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JIRA and git : how to get a changelog automagically

formats
Posté le par Posté dans G33k, Programmes .

Install « jira » (a nodejs program) onto your CI server. This is a command line jira access.
Then change the parameters below in this script.

This script applies if you work using a pull Request system and version branching (for example if there are branches called release/x.x.x)

#!/bin/bash
#change the category here
JIRA_CATEGORY="CAT"
#change your project here
JIRA_PROJECT="PROJECT"
#write your JIRA_URL here
JIRA_URL="http://www.myjira.com/"
RELEASE_PREFIX="release"
PR_MERGE_COMMENT_PREFIX="Merged in"

BUG="\033[37;41m\u25BA\033[1;37;41mbug\033[0m\033[37;41m\u25C0\033[0m"
DOC="\033[37;44m\u25BA\033[1;37;44mdoc\033[0m\033[37;44m\u25C0\033[0m"
TEST="\033[37;42m\u25BA\033[1;37;42mtest\033[0m\033[37;42m\u25C0\033[0m"
OTHER=\033[37;46m\u25BA\033[1;30;46mother\033[0m\033[37;46m\u25C0\033[0m"
STORY="\033[37;45m\u25BA\033[1;37;45mstory\033[0m\033[37;45m\u25C0\033[0m"
FEATURE="\033[37;43m\u25BA\033[1;30;43mfeature\033[0m\033[37;43m\u25C0\033[0m"
JIRADESCR="~/.jiradescr"
SEP=";"

snapshotVersion (){
MILESTONE=$(echo $1 | cut -d'.' -f1);
MAJOR=$(echo $1 | cut -d'.' -f2);
MINOR=$(echo $1 | cut -d'.' -f3);

MINOR=$(expr $MINOR + 1)
NEXTVERSION=$MILESTONE.$MAJOR.$MINOR
echo $NEXTVERSION-SNAPSHOT
}

lastMerge (){
if [ -z "$(echo $1 | grep SNAPSHOT)" ];then
echo $(git rev-list origin/$(echo "$1") --merges | head -n 1)
fi
}

applyVersion (){
echo "$1 $2"
}

listVersions (){
VERSIONS="$(git for-each-ref --sort=-committerdate --format='%(refname:short)' | grep origin/$RELEASE_PREFIX | cut -d'/' -f3 | tac)"
VERSIONS="$(echo "$VERSIONS")"
echo "$VERSIONS"
snapshotVersion $(echo "$VERSIONS" | tail -n 1)
}

shiftList (){
echo "$1" | tr '\n' '-' | cut -d'-' -f2- | sed 's/-$//' | tr '-' '\n'
}

printType (){
TYPE=$1
if [ "$TYPE" == "Bogue" ] || [ "$TYPE" == "Bug" ];then
echo -n "$BUG"
elif [ "$TYPE" == "Specification" ];then
echo -n "$DOC"
elif [ "$TYPE" == "Other task" ];then
echo -n "$OTHER"
elif [ "$TYPE" == "Acceptance Test" ];then
echo -n "$TEST"
elif [ "$TYPE" == "Récit" ] || [ "$TYPE" == "Technical Story" ];then
echo -n "$STORY"
elif [ "$TYPE" == "Implementation" ] || [ "$TYPE" == "Development" ];then
echo -n "$FEATURE"
else
echo -n "$TYPE"
fi
}

changelog () {
VERSIONS=$(listVersions)
LAST=$(echo "$VERSIONS" | head -n 1)
echo "$VERSIONS" | while read VERSION;do
if [ "$VERSION" != "$LAST" ]; then
VERSIONMERGE=$(lastMerge release/$VERSION)
LASTMERGE=$(lastMerge release/$LAST)
echo -e "\033[1;4m$VERSION :\033[0m"
TICKETS="$(git --no-pager log --oneline --decorate --color $LASTMERGE..$VERSIONMERGE | grep $PR_MERGE_COMMENT_PREFIX | grep -o "\($JIRA_CATEGORY$JIRA_PROJECT\+-[0-9]\+\)" | sort | uniq)"
if [ -z "$(echo $TICKETS)" ];then
echo "Nothing"
fi
echo "$TICKETS" | while read JIRA; do
if [ ! -z "$(echo $JIRA)" ];then
LINE="$(grep $JIRA $JIRADESCR)"
if [ ! -z "$LINE" ];then
TYPE="$(echo "$LINE" | cut -d"$SEP" -f2)"
TITLE="$(echo "$LINE" | cut -d"$SEP" -f3)"
else
DESCRIBE=$(jilla describe $JIRA)
TITLE=$(echo "$DESCRIBE" | grep "^Summary: " | head -n 1 | sed "s/^Summary: //")
TYPE=$(echo $(echo "$DESCRIBE" | grep 'Type:' | head -n 1 | cut -d':' -f2))
echo "$JIRA$SEP$TYPE$SEP$TITLE" >> $JIRADESCR
fi
printType "$TYPE"
echo -n " $TITLE "
echo -n "($JIRA_URL"
echo -n $JIRA
echo ") "
fi
done
LAST=$VERSION
fi
done
}

echo "$(changelog)"

You will get this display in a console :
changelog

You can integrate that into your webApp or e-mail it at each release date.

Clever use of Silk DI (or Guice) with really simple on-demand new instances

formats
Posté le par Posté dans G33k, Programmes .

if you write this

static class $ {
public static <T> T create (final Class type, final Object... additionalParameters) {
return ApplicationInjector.instantiate (type, additionalParameters);
}

public static <T> T select (final Class type) {
return ApplicationInjector.getBean (type);
}

private $ () {

}
}

then you will feel how simple a Dependency Injector can be ! Think of some brillant frameworks like JQuery or prototype in JS. They rely on the fact that the most used features must be call with the least effort possible.
(for example in jquery, if you want a link markup inside a div, do this : $(« div > a »))

With this simple code, you can have an instance of any impl-dependant bean.
If you want to instantiate an AudioFormatParser (an impl-dependant bean), just do that :

AudioFormatParser parser = $.select (AudioFormatParser.class);

If you want to create an instance of an object using some beans, but not injected itself, just do that :

MyService service = $.create (MyService.class, "myarg1", 1, true);

This will actually use any constructor with the enclosed parameters, plus the beans needed to achieve the instantiation.
For example, the code above will be able to call this constructor without any other pain :

public MyService (AudioFormatParser audioFormatParser, AComplicatedRepository repository, String arg1, int arg2, boolean arg3)

Just have a look at my current project using this facility : https://github.com/libetl/soundtransform

You can also see the classes $ and ApplicationInjector that provide this idea : https://github.com/libetl/soundtransform/blob/androidIntegration/src/main/java/org/toilelibre/libe/soundtransform/ioc/ApplicationInjector.java

fongo : a really simple mongorestore in only 30 SLOC !

formats
Posté le par Posté dans G33k, Programmes .

If you use a fake mongodb like ‘fongo’ and you want to import a zip dump into fongo, here is a way to do that :

public void restoreDump(String filePath) throws RestoreFailedException {
ZipFile zipFile;
try {
zipFile = new ZipFile(filePath);
} catch (IOException e1) {
throw new RestoreFailedException (e1);
}
Enumeration< ? extends ZipArchiveEntry> entries = zipFile.getEntries();
DB currentDB = null;
while (entries.hasMoreElements()) {
ZipArchiveEntry entry = entries.nextElement();
if ("dump/".equals(entry.getName())) {
continue;
}
if (entry.isDirectory()) {
String[] pathParts = entry.getName().split ("/");
String dbName = pathParts [pathParts.length - 1];
currentDB = FongoDBTest.fongo.getMongo ().getDB(dbName);
} else if (entry.getName().endsWith(".bson")) {
String currentCollectionName = entry.getName().substring(
entry.getName().lastIndexOf('/') + 1,
entry.getName().lastIndexOf(".bson"));
DBCollection currentCollection = currentDB.createCollection(
currentCollectionName, new BasicDBObject());
BasicBSONDecoder bsonDecoder = new BasicBSONDecoder();

BSONObject bson;
try {
InputStream in = zipFile.getInputStream(entry);
while ((bson = bsonDecoder.readObject(in)) != null){
BasicDBObject dbObject = new BasicDBObject();
dbObject.putAll(bson);
currentCollection.insert(dbObject);
}

} catch (IOException e) {
//I think there will be some padding that will throw this exception anyway.
}
}
}
try {
zipFile.close ();
} catch (IOException e) {
throw new RestoreFailedException (e1);
}
}

The fongo object can be instantiated using this lines of code :

LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();

//set debug logs off
lc.getLogger (FongoDBCollection.class).setLevel (Level.ERROR);
lc.getLogger (ExpressionParser.class).setLevel (Level.ERROR);
lc.getLogger (FongoDB.class).setLevel (Level.ERROR);

FongoDBTest.fongo = new Fongo ("unit test server");

Then you will not print out a big amount of useless debug logs.

Netflix glisten : a high level impl of the AWS SWF task oriented architecture

formats
Posté le par Posté dans G33k, Programmes .

Hello,

Today, I will show you a piece of code to help you implement a solution under Netflix glisten.

This example launches a rocket, processing all the required tasks before firing the engines.

This framework can let you write scalable and fault tolerant workflow programs without writing complex software rules.

For example, launching a rocket should be as simple, intuitive as follows :

def preheatedEngines = getEnginesOperations().activities.preheating(preheatingTime)
getEvacuateOperations().activities.announceImmediateLaunch()
waitFor(getEvacuateOperations().activities.floorsCleared()){
getCloseOperations().activities.closeSound()
for (floor in 1..rocketFloors){
for (door in 1..doorsPerFloor){
if (getCloseOperations().activities.floorDoorsReadyToClose(floor, door)){
getCloseOperations().activities.closeDoor(floor, door)
}else{
throw new RocketLaunchException ()
}
}
}

waitFor(preheatedEngines){
for (engine in 1..engineNumber){
getEnginesOperations().activities.startEngine(engine)
}

getEnginesOperations().activities.throttle()
Promise.Void()
}
}

You can find that program enclosed. Good luck

Junit : changer la valeur d’un champ ‘private final’ en toute impunité

formats
Posté le par Posté dans G33k, Programmes .

Si dans une classe A, vous avez un champ private final String foo,
et que dans une classe TestA, vous cherchez à la changer après avoir fait un new, normalement c’est impossible…

Normalement, parce qu’il existe toujours une astuce pour contourner cela :

A Ainstance = new A ();
String newValue = "New value here !"
try {
Field fooField = A.class.getDeclaredField("foo");
fooField.setAccessible(true);//ignore private here
Field fieldModifiers = Field.class.getDeclaredField("modifiers");
fieldModifiers.setAccessible(true);
//Remove private and final here
fieldModifiers.setInt(fooField, fooField.getModifiers() & ~Modifier.FINAL & ~Modifier.PRIVATE);
fooField.set(Ainstance, newValue);
} catch (NoSuchFieldException e1) {
e1.printStackTrace();
} catch (SecurityException e1) {
e1.printStackTrace();
} catch (IllegalArgumentException e1) {
e1.printStackTrace();
} catch (IllegalAccessException e1) {
e1.printStackTrace();
}

Une autre possibilité est de toujours passer par les getters pour récupérer la valeur d’un champ et de mocker la méthode getFoo (soit par une sous-classe si A n’est pas final, soit avec un framework genre Mockito)

Closed for maintenance

formats
Posté le par Posté dans G33k, Programmes .

Pas d’article ces derniers jours à cause d’un plantage des serveurs toile-libre.org

Je vais devoir réfléchir à changer d’hébergement pour ce blog…

Sinon, quoi de neuf ? un bout de code pour trouver la fréquence fondamentale (f0) d’un son en Java, à un instant t :

Soit la classe FrequenciesState : un array de nombres Complexes + un entier maxFrequency == sampleRate

public static int f0 (FrequenciesState fs, int hpsfactor) {
return FrequenciesHelper
.freqFromSampleRate (FrequenciesHelper.getMaxIndex (FrequenciesHelper.hps (fs, hpsfactor), 0, fs.getState ().length / hpsfactor), fs.getState ().length * 2 / hpsfactor);
}

public static int freqFromSampleRate (int freq, int sampleRate) {
return (int) (freq * MAX_EAR_FREQUENCY / (sampleRate * 2.0));
}

public static int getMaxIndex (FrequenciesState fs, int low, int high) {
double max = 0;
int maxIndex = 0;
int reallow = low == 0 ? 1 : low;
int realhigh = Math.min (high, fs.getState ().length);
for (int i = reallow; i < realhigh; i++) {
if (max < fs.getState () [i].abs ()) {
max = fs.getState () [i].abs ();
maxIndex = i;
}
}
return maxIndex;
}
private static FrequenciesState hps (FrequenciesState fs, int factor) {
int max = fs.getState ().length / factor;
Complex [] result = new Complex [max];
for (int i = 0; i < max; i++) {
double val = fs.getState () [i].abs ();
for (int j = 1; j < factor; j++) {
if (i * factor < fs.getMaxfrequency () / 2 && i * factor < fs.getState ().length) {
val *= fs.getState () [i * factor].abs ();
}
}
result [i] = new Complex (val);
}
return new FrequenciesState (result, fs.getMaxfrequency () / factor);
}

Le chateau de la belle au papier dormant…

Union-merge of two files

formats
Posté le par Posté dans G33k .

So you want to merge two files together ? But maybe you would like the content of both files into one ?
So you want to do an union merge of two files ?

Then it is now possible with this small script to use along with the patch/diffs commands
The usage is « patchWithoutDelete file1 file2 fileOutput ».

#!/bin/bash
INPUT1=$1
INPUT2=$2
OUTPUT=$3
cp $INPUT1 $OUTPUT
CHANGES="$(diff -u $INPUT1 $INPUT2 | sed 's/^-\(.*\)$/\1/g')"
HEADER1=""
HEADER2=""
CURRENT=""
SAVED=""
NBLINES=$(echo "$CHANGES" | wc -l)
COUNTPLUS=0
NB=0
PATCHFILE=""
for i in $(seq $NBLINES);do
LINE="$(echo "$CHANGES" | head -n $i | tail -n 1)"
if [ -z "$HEADER1" ];then
HEADER1="$LINE"
PATCHFILE="$PATCHFILE$HEADER1\n"
elif [ -z "$HEADER2" ];then
HEADER2="$LINE"
PATCHFILE="$PATCHFILE$HEADER2\n"
elif [ -z "$CURRENT" ];then
CURRENT="$LINE"
else
if [ ! -z "$(echo "$LINE" | grep '^@@')" ];then
NUMBERBEFORE=$(expr $NB - $COUNTPLUS)
PATCHFILE="$PATCHFILE$(echo "$CURRENT" | sed "s/^@@ -\([0-9]\+\),\([0-9]\+\) +\([0-9]\+\),\([0-9]\+\)/@@ -\1,$NUMBERBEFORE +\3,$NB/g")\n$SAVED"
CURRENT="$LINE"
SAVED=""
COUNTPLUS=0
NB=0
else
if [ ! -z "$(echo "$LINE" | grep '^+')" ];then
COUNTPLUS=$(expr $COUNTPLUS + 1)
fi
NB=$(expr $NB + 1)
SAVED="$SAVED$LINE\n"
fi
fi
done
echo -e "$PATCHFILE" | patch $OUTPUT

8bit-ator

formats
Posté le par Posté dans G33k, Images .

Sur mon repository github soundtransform, je crois avoir obtenu (par accident) un convertisseur musique vers 8bit.

J’étais en train de chercher comment remodeler un son en le sous échantillonnant pour en supprimer ses pics et ses bruits parasites. En écoutant le résultat de ma transformation, j’ai eu l’étrange impression d’écouter du son de console NES.

Voici le son avant : Tiefschwarz – On Up
Voici le son après : 8bitschwarz – On Up

Votre image en flat design

formats
Posté le par Posté dans Images .

Finis les dégradés obscurs, des couleurs vives et égayées
Place à la clareté, finis les logos sans contrastes.
Vive l’efficacité, des traits simples plus que des courbes complexes.
Plus de perspective étrange, plus de 3d dérangeante, du FLAT !

Le flat design vous semble-t-il pas encore accessible par vous même ? J’ai une petite astuce pour vous aider.

Vous pouvez (peut être) transformer votre design en « flat » par une opération de conversion légère !

Téléchargez ma palette flat colors et peignez une nouvelle vie à vos images ! (vous pouvez l’importer dans gimp)

Icône, old style

Logo beau mais old régime

Flat colors mais 3D...

Flat colors mais 3D…

réel Flat design !

réel Flat design !

Réel Flat design sans ombres

Réel Flat design sans ombres

 

Sur la finition je suis moyen mais je suis sûr que vous pourriez faire des merveilles avec ma palette. Alors à vos pinceaux.
(Le logo utilisé est le thème oxygen du logiciel konqueror)