diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b09ea64
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,44 @@
+# Generated files
+bin/
+gen/
+out/
+
+# Gradle files
+.gradle/
+gradle/
+build/
+build/*
+
+# Intellij
+*.iml
+.idea
+
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+elk/server/elasticsearch/data
+
+server/deploy/deploy_playbook\.retry
+jobs/deploy/deploy_playbook\.retry
+
+application-local.properties
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..ecbd124
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,63 @@
+buildscript {
+
+    ext {
+        kotlinVersion = '1.3.71'
+        springBootVersion = '2.2.5.RELEASE'
+    }
+
+    repositories {
+        mavenCentral()
+        maven { url "https://plugins.gradle.org/m2/" }
+    }
+
+    dependencies {
+        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlinVersion}")
+        classpath("org.jetbrains.kotlin:kotlin-allopen:${kotlinVersion}")
+        classpath("org.jetbrains.kotlin:kotlin-noarg:${kotlinVersion}")
+    }
+
+}
+
+plugins {
+    id 'org.springframework.boot' version '2.2.5.RELEASE' apply false
+}
+
+allprojects {
+    group 'ru.touchin'
+}
+
+subprojects {
+    repositories {
+        mavenCentral()
+        maven { url "https://plugins.gradle.org/m2/" }
+    }
+
+    apply plugin: 'kotlin'
+
+    sourceCompatibility = 1.8
+
+    compileKotlin {
+        kotlinOptions {
+            freeCompilerArgs = ["-Xjsr305=strict"]
+            jvmTarget = "1.8"
+        }
+    }
+
+    compileTestKotlin {
+        kotlinOptions {
+            freeCompilerArgs = ["-Xjsr305=strict"]
+            jvmTarget = "1.8"
+        }
+    }
+
+    apply plugin: 'io.spring.dependency-management'
+
+    dependencyManagement {
+        imports {
+            mavenBom("org.springframework.boot:spring-boot-dependencies:${springBootVersion}") {
+                bomProperty("kotlin.version", "${kotlinVersion}")
+            }
+        }
+    }
+}
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 0000000..29e08e8
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1 @@
+kotlin.code.style=official
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..87b738c
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..44e7c4d
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.2.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000..af6708f
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..6d57edc
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..5971c92
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1,5 @@
+rootProject.name = System.getProperty("rootProjectName")
+        ?: 'Backend-common'
+
+include 'utils'
+include 'test-utils'
diff --git a/test-utils/build.gradle b/test-utils/build.gradle
new file mode 100644
index 0000000..32bb487
--- /dev/null
+++ b/test-utils/build.gradle
@@ -0,0 +1,19 @@
+plugins {
+    id 'kotlin'
+    id 'kotlin-spring'
+    id 'kotlin-jpa'
+    id 'eclipse'
+    id 'org.springframework.boot' apply false
+}
+
+repositories {
+    mavenCentral()
+    maven { url "https://plugins.gradle.org/m2/" }
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib"
+    compileOnly "org.springframework.data:spring-data-commons"
+    compileOnly "org.junit.jupiter:junit-jupiter"
+    compileOnly "org.mockito:mockito-core"
+}
diff --git a/test-utils/src/main/kotlin/ru/touchinstinct/utils/test/mockito/AssertUtils.kt b/test-utils/src/main/kotlin/ru/touchinstinct/utils/test/mockito/AssertUtils.kt
new file mode 100644
index 0000000..6654e70
--- /dev/null
+++ b/test-utils/src/main/kotlin/ru/touchinstinct/utils/test/mockito/AssertUtils.kt
@@ -0,0 +1,19 @@
+package ru.touchinstinct.utils.test.mockito
+
+import org.junit.jupiter.api.fail
+
+object AssertUtils {
+
+    fun <T> assertContains(container: Iterable<T>, element: T) {
+        if (element !in container) {
+            fail("Not contains: \nElement: $element \nContainer: $container")
+        }
+    }
+
+    fun <T> assertContains(container: Iterable<T>, predicate: (T) -> Boolean) {
+        if (container.none(predicate)) {
+            fail("Not contains: \nContainer: $container")
+        }
+    }
+
+}
diff --git a/test-utils/src/main/kotlin/ru/touchinstinct/utils/test/mockito/MockitoUtils.kt b/test-utils/src/main/kotlin/ru/touchinstinct/utils/test/mockito/MockitoUtils.kt
new file mode 100644
index 0000000..97d768d
--- /dev/null
+++ b/test-utils/src/main/kotlin/ru/touchinstinct/utils/test/mockito/MockitoUtils.kt
@@ -0,0 +1,30 @@
+package ru.touchinstinct.utils.test.mockito
+
+import org.mockito.ArgumentMatchers
+import org.mockito.ArgumentMatchers.booleanThat
+import org.mockito.ArgumentMatchers.longThat
+import org.mockito.Mockito
+
+object MockitoUtils {
+
+    fun <T> anyx(matcher: ((T) -> Boolean)? = null): T {
+
+        @Suppress("UNCHECKED_CAST")
+        return if (matcher == null) {
+            ArgumentMatchers.any() ?: (null as T)
+        } else {
+            Mockito.argThat(matcher) ?: (null as T)
+        }
+    }
+
+    fun <T> anyx(sample: T): T = anyx { it == sample }
+
+    fun trueBoolean(): Boolean = booleanThat { it }
+
+    fun anyLong(matcher: ((Long) -> Boolean)? = { true }): Long = longThat(matcher)
+
+    fun <T> anyType(type: Class<T>): T = Mockito.any<T>(type)
+
+    inline fun <reified T> mock(clazz: Class<T> = T::class.java): T = Mockito.mock(clazz)
+
+}
diff --git a/test-utils/src/main/kotlin/ru/touchinstinct/utils/test/mockito/XmlTestUtils.kt b/test-utils/src/main/kotlin/ru/touchinstinct/utils/test/mockito/XmlTestUtils.kt
new file mode 100644
index 0000000..855c8e4
--- /dev/null
+++ b/test-utils/src/main/kotlin/ru/touchinstinct/utils/test/mockito/XmlTestUtils.kt
@@ -0,0 +1,9 @@
+package ru.touchinstinct.utils.test.mockito
+
+import java.io.StringWriter
+import javax.xml.bind.JAXBContext
+
+fun <T : Any> transformToXmlString(obj: T): String = StringWriter().let { stringWriter ->
+    JAXBContext.newInstance(obj::class.java).createMarshaller().marshal(obj, stringWriter)
+    stringWriter.toString()
+}
diff --git a/test-utils/src/main/kotlin/ru/touchinstinct/utils/test/spring/data/MockRepository.kt b/test-utils/src/main/kotlin/ru/touchinstinct/utils/test/spring/data/MockRepository.kt
new file mode 100644
index 0000000..d511c12
--- /dev/null
+++ b/test-utils/src/main/kotlin/ru/touchinstinct/utils/test/spring/data/MockRepository.kt
@@ -0,0 +1,144 @@
+package ru.touchinstinct.utils.test.spring.data
+
+import org.springframework.data.repository.CrudRepository
+import ru.touchinstinct.utils.test.mockito.MockitoUtils.anyx
+import ru.touchinstinct.utils.test.mockito.MockitoUtils.mock
+import java.lang.reflect.Field
+import java.util.Optional
+import java.util.UUID
+import java.util.concurrent.ThreadLocalRandom
+import kotlin.math.absoluteValue
+import org.mockito.Mockito.`when` as on
+
+/**
+ * This class is used to set up mock of repository
+ **/
+class MockRepository<R : CrudRepository<T, ID>, T : Any, ID>(
+        val mock: R, // repository mock
+        private val entities: MutableList<T> = ArrayList(),
+        private val idExtractor: ((T) -> ID?)? = null
+) {
+
+    companion object {
+        @Deprecated("idExtractor is no more required", ReplaceWith("MockRepository.create()"))
+        inline fun <reified R : CrudRepository<T, ID>, reified T : Any, reified ID> mockRepository(
+                noinline idExtractor: (T) -> ID?
+        ): R = MockRepository.create()
+
+        @Deprecated("idExtractor is no more required", ReplaceWith("MockRepository.create(settings)"))
+        inline fun <reified R : CrudRepository<T, ID>, reified T : Any, reified ID> mockRepository(
+                noinline idExtractor: (T) -> ID?,
+                noinline settings: (R, MutableList<T>) -> Unit
+        ): R = MockRepository.create(settings)
+
+        inline fun <reified R : CrudRepository<T, ID>, reified T : Any, reified ID> create(
+                noinline settings: (R, MutableList<T>) -> Unit
+        ): R {
+            val entities = ArrayList<T>()
+
+            return MockRepository(mock<R>(), entities).mock
+                    .also { settings(it, entities) }
+        }
+
+        inline fun <reified R : CrudRepository<T, ID>, reified T : Any, reified ID> create(): R {
+            val entities = ArrayList<T>()
+
+            return MockRepository(mock<R>(), entities).mock
+        }
+
+    }
+
+    init {
+        init()
+    }
+
+    private fun init() {
+        on(mock.findAll()).thenAnswer {
+            entities
+        }
+
+        on(mock.save(anyx<T>())).thenAnswer { it ->
+            save(it.getArgument(0))
+        }
+
+        on(mock.saveAll(anyx<List<T>>())).thenAnswer { it ->
+            saveAll(it.getArgument(0))
+        }
+
+        // 'findById' method does not check if id is unique.
+        on(mock.findById(anyx())).thenAnswer { it ->
+            findById(it.getArgument(0))
+        }
+
+        // 'findById' method does not check if id is unique.
+        on(mock.deleteAll()).thenAnswer { reset() }
+
+        on(mock.delete(anyx())).thenAnswer { delete(it.getArgument(0)) }
+
+    }
+
+    private fun findById(id: ID): Optional<T> {
+
+        return Optional.ofNullable(entities.find { id(it) == id })
+    }
+
+    private fun save(argument: T): T {
+        val id = id(argument) ?: trySetId(argument)
+
+        entities.replaceAll { entity -> if (id(entity) == id) argument else entity }
+
+        if (entities.find { entity -> id(entity) == id } == null) {
+            entities.add(argument)
+        }
+
+        return argument
+    }
+
+    private fun saveAll(objects: List<T>): List<T> {
+
+        return objects.map { save(it) }
+    }
+
+    private fun delete(any: T) = entities.remove(any)
+
+    fun reset() {
+        entities.clear()
+    }
+
+    private fun idField(entity: T): Field {
+        val javaClass = (entity as Any).javaClass
+
+        val fields = javaClass.declaredFields.toSet() + javaClass.superclass.declaredFields.toSet()
+
+        val idFieldOrNull = fields
+                .firstOrNull {
+                    it.annotations.any { annotation -> annotation.annotationClass.simpleName == "Id" }
+                }
+                ?.also { it.isAccessible = true }
+
+        return idFieldOrNull
+                ?: throw IllegalStateException("Type ${javaClass.canonicalName} has no field with @Id annotation.\n" +
+                        "Fields: ${fields.map { it.name }}")
+    }
+
+    private fun id(entity: T): ID {
+        val idField = idField(entity)
+
+        @Suppress("UNCHECKED_CAST")
+        return idField.get(entity) as ID
+    }
+
+    private fun trySetId(entity: T): ID = idField(entity).let { idField ->
+        val id = when (idField.type) {
+            java.lang.String::class.java, String::class.java -> UUID.randomUUID().toString()
+            java.lang.Long::class.java, Long::class.java -> ThreadLocalRandom.current().nextLong().absoluteValue
+            else -> throw IllegalAccessException("Could not generate id of type ${idField.type.canonicalName}")
+        }
+
+        idField.set(entity, id)
+
+        @Suppress("UNCHECKED_CAST")
+        id as ID
+    }
+
+}
diff --git a/utils/build.gradle b/utils/build.gradle
new file mode 100644
index 0000000..c9a8bef
--- /dev/null
+++ b/utils/build.gradle
@@ -0,0 +1,17 @@
+plugins {
+    id 'kotlin'
+    id 'eclipse'
+    id 'io.spring.dependency-management'
+    id 'org.springframework.boot' apply false
+}
+
+repositories {
+    mavenCentral()
+    maven { url "https://plugins.gradle.org/m2/" }
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib"
+    compileOnly "org.springframework.data:spring-data-commons"
+    compileOnly "io.projectreactor.kotlin:reactor-kotlin-extensions"
+}
diff --git a/utils/src/main/kotlin/ru/touchinstinct/utils/CollectionUtils.kt b/utils/src/main/kotlin/ru/touchinstinct/utils/CollectionUtils.kt
new file mode 100644
index 0000000..e8c1bea
--- /dev/null
+++ b/utils/src/main/kotlin/ru/touchinstinct/utils/CollectionUtils.kt
@@ -0,0 +1,6 @@
+package ru.touchinstinct.utils
+
+import java.math.BigDecimal
+
+inline fun <T> Iterable<T>.sumBy(selector: (T) -> BigDecimal) =
+    fold(BigDecimal.ZERO) { accumulator, element -> accumulator + selector(element) }
diff --git a/utils/src/main/kotlin/ru/touchinstinct/utils/CommonUtils.kt b/utils/src/main/kotlin/ru/touchinstinct/utils/CommonUtils.kt
new file mode 100644
index 0000000..35e3ce3
--- /dev/null
+++ b/utils/src/main/kotlin/ru/touchinstinct/utils/CommonUtils.kt
@@ -0,0 +1,15 @@
+package ru.touchinstinct.utils
+
+import org.springframework.core.io.ClassPathResource
+import java.io.InputStream
+import java.math.BigDecimal
+import java.util.Optional
+
+fun getInputStreamOfResourceFile(fileName: String): InputStream = ClassPathResource(fileName).inputStream
+
+fun getResourceAsString(filename: String): String = getInputStreamOfResourceFile(filename)
+    .use { String(it.readBytes()) }
+
+fun <T> Optional<T>.getOrNull(): T? = takeIf { it.isPresent }?.get()
+
+fun BigDecimal.equalTo(number: BigDecimal): Boolean = compareTo(number) == 0
diff --git a/utils/src/main/kotlin/ru/touchinstinct/utils/DaoUtils.kt b/utils/src/main/kotlin/ru/touchinstinct/utils/DaoUtils.kt
new file mode 100644
index 0000000..245da39
--- /dev/null
+++ b/utils/src/main/kotlin/ru/touchinstinct/utils/DaoUtils.kt
@@ -0,0 +1,7 @@
+package ru.touchinstinct.utils
+
+const val SKIP_LOCKED_PARAMETER = "javax.persistence.lock.timeout"
+/**
+ * Const value which is used for 'SKIP LOCKED' in 'SELECT ... FOR UPDATE' query
+ */
+const val SKIP_LOCKED_VALUE = "-2"
diff --git a/utils/src/main/kotlin/ru/touchinstinct/utils/DateUtils.kt b/utils/src/main/kotlin/ru/touchinstinct/utils/DateUtils.kt
new file mode 100644
index 0000000..b1c211a
--- /dev/null
+++ b/utils/src/main/kotlin/ru/touchinstinct/utils/DateUtils.kt
@@ -0,0 +1,38 @@
+package ru.touchinstinct.utils
+
+import java.time.Duration
+import java.time.LocalDate
+import java.time.LocalDateTime
+import java.time.ZoneId
+import java.time.ZonedDateTime
+import java.util.TimeZone
+
+val MOSCOW_ZONE_ID: ZoneId = TimeZone.getTimeZone("Europe/Moscow").toZoneId()
+
+fun ZonedDateTime.isExpired(duration: Duration) = this.isExpired(ZonedDateTime.now().minus(duration))
+
+fun ZonedDateTime.isExpired(currentDate: ZonedDateTime = ZonedDateTime.now()) = this.isBefore(currentDate)
+
+fun ZonedDateTime.isNotExpired(duration: Duration) = !this.isExpired(duration)
+
+fun ZonedDateTime.isNotExpired(currentDate: ZonedDateTime = ZonedDateTime.now()) = !this.isExpired(currentDate)
+
+fun ZonedDateTime.equals(arg: ZonedDateTime, maxDiff: Duration) =
+    Duration.between(this, arg) <= maxDiff
+
+fun LocalDateTime.isExpired(currentDate: LocalDateTime = LocalDateTime.now()) = this.isBefore(currentDate)
+
+fun LocalDateTime.isExpired(duration: Duration) = this.isBefore(LocalDateTime.now().minus(duration))
+
+fun dateMin(date1: LocalDate, date2: LocalDate?): LocalDate =
+    if (date2 == null || date2.isAfter(date1)) date1 else date2
+
+fun LocalDate.toZonedDateTime(): ZonedDateTime = atStartOfDay(MOSCOW_ZONE_ID)
+
+fun createLocalDate(): LocalDate = LocalDate.now()
+
+fun createLocalDateAtStartOfYear(): LocalDate = createLocalDate().withDayOfYear(1)
+
+fun LocalDate.startOfWeek(): LocalDate = this.minusDays(this.dayOfWeek.ordinal.toLong())
+
+fun LocalDate.endOfWeek(): LocalDate = this.plusWeeks(1L).minusDays(this.dayOfWeek.ordinal.toLong() + 1L)
diff --git a/utils/src/main/kotlin/ru/touchinstinct/utils/Empty.kt b/utils/src/main/kotlin/ru/touchinstinct/utils/Empty.kt
new file mode 100644
index 0000000..8d64cda
--- /dev/null
+++ b/utils/src/main/kotlin/ru/touchinstinct/utils/Empty.kt
@@ -0,0 +1,3 @@
+package ru.touchinstinct.utils
+
+class Empty
diff --git a/utils/src/main/kotlin/ru/touchinstinct/utils/ReactorUtils.kt b/utils/src/main/kotlin/ru/touchinstinct/utils/ReactorUtils.kt
new file mode 100644
index 0000000..fddef9e
--- /dev/null
+++ b/utils/src/main/kotlin/ru/touchinstinct/utils/ReactorUtils.kt
@@ -0,0 +1,17 @@
+package ru.touchinstinct.utils
+
+import reactor.core.publisher.Mono
+import reactor.core.scheduler.Schedulers
+
+object ReactorUtils {
+
+    fun <T : Any?> blocking(block: () -> T): Mono<T> =
+        Mono.fromCallable(block).subscribeOn(Schedulers.elastic())
+
+}
+
+fun <T : Any?, Y : Any?> Mono<T>.mapElastic(block: (T) -> Y): Mono<Y> =
+    flatMap { argument ->
+        Mono.fromCallable { block(argument) }
+            .subscribeOn(Schedulers.elastic())
+    }
diff --git a/utils/src/main/kotlin/ru/touchinstinct/utils/RepositoryUtils.kt b/utils/src/main/kotlin/ru/touchinstinct/utils/RepositoryUtils.kt
new file mode 100644
index 0000000..35d582e
--- /dev/null
+++ b/utils/src/main/kotlin/ru/touchinstinct/utils/RepositoryUtils.kt
@@ -0,0 +1,19 @@
+package ru.touchinstinct.utils
+
+import org.springframework.data.repository.CrudRepository
+
+fun <T : Any, ID> CrudRepository<T, ID>.update(entity: T, updater: T.() -> Unit): T {
+
+    return save(entity.apply(updater))
+}
+
+fun <T : Any, ID> CrudRepository<T, ID>.upsert(entity: T, updater: (T) -> Unit): T {
+
+    return save(entity.apply(updater))
+}
+
+fun <T : Any, ID> T.upsertInto(repository: CrudRepository<T, ID>, updater: (T) -> Unit): T {
+
+    return repository.save(also(updater))
+}
+
diff --git a/utils/src/main/kotlin/ru/touchinstinct/utils/SoapUtils.kt b/utils/src/main/kotlin/ru/touchinstinct/utils/SoapUtils.kt
new file mode 100644
index 0000000..712a0b2
--- /dev/null
+++ b/utils/src/main/kotlin/ru/touchinstinct/utils/SoapUtils.kt
@@ -0,0 +1,12 @@
+package ru.touchinstinct.utils
+
+import org.w3c.dom.Node
+import javax.xml.bind.JAXBContext
+
+inline fun <reified T> unmarshalRequestFrom(xml: Node): T = unmarshalRequestFrom(xml, T::class.java)
+
+fun <T> unmarshalRequestFrom(xml: Node, clazz: Class<T>): T {
+    val jaxbUnmarshaller = JAXBContext.newInstance(clazz).createUnmarshaller()
+
+    return jaxbUnmarshaller.unmarshal(xml, clazz).value
+}
diff --git a/utils/src/main/kotlin/ru/touchinstinct/utils/StringUtils.kt b/utils/src/main/kotlin/ru/touchinstinct/utils/StringUtils.kt
new file mode 100644
index 0000000..ff49aac
--- /dev/null
+++ b/utils/src/main/kotlin/ru/touchinstinct/utils/StringUtils.kt
@@ -0,0 +1,128 @@
+package ru.touchinstinct.utils
+
+import org.jetbrains.annotations.Contract
+
+private val TRANSLITERATION_TABLE: Map<Char, String> = mapOf(
+    ' ' to " ",
+    'а' to "a",
+    'б' to "b",
+    'в' to "v",
+    'г' to "g",
+    'д' to "d",
+    'е' to "e",
+    'ё' to "e",
+    'ж' to "zh",
+    'з' to "z",
+    'и' to "i",
+    'й' to "y",
+    'к' to "k",
+    'л' to "l",
+    'м' to "m",
+    'н' to "n",
+    'о' to "o",
+    'п' to "p",
+    'р' to "r",
+    'с' to "s",
+    'т' to "t",
+    'у' to "u",
+    'ф' to "f",
+    'х' to "h",
+    'ц' to "ts",
+    'ч' to "ch",
+    'ш' to "sh",
+    'щ' to "sch",
+    'ъ' to "'",
+    'ы' to "i",
+    'ь' to "'",
+    'э' to "e",
+    'ю' to "ju",
+    'я' to "ja",
+    'А' to "A",
+    'Б' to "B",
+    'В' to "V",
+    'Г' to "G",
+    'Д' to "D",
+    'Е' to "E",
+    'Ё' to "E",
+    'Ж' to "Zh",
+    'З' to "Z",
+    'И' to "I",
+    'Й' to "Y",
+    'К' to "K",
+    'Л' to "L",
+    'М' to "M",
+    'Н' to "N",
+    'О' to "O",
+    'П' to "P",
+    'Р' to "R",
+    'С' to "S",
+    'Т' to "T",
+    'У' to "U",
+    'Ф' to "F",
+    'Х' to "H",
+    'Ц' to "Ts",
+    'Ч' to "Ch",
+    'Ш' to "Sh",
+    'Щ' to "Sch",
+    'Ъ' to "'",
+    'Ы' to "I",
+    'Ь' to "'",
+    'Э' to "E",
+    'Ю' to "Ju",
+    'Я' to "Ja"
+)
+
+object StringUtils {
+
+    @Contract("hello_world -> helloWorld; HeLlO_WORld -> helloWorld; HELLO_WORLD -> helloWorld", pure = true)
+    fun snakeCaseToCamelCase(string: String): String {
+        var nextUpperCase = false
+
+        return buildString {
+            for (char in string) {
+                when {
+                    char == '_' -> {
+                        nextUpperCase = true
+                    }
+
+                    nextUpperCase -> {
+                        this.append(char.toUpperCase())
+                        nextUpperCase = false
+                    }
+
+                    !nextUpperCase -> {
+                        this.append(char.toLowerCase())
+                    }
+                }
+            }
+        }
+    }
+
+}
+
+fun String.removeNonPrintableCharacters(): String {
+
+    return this
+        .transliterateCyrillic()
+        .replace("[\\p{Cntrl}&&[^\r\n\t]]".toRegex(), "")// erases all the ASCII control characters
+        .replace("\\p{C}".toRegex(), "")// removes non-printable characters from Unicode
+        .trim()
+}
+
+fun String.transliterateCyrillic(): String {
+    val builder = StringBuilder()
+
+    for (char in this) {
+        if (TRANSLITERATION_TABLE.containsKey(char)) {
+            builder.append(TRANSLITERATION_TABLE[char])
+        } else {
+            builder.append(char)
+        }
+    }
+
+    return builder.toString()
+}
+
+fun String?.orNullIfBlank(): String? = this?.takeIf { it.isNotBlank() }
+
+fun String?.orIfNullOrBlank(altValue: String): String = if (this.isNullOrBlank()) altValue else this
diff --git a/utils/src/main/kotlin/ru/touchinstinct/utils/XmlUtils.kt b/utils/src/main/kotlin/ru/touchinstinct/utils/XmlUtils.kt
new file mode 100644
index 0000000..5fe0591
--- /dev/null
+++ b/utils/src/main/kotlin/ru/touchinstinct/utils/XmlUtils.kt
@@ -0,0 +1,51 @@
+package ru.touchinstinct.utils
+
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+import org.w3c.dom.NodeList
+import java.io.ByteArrayOutputStream
+import javax.xml.parsers.DocumentBuilderFactory
+import javax.xml.transform.OutputKeys
+import javax.xml.transform.Source
+import javax.xml.transform.Transformer
+import javax.xml.transform.TransformerFactory
+import javax.xml.transform.dom.DOMSource
+import javax.xml.transform.stream.StreamResult
+
+private val XML_DOCUMENT_BUILDER_FACTORY: DocumentBuilderFactory =
+    DocumentBuilderFactory.newInstance().apply { isNamespaceAware = true }
+
+private val transformerFactory = TransformerFactory.newInstance()
+
+fun getXmlMinified(filename: String) = getResourceAsString(filename)
+    .replace(">(\\s+)<".toRegex(), "><")
+
+fun String.parseXmlDocument(): Document =
+    XML_DOCUMENT_BUILDER_FACTORY.newDocumentBuilder().parse(byteInputStream())
+
+fun Node.stringify(): String = DOMSource(this).stringify()
+
+fun Source.stringify(): String {
+    val streamOut = ByteArrayOutputStream()
+
+    getDefaultTransformer().transform(this, StreamResult(streamOut))
+
+    return streamOut.toString(Charsets.UTF_8.name())
+}
+
+fun NodeList.get(localName: String): Node? {
+    for (i in 0 until length) {
+        if (item(i).localName == localName) {
+
+            return item(i)
+        }
+    }
+
+    return null
+}
+
+private fun getDefaultTransformer(): Transformer =
+    transformerFactory.newTransformer().apply {
+        setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes")
+        setOutputProperty(OutputKeys.INDENT, "yes")
+    }