples/blob/master/src/org/commoncrawl/examples/S3ReaderTest.java
that shows how to access a common crawl dataset.
However when I run it I receive this exception
"main" org.jets3t.service.S3ServiceException: Service Error Message. -- ResponseCode: 404, ResponseStatus: Not Found, XML Error Message: <?xml version="1.0" encoding="UTF-8"?><Error><Code>NoSuchKey</Code><Message>The specified key does not exist.</Message><Key>common-crawl/crawl-data/CC-MAIN-2016-26/segments/1466783399106.96/warc/CC-MAIN-20160624154959-00160-ip-10-164-35-72.ec2.internal.warc.gz</Key><RequestId>1FEFC14E80D871DE</RequestId><HostId>yfmhUAwkdNeGpYPWZHakSyb5rdtrlSMjuT5tVW/Pfu440jvufLuuTBPC25vIPDr4Cd5x4ruSCHQ=</HostId></Error>
In fact every file I try to read results in the same error. Why is that?
what is the correct common crawl uri's for their datasets?
The data set location has changed since more than one year, see announcement. However, many examples and libraries still contain the old pointers. You can access the index files for all crawls back to 2013 on s3://commoncrawl/cc-index/collections/CC-MAIN-YYYY-WW/indexes/cdx-00xxx.gz - replace YYYY-WW with year and week of the crawle and expand xxx to 000-299 to get all 300 index parts. New crawl data is announced on the Common Crawl group, or read more about how to access the data.
To get the example code to work replace lines 24 and 25 with:
String fn = "crawl-data/CC-MAIN-2013-48/segments/1386163035819/warc/CC-MAIN-20131204131715-00000-ip-10-33-133-15.ec2.internal.warc.gz";
S3Object f = s3s.getObject("commoncrawl", fn, null, null, null, null, null, null);
Also note that the commoncrawl group have an updated example.
Working on Work Execution app (v 7.5.2). In MAM, Field having datatype as INTEGER (4) but when I enter values "1234567890123456789' in Anywhere, it doesn't throw error instantly but after saving, It throws "Database error number -4461 has occurred when operating on WORKLOG : WorkLog ID=1234. Report the error to the owner of the deployment."
Either User should warn immediately after entered or Need to restrict the MaxLength to enter in TEXTBOX. How to do ?
You can put some validate javascript code on the dataChange event for this field to validate that less than 4 characters were input. You can also open a PMR as this seems like a limitation that we would address in a future release.
I want to customize the standard drill-down functionality and add a text parameter to the drill-down URL. I will then parse and use the parameter in the SysStartUpCmdDrillDown or EventDrillDownPoller class like the solution provided by Jan B. Kjeldsen in this question.
The standard drill-down link is dynamics://Target/?DrillDown_RecID/ :
dynamics://0/?DrillDown_5637230378/
In previous versions of AX it was possible to modify the RecId to custom text and parse the text once the client is started:
dynamics://0/?DrillDown_0MenuItemName=PurchTable&FieldName=PurchId&FieldValue=P000044
Unfortunately, in AX 2012 the RecId is checked before the client is started and if it is not a valid int64, the drill-down event is not sent to the client. Since it is not possible to change the RecId to anything other than an integer, #Alex Kwitny suggested in the comments at that same question that you can add the custom text to the drill-down target like this:
dynamics://0MenuItemName=PurchTable/?DrillDown_5637230378/
The problem I experience with this is that the link now gets confused about which instance to start.
If the target is equal to the value in the System Admin -> system parameters -> Alerts ->Drill-down target, a client with the correct server instance is started. When I append the text with my custom text, it always starts the default instance(Which could be different from the instance I intended to start). While this is not ideal, I could work around this issue.
The bigger problem is that it now always starts a new session of the default instance, even if a client session is already started. As far as I can see I cannot write X++ code to solve this issue since the server instance is determined before any code in the client is executed.
My question is this - How can I add custom text to the drill-down link while preserving the way the client instance is started: If a client for the instance is already open, it should process the link in the open client, and not start up a new client of the default instance.
You should probably come up with another solution as mentioned in this post, but there could still be a way.
The URL has two objects that can be modified:
dynamics://[Drill-down target(str)]/?Drilldown_[Int64]
According to you, if you modify the [Drill-down target], then it launches AX using the default client config, and that is behavior that you don't want. If you have a matching [Drill-down target], it'll launch in the open client window, which is behavior I can't confirm, but I'll take it at face value and assume you're correct.
So that means the only thing you can modify in the URL is [int64]. This is actually a string that is converted to an int64 via str2int64(...), which in turn corresponds to a RecId. This is where it gets interesting.
This work all happens in \Classes\SysStartUpCmdDrillDown\infoRun.
Well, lucky for you the ranges for the objects are:
RecId - 0 to 9223372036854775807
Int64 - -9223372036854775808 to 9223372036854775807
You can call minRecId() and maxRecId() to confirm this.
So this means you have -9223372036854775808 to -1 numbers to work with by calling URLs in this range:
dynamics://0/?DrillDown_-1
to
dynamics://0/?DrillDown_-9223372036854775808
Then you would modify \Classes\SysStartUpCmdDrillDown\infoRun to look for negative numbers, and fork to your custom code.
HOW you decide to user these negative #'s is up to you. You can have the first n-digits be a table id or a look-up value for a custom table. You can't technically use a RecId as part of that negative number because in theory the RecId could get up that high (minus 1).
I am using the ASP.NET Identity framework, with the EntityFramework provider (IdentityDbContext).
I attempt to create a user by calling UserManager.CreateAsync(..).
It returns an object of type IdentityResult, with the following values:
{
Succeeded: false,
Errors: ["Name AndrewShepherd is already taken."]
}
The error is valid - there is indeed another user called "AndrewShepherd" in the database. This is not a name the user picked; instead I am generating this name from the Outh2 account information provided by their Google account. (Google Accounts don't enforce unique names, just unique email addresses).
Since the problem is a duplicate name, I can simply try appending a number to the name and trying again. I would programmatically attempt to create AndrewShepherd_1, AndrewShepherd_2, AndrewShepherd_3 until I am either successful or get a different error.
But how do I programatically determine that the problem was a duplicate name?
Options are:
Perform a pattern match on the error string. This solution is guaranteed to break when the next version of ASP.NET Identity has a differently worded error messages or we internationalize the website.
Run the check before creating the user. I would call UserStore.FindByNameAsync to determine if the name had already been taken before invoking UserManager.CreateASync(..). This would have a small concurrency risk if two different sessions are attempting to add the same user name at the same time.
It would be some much easier if we could simply perform a check like this:
if(identityResult.Errors.Where(e => e.ErrorCode == IdentityErrors.DuplicateName).Any())
Is there a way I can perform a unique user check then add a user, that's safe in a concurrent environment?
As an alternaive, you can check if the user name is exist in your DB like that. If user name is already taken, you can change new user name like AndrewShepherd_1, AndrewShepherd_2, AndrewShepherd_3.
using (YourProjectName.Models.DefaultConnection db = new Models.DefaultConnection ())
{
if (db.AspNetUsers.Select(q => q.UserName).Contains("usernameThatYouWantToCheck"))
{
/*Your code*/
}
}