Download Ubuntu from http://www.ubuntu.com/download/desktop.
Once you have downloaded the ISO of Ubuntu 16.04 or 14.04, go to this page and download the latest version of Universal USB Installer.
Plugin the USB drive in the computer and run Universal USB Installer. You need to do the following things now:
Select Ubuntu under step 1
Browse to the location of downloaded Ubuntu ISO in Step 2 section
In Step 3, select the USB drive and also check the option to format it make sure its FAT32
Step 4: Backup your Windows 10 operating system (optional but highly recommended)
Step 5: Create two partition by shrinking your drive for linux ( 1 for ex2 and 2nd for Swap )
Step 6:We will be using those partition as we boot with usb and see ubuntu install screen
Step 7:Now Restart windows and press F12 ,F2 to go to Boot up screen or Bios setting
Step 8:Stay with UEFI setting as thats the safest way to install another OS and Linux are UEFI safe
Step 9 :If you are using some version of Unix which is not UEFi compatible switch off the SAFE boot menu
Now let live USB run
Step 10:if you receive this error When I try to boot from the USB I get the error msg:
Could not find kernel CONFILE
boot:
Try to recreate the USb and make sure its in FAt 32 mode
Step 11: Now you see the Ubuntu screeen Ubuntu will recognize the windows system and give you option on any non Winodws OS disk In UEFI Mode
Choose the “Install Ubuntu alongside Windows Boot Manager” option.
Something else Option is not good for Dual Boot it will hide one of OS .
Step 12:You can go to advance and see any other Partition Pick those two partition createat step 5
Let it finish make sure you have selected
Choose the “Install Ubuntu alongside Windows Boot Manager” option. otherwise you may not be able to boot into dual mode and
Another topic for those who doesnot want to Install ubuntu and use Windows 10 feature
The Windows 10 feature Windows Subsystem for Linux:
This can give you ability to run Linux bash command but thats not what you want.
For those who want to stick with Windows Subsystem for Linux
You do this by going “System Settings > Advanced Windows Update options” and selecting your Insider Preview update setting to the far right. This sets your Windows 10 update to the the Fast Ring.
After this check for updates, apply all of them, and restart your PC. This gives you its beta operating system so don’t do this on your production machine. Microsoft makes many updates to its Fast Ring releases and adding WSL, Ubuntu, and Bash are only part of them.
Then, you must turn on Developer Mode via Settings > Update & security >
For developers. Next, search for “Windows Features” and choose “Turn Windows features on or off” and
enable Windows Subsystem for Linux
Color is a struct. This type provides a standard way to specify and mutate colors in the C# language. By adding a reference to the System.Drawing assembly, you can access this type and avoid writing your own color routines.
Colors can be represented as ARGB values, which store the alpha transparency, as well as the red, green and blue values. These values are stored as bytes which gives them a range of 0 to 255 inclusive.
So in order to make new color ( thats what this code does) suppose you have two colors color a and color b
Step 1
Please take the color a and convert into RGB component via Private Class colorcomponent
Step 2
do the same step with color b
now for individual R take the average or fraction s if you are creating more than 2 color
Step 3
suppose R component is 100 for color a
suppose R component is 150 for color b
Step 4
then the middle color should have R value as 125
you may create 4 intermediate color in that case your will have R as 110 120 130 140
Step 5 do same for G a nd B also and combine them to color back see colorcomponent class
<p> How to use this class “colorcomponent” </p>
Dim colora As Color
colora = Color.Red
Dim colorb As Color
colorb = Color.Blue
Dim coloracomponent As New colorcomponent()
Dim colorbcomponent As New colorcomponent()
coloracomponent.setcolor(colora)
colorbcomponent.setcolor(colorb)
Dim numberofcolor = 4
Dim outColor(numberofcolor + 1) As Color
ReDim outColor(numberofcolorinbetween + 1)
outColor = coloracomponent.getcolorarray(coloracomponent, colorbcomponent, numberofcolorinbetween + 1)
vb.net code for desktop application
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim colora As Color
colora = ColorTranslator.FromHtml(“#ff66ff”)
Dim colorb As Color
colorb = Color.Green
ListBox1.Items.Add(ColorTranslator.ToHtml(colorb))
ListBox1.Items.Add(ColorTranslator.ToHtml(colora))
End Sub
Private Class colorcomponent
Dim r As Integer
Dim g As Integer
Dim b As Integer
Dim a As Integer
Public Sub setcolor(C As Color)
Me.r = C.R
Me.g = C.G
Me.b = C.B
End Sub
Public Function getcolor(colorcomponent1 As colorcomponent) As Color
getcolor = Color.FromArgb(colorcomponent1.r Mod 256, colorcomponent1.g Mod 256, colorcomponent1.b Mod 256)
End Function
Public Function getcolorwithalpha(colorcomponent1 As colorcomponent, alpha As Byte) As Color
getcolorwithalpha = Color.FromArgb(alpha, CByte(colorcomponent1.r Mod 256), CByte(colorcomponent1.g Mod 256), CByte(colorcomponent1.b Mod 256))
End Function
Public Function getcolorarray(colorcomponent1 As colorcomponent, colorcomponent2 As colorcomponent, numberofcolorsneededinbetween As Double) As Color()
Dim outcolorcomponent As New colorcomponent()
Dim outColor(numberofcolorsneededinbetween) As Color
outColor(0) = getcolor(colorcomponent1)
If numberofcolorsneededinbetween > 0 Then
For i As Double = 1 To numberofcolorsneededinbetween – 1
If (colorcomponent1.r – colorcomponent2.r <> 0) Then
outcolorcomponent.r = (colorcomponent1.r) + (((-colorcomponent1.r + colorcomponent2.r) * i / (numberofcolorsneededinbetween)))
Else
outcolorcomponent.r = (colorcomponent1.r)
End If
If (colorcomponent1.g – colorcomponent2.g <> 0) Then
outcolorcomponent.g = (colorcomponent1.g) + (((-colorcomponent1.g + colorcomponent2.g) * i / (numberofcolorsneededinbetween)))
Else
outcolorcomponent.g = (colorcomponent1.g)
End If
If (colorcomponent1.b – colorcomponent2.b <> 0) Then
outcolorcomponent.b = (colorcomponent1.b) + (((-colorcomponent1.b + colorcomponent2.b) * i / (numberofcolorsneededinbetween)))
Else
outcolorcomponent.b = (colorcomponent1.b)
End If
outColor(i) = getcolor(outcolorcomponent)
Next
End If
outColor(numberofcolorsneededinbetween) = getcolor(colorcomponent2)
Return outColor
End Function
End Class
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim colora As Color
colora = ColorTranslator.FromHtml(“#ff66ff”)
Dim colorb As Color
colorb = Color.Green
Dim coloracomponent As New colorcomponent()
Dim colorbcomponent As New colorcomponent()
coloracomponent.setcolor(colora)
colorbcomponent.setcolor(colorb)
Dim numberofcolors = 4
Dim outColor(numberofcolors + 1) As Color
outColor = coloracomponent.getcolorarray(coloracomponent, colorbcomponent, numberofcolors + 1)
ListBox1.Items.Clear()
Dim i = 1
For Each genfcolor As Color In outColor
Dim t As New TextBox()
Dim j = 100
‘ t.Location = New Point(t.Location.X + i, t.Location.Y + i)
t.ForeColor = genfcolor
t.Text = ColorTranslator.ToHtml(genfcolor)
‘Panel1.Controls.Add(t)
ListBox1.Items.Add(ColorTranslator.ToHtml(genfcolor))
‘ t.Location = New Point(ListBox1.Location.X + 100, ListBox1.Location.Y + i)
Me.Controls.Add(t)
t.Location = New Point(8 * 50, 4 + i * 30)
Me.Show()
i += 2
Next
End Sub
End Class
c# code
using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
public class Form1
{
private void Form1_Load(object sender, EventArgs e)
{
Color colora = default(Color);
colora = ColorTranslator.FromHtml(“#ff66ff”);
Color colorb = default(Color);
colorb = Color.Green;
ListBox1.Items.Add(ColorTranslator.ToHtml(colorb));
ListBox1.Items.Add(ColorTranslator.ToHtml(colora));
}
private class colorcomponent
{
int r;
int g;
int b;
int a;
public void setcolor(Color C)
{
this.r = C.R;
this.g = C.G;
this.b = C.B;
}
public Color getcolor(colorcomponent colorcomponent1)
{
return Color.FromArgb(colorcomponent1.r % 256, colorcomponent1.g % 256, colorcomponent1.b % 256);
}
public Color getcolorwithalpha(colorcomponent colorcomponent1, byte alpha)
{
return Color.FromArgb(alpha, Convert.ToByte(colorcomponent1.r % 256), Convert.ToByte(colorcomponent1.g % 256), Convert.ToByte(colorcomponent1.b % 256));
}
public Color[] getcolorarray(colorcomponent colorcomponent1, colorcomponent colorcomponent2, double numberofcolorsneededinbetween)
{
colorcomponent outcolorcomponent = new colorcomponent();
Color[] outColor = new Color[numberofcolorsneededinbetween + 1];
outColor(0) = getcolor(colorcomponent1);
if (numberofcolorsneededinbetween > 0) {
for (double i = 1; i <= numberofcolorsneededinbetween – 1; i++) {
if ((colorcomponent1.r – colorcomponent2.r != 0)) {
outcolorcomponent.r = (colorcomponent1.r) + (((-colorcomponent1.r + colorcomponent2.r) * i / (numberofcolorsneededinbetween)));
} else {
outcolorcomponent.r = (colorcomponent1.r);
}
if ((colorcomponent1.g – colorcomponent2.g != 0)) {
outcolorcomponent.g = (colorcomponent1.g) + (((-colorcomponent1.g + colorcomponent2.g) * i / (numberofcolorsneededinbetween)));
} else {
outcolorcomponent.g = (colorcomponent1.g);
}
if ((colorcomponent1.b – colorcomponent2.b != 0)) {
outcolorcomponent.b = (colorcomponent1.b) + (((-colorcomponent1.b + colorcomponent2.b) * i / (numberofcolorsneededinbetween)));
} else {
outcolorcomponent.b = (colorcomponent1.b);
}
outColor(i) = getcolor(outcolorcomponent);
}
}
outColor(numberofcolorsneededinbetween) = getcolor(colorcomponent2);
return outColor;
}
}
private void Button1_Click(object sender, EventArgs e)
{
Color colora = default(Color);
colora = ColorTranslator.FromHtml(“#ff66ff”);
Color colorb = default(Color);
colorb = Color.Green;
colorcomponent coloracomponent = new colorcomponent();
colorcomponent colorbcomponent = new colorcomponent();
coloracomponent.setcolor(colora);
colorbcomponent.setcolor(colorb);
dynamic numberofcolors = 4;
Color[] outColor = new Color[numberofcolors + 2];
outColor = coloracomponent.getcolorarray(coloracomponent, colorbcomponent, numberofcolors + 1);
ListBox1.Items.Clear();
dynamic i = 1;
foreach (Color genfcolor in outColor) {
TextBox t = new TextBox();
dynamic j = 100;
// t.Location = New Point(t.Location.X + i, t.Location.Y + i)
t.ForeColor = genfcolor;
t.Text = ColorTranslator.ToHtml(genfcolor);
//Panel1.Controls.Add(t)
ListBox1.Items.Add(ColorTranslator.ToHtml(genfcolor));
// t.Location = New Point(ListBox1.Location.X + 100, ListBox1.Location.Y + i)
this.Controls.Add(t);
t.Location = new Point(8 * 50, 4 + i * 30);
this.Show();
i += 2;
}
First of all Mockito can create mock data which can be integer long etc It cannot create right enum as enum has specific number of ordinal name value etc so if i have enum
public enum HttpMethod {
GET, POST, PUT, DELETE, HEAD, PATCH;
} so i have total 5 ordinal in enum HttpMethod but mockito does not know it .Mockito creates mock data and its null all the time and you will end up in passing a null value . So here is proposed solution that you randomize the ordinal and get a right enum which can be passed for other test
importstatic org.mockito.Mockito.mock;import java.util.Random;import org.junit.Test;import org.junit.runner.RunWith;import org.mockito.Matchers;import org.mockito.internal.util.reflection.Whitebox;import org.powermock.api.mockito.PowerMockito;import org.powermock.core.classloader.annotations.PrepareForTest;import org.powermock.modules.junit4.PowerMockRunner;import com.amazonaws.HttpMethod;//@Test(expected = {"LoadableBuilderTestGroup"})//@RunWith(PowerMockRunner.class)publicclass testjava {// private static final Class HttpMethod.getClass() = null;privateHttpMethod mockEnumerable;@Testpublicvoid setUpallpossible_value_of_enum (){for(int i=0;i<10;i++){String name;
mockEnumerable=Matchers.any(HttpMethod.class);if(mockEnumerable!=null){System.out.println(mockEnumerable.ordinal());System.out.println(mockEnumerable.name());System.out.println(mockEnumerable.name()+"mocking suceess");}else{//Randomize all possible value of enum Random rand =newRandom();int ordinal = rand.nextInt(HttpMethod.values().length);// 0-9. mockEnumerable=
mockEnumerable=HttpMethod.values()[ordinal];System.out.println(mockEnumerable.ordinal());System.out.println(mockEnumerable.name());}}}@Testpublicvoid setUpallpossible_value_of_enumwithintany (){for(int i=0;i<10;i++){String name;
mockEnumerable=Matchers.any(HttpMethod.class);if(mockEnumerable!=null){System.out.println(mockEnumerable.ordinal());System.out.println(mockEnumerable.name());System.out.println(mockEnumerable.name()+"mocking suceess");}else{int ordinal;//Randomize all possible value of enum Random rand =newRandom();int imatch =Matchers.anyInt();if( imatch>HttpMethod.values().length)
ordinal =0;else
ordinal = rand.nextInt(HttpMethod.values().length);// 0-9. mockEnumerable=
mockEnumerable=HttpMethod.values()[ordinal];System.out.println(mockEnumerable.ordinal());System.out.println(mockEnumerable.name());}}}}
Output : 0 GET 0 GET 5 PATCH 5 PATCH 4 HEAD 5 PATCH 3 DELETE 0 GET 4 HEAD 2 PUT
pre-signed URL is URL which is used to give access to person for some time with authentication token /Signature and expiry on.it . The user need not have the AWS console Sign in credentials .This URL has Following format query string with
Sometime Pre-Signed URL gives error downloading the file with below mentioned Message.
<Error><Code>SignatureDoesNotMatch</Code><Message>The request signature we calculated does not match the signature you provided. Check your key and signing method.</Message>
The error is when you send a presigned url which has been created for HTTP PUT to upload a file and you are trying to view the file via Browser .
URL are different for PUT .GET ,….other DELETE etc VERBS
generatePresignedUrlRequest.setMethod(HttpMethod.PUT); This Line has different HttpMethod verbs
So make sure the URL youa re using is for right Verb
To generate a URL for download via browser you have to comment this line
Aa We knoe pre-signed URL gives you access to the object identified in the URL, provided that the creator of the pre-signed URL has permissions to access that object.
A pre-signed URL can be made for HTTP PUT get or download via browser and all may have different urls
generatePresignedUrlRequest.setMethod(HttpMethod.PUT); This Line has different HttpMethod verbs
where PUT is used to upload file via url HTTP PUT method.
So Its not mandatory to upload an object to get a pre-signed url .
We can get pre-signed url for existing object also in S3 to send it to user to download files from S3 so that they can download file from browser .
It is Something similar to google drive where user shares a link and the link owner can see the File even he does not have google account. GOOGLE DRIVE get shareable link
Example code for generating pre-signed url for existing object also in S3
Create an instance of the AmazonS3 class.
Generate a pre-signed URL by executing the AmazonS3.generatePresignedUrl method.
You provide a bucket name, an object key, and an expiration date by creating an instance of the GeneratePresignedUrlRequest class. You don’t have to specify the HTTP verb PUT when creating this URL as you are not upload an object.
Anyone with the pre-signed URL can upload an object.
The upload creates an object or replaces any existing object with the same key that is specified in the pre-signed URL.
you can install explorer view to see s3 bucket and files
Go to explorer view by Show AWS explorer view in AWS toolbar icon
It will ask you for credential for aws console once you place those credentials you can choose your region
and see all your AWS resource
So here we are just talking about S3 but same can be use to create table, Query for Dynamodb also .
So right click on S3 node gives you menu to create new bucket Delete etc
now in this screenshot you can see i went to bucket screen
On click bucket
Developer can open contents of bucket in Open in bucket editor screen
We have another option to upload file
Just drag the file from desktop to the screen and you will see file is getting uploaded to s3 bucket which was mentioned in bucket editor screen
its asking for objectkey wich is filename in this context and it will upload a file
In java you can upload file via these 3 lines
System.out.println(“Uploading a new object to S3 from a file\n”);
s3.putObject(new PutObjectRequest(bucketName, key, SampleFile));
SampleFileis a File object
and
S3 is AmazonS3Client
AmazonS3 s3 = new AmazonS3Client(credentials);
Some code fragments to loop the s3 file and summary are mentioned below to do
the process in java
AWSCredentials credentials = null;
try {
credentials = new ProfileCredentialsProvider(“default”).getCredentials();
} catch (Exception e) {
throw new AmazonClientException(
“Cannot load the credentials from the credential profiles file. ” +
“Please make sure that your credentials file is at the correct ” +
“location (C:\\Users\\Jitender.Thakur\\.aws\\credentials), and is in valid format.”,
e);
}
AmazonS3 s3 = new AmazonS3Client(credentials);
Region usWest2 = Region.getRegion( Regions.US_WEST_2
);
s3.setRegion(usWest2);
To delete a bucket you have to delete all files in Bucket first .When bucket is Empty delete Bucket
Creating bucket with check for existing bucket as bucket should be globally unique
try {
credentials = new ProfileCredentialsProvider(“default”).getCredentials();
} catch (Exception e) {
throw new AmazonClientException(
“Cannot load the credentials from the credential profiles file. ” +
“Please make sure that your credentials file is at the correct ” +
“location (C:\\Users\\Jitender.Thakur\\.aws\\credentials), and is in valid format.”,
e);
}
AmazonS3 s3 = new AmazonS3Client(credentials);
Region usWest2 = Region.getRegion(Regions.US_WEST_2);
s3.setRegion(usWest2);
tx = new TransferManager(s3);
private void createAmazonS3Bucket() {
try {
if (tx.getAmazonS3Client().doesBucketExist(bucketName) == false) {
tx.getAmazonS3Client().createBucket(bucketName);
}
} catch (AmazonClientException ace) {
// JOptionPane.showMessageDialog(frame, “Unable to create a new Amazon S3 bucket: ” + ace.getMessage(),
// “Error Creating Bucket”, JOptionPane.ERROR_MESSAGE);
}
}
Logger in slf4j, could you explain and give explain on how to use it? (e.g. how to see where the log is)
So Like any logger library we have a configuration file where we place the locationof logs it can be DB text file Console out put DEbugger on statments
Logger in slf4j, could you explain and give explain on how to use it? (e.g. how to see where the log is)
The above will get your program compiled, but when you run it, you will see these output.
bash> java deng.Hello
SLF4J: Failed to load class “org.slf4j.impl.StaticLoggerBinder”.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
What it’s saying is that at runtime, you are missing the logging “implementation” (or the logger binding), so slf4j simply use a “NOP” implmentation, which does nothing. In order to see the output properly, you may try use an simple implementation that does not require any configuration at all! Just go back to your pom.xml and add the following:
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.7.5</version>
</dependency>
Now you see logging output on STDOUT with INFO level. This simple logger will default show any INFO level message or higher. In order to see DEBUG messages, you would need to pass in this System Property -Dorg.slf4j.simpleLogger.defaultLogLevel=DEBUG at your Java startup.
Using slf4j with Log4j logger
Now we can experiment and swap different logger implementations, but your application code can remain the same. All we need is to replace slf4j-simple with another popular logger implementation, such as the Log4j.
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.5</version>
</dependency>
Again, we must configure logging per implementation that we picked. In this case, we need an
src/main/resources/log4j.properties file for writing into file and stdout
# Root logger option
log4j.rootLogger=INFO, file, stdout
# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=C:\\logging.log
log4j.appender.file.MaxFileSize=10MB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
# Direct log messages to stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
Re-run your program, and you should see similar output.
Using slf4j with JDK logger
The JDK actually comes with a logger package, and you can replace pom.xml with this logger implementation.
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-jdk14</artifactId>
<version>1.7.5</version>
</dependency>
Now the configuration for JDK logging is a bit difficult to work with. Not only need a config file, such as src/main/resources/logging.properties, but you would also need to add a System properties -Djava.util.logging.config.file=logging.properties in order to have it pick it up. Here is an example to get you started:
.level=INFO
handlers=java.util.logging.ConsoleHandler
java.util.logging.ConsoleHandler.level=FINEST
deng.level=FINEST
Using slf4j with Logback logger
The logback logger implementation is a super dupa quality implementation. If you intend to write serious code that go into production, you may want to evaluate this option. Again modify your pom.xml to replace with this:
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.0.13</version>
</dependency>
Here is a sample of configuration src/main/resources/logback.xml to get things started.
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
<!-- encoders are assigned the type ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
<encoder>
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{5} - %msg%n
</pattern>
</encoder>
</appender>
<appender name="db" class="ch.qos.logback.classic.db.DBAppender">
<connectionSource
class="ch.qos.logback.core.db.DriverManagerConnectionSource">
<driverClass>org.postgresql.Driver</driverClass>
<url>jdbc:postgresql://localhost:5432/simple</url>
<user>postgres</user>
<password>root</password> <!-- no password -->
</connectionSource>
</appender>
<!-- the level of the root level is set to DEBUG by default. -->
<root level="TRACE">
<appender-ref ref="stdout" />
<appender-ref ref="db" />
</root>
</configuration>
As seen here, I have created two appenders – a console appender and a database appender.
The database appender here requires the JDBC driver, the jdbc url and the db credentials. An additional property is the connectionSource which is actually the type of Connection wrapper that we would like to use. Logback provides a few options here and I went with the DriverManagerConnectionSource class.
The next step was to write a test class to test the code:
public class SampleTestDbAppender {
private static final Logger logger = LoggerFactory.getLogger(TestDbAppender.class);
public SampleTestDbAppender () {
logger.info("Class instance created at {}", DateFormat.getInstance().format(new Date()));
}
public void doTask() {
logger.trace("In test doTask");
logger.trace("doTask test complete");
}
public static void main(String[] args) {
logger.warn("Running test code...");
new TestDbAppender().doTask();
logger.debug("test Code execution complete.");
}
}
get script from here
https://github.com/qos-ch/logback/tree/master/logback-classic/src/main/resources/ch/qos/logback/classic/db/script
This resulted in three tables:
— Logback: the reliable, generic, fast and flexible logging framework.
— Copyright (C) 1999-2010, QOS.ch. All rights reserved.
—
— See http://logback.qos.ch/license.html for the applicable licensing
— conditions.
— This SQL script creates the required tables by ch.qos.logback.classic.db.DBAppender
—
— The event_id column type was recently changed from INT to DECIMAL(40)
