diff --git a/postgres/.gitignore b/postgres/.gitignore new file mode 100644 index 00000000..c426c32f --- /dev/null +++ b/postgres/.gitignore @@ -0,0 +1,36 @@ +.gradle +build/ +!gradle/wrapper/gradle-wrapper.jar +!**/src/main/**/build/ +!**/src/test/**/build/ + +### STS ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache +bin/ +!**/src/main/**/bin/ +!**/src/test/**/bin/ + +### IntelliJ IDEA ### +.idea +*.iws +*.iml +*.ipr +out/ +!**/src/main/**/out/ +!**/src/test/**/out/ + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ + +### VS Code ### +.vscode/ \ No newline at end of file diff --git a/postgres/README.md b/postgres/README.md new file mode 100644 index 00000000..cee64038 --- /dev/null +++ b/postgres/README.md @@ -0,0 +1,15 @@ +# Postgres sample for Ktor Server + +An application for creating, editing and deleting articles that uses Postgres database running on Docker image as a storage. + +## Steps + +1. Execute gradle task `databaseInstance` and wait until Docker Compose builds image and starts container + +2. Execute this command to run the sample: + +```bash +./gradlew run +``` + +Then, you can open [http://localhost:8080/](http://localhost:8080/) in a browser to create, edit, and delete articles. \ No newline at end of file diff --git a/postgres/build.gradle.kts b/postgres/build.gradle.kts new file mode 100644 index 00000000..4e1807ee --- /dev/null +++ b/postgres/build.gradle.kts @@ -0,0 +1,40 @@ +val kotlin_version: String by project +val logback_version: String by project + +plugins { + kotlin("jvm") version "1.8.10" + id("io.ktor.plugin") version "2.2.3" + id("org.jetbrains.kotlin.plugin.serialization") version "1.8.10" +} + +group = "com.example" +version = "0.0.1" +application { + mainClass.set("io.ktor.server.netty.EngineMain") + + val isDevelopment: Boolean = project.ext.has("development") + applicationDefaultJvmArgs = listOf("-Dio.ktor.development=$isDevelopment") +} + +repositories { + mavenCentral() +} + +dependencies { + implementation("io.ktor:ktor-server-core-jvm") + implementation("io.ktor:ktor-server-content-negotiation-jvm") + implementation("io.ktor:ktor-serialization-kotlinx-json-jvm") + implementation("io.ktor:ktor-server-netty-jvm") + implementation("ch.qos.logback:logback-classic:$logback_version") + implementation("io.ktor:ktor-server-config-yaml") + implementation("org.postgresql:postgresql:42.5.1") + testImplementation("io.ktor:ktor-server-tests-jvm") + testImplementation("org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version") +} + +tasks.register("databaseInstance") { + doLast { + val command = arrayOf("docker-compose", "up") + Runtime.getRuntime().exec(command) + } +} \ No newline at end of file diff --git a/postgres/docker-compose.yaml b/postgres/docker-compose.yaml new file mode 100644 index 00000000..f9626dfa --- /dev/null +++ b/postgres/docker-compose.yaml @@ -0,0 +1,9 @@ +version: '3' +services: + db: + image: postgres:13.2-alpine + ports: + - 5432:5432 + extends: + file: postgres.yaml + service: postgres diff --git a/postgres/gradle.properties b/postgres/gradle.properties new file mode 100644 index 00000000..97175db1 --- /dev/null +++ b/postgres/gradle.properties @@ -0,0 +1,3 @@ +kotlin_version=1.8.10 +logback_version=1.2.11 +kotlin.code.style=official diff --git a/postgres/gradle/wrapper/gradle-wrapper.jar b/postgres/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 00000000..7454180f Binary files /dev/null and b/postgres/gradle/wrapper/gradle-wrapper.jar differ diff --git a/postgres/gradle/wrapper/gradle-wrapper.properties b/postgres/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 00000000..ae04661e --- /dev/null +++ b/postgres/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,5 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/postgres/gradlew b/postgres/gradlew new file mode 100755 index 00000000..1b6c7873 --- /dev/null +++ b/postgres/gradlew @@ -0,0 +1,234 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +APP_NAME="Gradle" +APP_BASE_NAME=${0##*/} + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | 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" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/postgres/gradlew.bat b/postgres/gradlew.bat new file mode 100644 index 00000000..107acd32 --- /dev/null +++ b/postgres/gradlew.bat @@ -0,0 +1,89 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@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 Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@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" "-Xms64m" + +@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 execute + +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 execute + +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 + +: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 %* + +: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/postgres/postgres.yaml b/postgres/postgres.yaml new file mode 100644 index 00000000..88149a41 --- /dev/null +++ b/postgres/postgres.yaml @@ -0,0 +1,7 @@ +version: '3' +services: + postgres: + environment: + POSTGRES_USER: "user" + POSTGRES_PASSWORD: "password" + POSTGRES_DB: "articles" \ No newline at end of file diff --git a/postgres/settings.gradle.kts b/postgres/settings.gradle.kts new file mode 100644 index 00000000..4241f20b --- /dev/null +++ b/postgres/settings.gradle.kts @@ -0,0 +1 @@ +rootProject.name = "ktor-postgres" \ No newline at end of file diff --git a/postgres/src/main/kotlin/com/example/Application.kt b/postgres/src/main/kotlin/com/example/Application.kt new file mode 100644 index 00000000..d569d4ee --- /dev/null +++ b/postgres/src/main/kotlin/com/example/Application.kt @@ -0,0 +1,13 @@ +package com.example + +import io.ktor.server.application.* +import com.example.plugins.* + +fun main(args: Array): Unit = + io.ktor.server.netty.EngineMain.main(args) + +@Suppress("unused") // application.conf references the main function. This annotation prevents the IDE from marking it as unused. +fun Application.module() { + configureSerialization() + configureRouting(dbConnection = connectToPostgres(embedded = false)) +} diff --git a/postgres/src/main/kotlin/com/example/exceptions/DbElementInsertException.kt b/postgres/src/main/kotlin/com/example/exceptions/DbElementInsertException.kt new file mode 100644 index 00000000..2e637632 --- /dev/null +++ b/postgres/src/main/kotlin/com/example/exceptions/DbElementInsertException.kt @@ -0,0 +1,3 @@ +package com.example.exceptions + +class DbElementInsertException(message: String? = null, throwable: Throwable? = null) : Throwable(message, throwable) \ No newline at end of file diff --git a/postgres/src/main/kotlin/com/example/exceptions/DbElementNotFoundException.kt b/postgres/src/main/kotlin/com/example/exceptions/DbElementNotFoundException.kt new file mode 100644 index 00000000..56881186 --- /dev/null +++ b/postgres/src/main/kotlin/com/example/exceptions/DbElementNotFoundException.kt @@ -0,0 +1,3 @@ +package com.example.exceptions + +class DbElementNotFoundException(message: String? = null, throwable: Throwable? = null) : Throwable(message, throwable) \ No newline at end of file diff --git a/postgres/src/main/kotlin/com/example/models/Article.kt b/postgres/src/main/kotlin/com/example/models/Article.kt new file mode 100644 index 00000000..1cbc04d8 --- /dev/null +++ b/postgres/src/main/kotlin/com/example/models/Article.kt @@ -0,0 +1,6 @@ +package com.example.models + +import kotlinx.serialization.Serializable + +@Serializable +data class Article(val title: String, val body: String) diff --git a/postgres/src/main/kotlin/com/example/plugins/Routing.kt b/postgres/src/main/kotlin/com/example/plugins/Routing.kt new file mode 100644 index 00000000..17f4f819 --- /dev/null +++ b/postgres/src/main/kotlin/com/example/plugins/Routing.kt @@ -0,0 +1,76 @@ +package com.example.plugins + +import com.example.exceptions.DbElementInsertException +import com.example.exceptions.DbElementNotFoundException +import com.example.models.Article +import com.example.service.ArticleService +import io.ktor.http.* +import io.ktor.server.application.* +import io.ktor.server.config.yaml.* +import io.ktor.server.request.* +import io.ktor.server.response.* +import io.ktor.server.routing.* +import java.sql.* + +fun Application.configureRouting(dbConnection: Connection) { + val articleService = ArticleService(dbConnection) + routing { + // Create new Article + post("/articles") { + val article = call.receive
() + try { + val id = articleService.create(article) + call.respond(HttpStatusCode.Created, id) + } catch (cause: DbElementInsertException) { + call.respond(HttpStatusCode.InternalServerError) + } + } + // Read an Article + get("/articles/{id}") { + try { + val id = call.parameters["id"]?.toInt() ?: throw IllegalArgumentException("Invalid article ID") + val article = articleService.read(id) + call.respond(HttpStatusCode.OK, article) + } catch (cause: DbElementNotFoundException) { + call.respond(HttpStatusCode.NotFound) + } catch (cause: IllegalArgumentException) { + call.respond(HttpStatusCode.BadRequest) + } + } + // Update an Article + put("/articles/{id}") { + try { + val id = call.parameters["id"]?.toInt() ?: throw IllegalArgumentException("Invalid article ID") + val article = call.receive
() + articleService.update(id, article) + call.respond(HttpStatusCode.OK) + } catch (cause: IllegalArgumentException) { + call.respond(HttpStatusCode.BadRequest) + } + } + // Delete an Article + delete("/articles/{id}") { + try { + val id = call.parameters["id"]?.toInt() ?: throw IllegalArgumentException("Invalid article ID") + articleService.delete(id) + call.respond(HttpStatusCode.OK) + } catch (cause: IllegalArgumentException) { + call.respond(HttpStatusCode.BadRequest) + } + } + } +} + +fun Application.connectToPostgres(embedded: Boolean): Connection { + Class.forName("org.postgresql.Driver") + if (embedded) { + return DriverManager.getConnection("jdbc:postgresql://localhost/test;DB_CLOSE_DELAY=-1", "root", "") + } else { + val configs = YamlConfig("postgres.yaml") + val url = "jdbc:postgresql://localhost:5432/" + + configs?.property("services.postgres.environment.POSTGRES_DB")?.getString() + val user = configs?.property("services.postgres.environment.POSTGRES_USER")?.getString() + val password = configs?.property("services.postgres.environment.POSTGRES_PASSWORD")?.getString() + return DriverManager.getConnection(url, user, password) + } +} \ No newline at end of file diff --git a/postgres/src/main/kotlin/com/example/plugins/Serialization.kt b/postgres/src/main/kotlin/com/example/plugins/Serialization.kt new file mode 100644 index 00000000..5bdb88cc --- /dev/null +++ b/postgres/src/main/kotlin/com/example/plugins/Serialization.kt @@ -0,0 +1,11 @@ +package com.example.plugins + +import io.ktor.serialization.kotlinx.json.* +import io.ktor.server.plugins.contentnegotiation.* +import io.ktor.server.application.* + +fun Application.configureSerialization() { + install(ContentNegotiation) { + json() + } +} diff --git a/postgres/src/main/kotlin/com/example/service/ArticleService.kt b/postgres/src/main/kotlin/com/example/service/ArticleService.kt new file mode 100644 index 00000000..d385e063 --- /dev/null +++ b/postgres/src/main/kotlin/com/example/service/ArticleService.kt @@ -0,0 +1,72 @@ +package com.example.service + +import com.example.exceptions.DbElementInsertException +import com.example.exceptions.DbElementNotFoundException +import com.example.models.Article +import kotlinx.coroutines.Dispatchers +import kotlinx.coroutines.withContext +import java.sql.Connection +import java.sql.Statement + +class ArticleService(private val connection: Connection) { + + companion object { + private const val CREATE_TABLE_ARTICLES = + "CREATE TABLE IF NOT EXISTS ARTICLES (ID SERIAL PRIMARY KEY, TITLE VARCHAR(255), BODY VARCHAR(1024));" + private const val SELECT_ARTICLE_BY_ID = "SELECT title, body FROM articles WHERE id = ?" + private const val INSERT_ARTICLE = "INSERT INTO articles (title, body) VALUES (?, ?)" + private const val UPDATE_ARTICLE = "UPDATE articles SET title = ?, body = ? WHERE id = ?" + private const val DELETE_ARTICLE = "DELETE FROM articles WHERE id = ?" + } + + init { + val statement = connection.createStatement() + statement.executeUpdate(CREATE_TABLE_ARTICLES) + } + + // Create new article + suspend fun create(article: Article): Int = withContext(Dispatchers.IO) { + val statement = connection.prepareStatement(INSERT_ARTICLE, Statement.RETURN_GENERATED_KEYS) + statement.setString(1, article.title) + statement.setString(2, article.body) + statement.executeUpdate() + + val generatedKeys = statement.generatedKeys + if (generatedKeys.next()) { + return@withContext generatedKeys.getInt(1) + } else { + throw DbElementInsertException("Unable to retrieve the id of the newly inserted article") + } + } + + // Read an article + suspend fun read(id: Int): Article = withContext(Dispatchers.IO) { + val statement = connection.prepareStatement(SELECT_ARTICLE_BY_ID) + statement.setInt(1, id) + val resultSet = statement.executeQuery() + + if (resultSet.next()) { + val title = resultSet.getString("title") + val body = resultSet.getString("body") + return@withContext Article(title, body) + } else { + throw DbElementNotFoundException("Record not found") + } + } + + // Update an article + suspend fun update(id: Int, article: Article) = withContext(Dispatchers.IO) { + val statement = connection.prepareStatement(UPDATE_ARTICLE) + statement.setString(1, article.title) + statement.setString(2, article.body) + statement.setInt(3, id) + statement.executeUpdate() + } + + // Delete an article + suspend fun delete(id: Int) = withContext(Dispatchers.IO) { + val statement = connection.prepareStatement(DELETE_ARTICLE) + statement.setInt(1, id) + statement.executeUpdate() + } +} \ No newline at end of file diff --git a/postgres/src/main/resources/application.yaml b/postgres/src/main/resources/application.yaml new file mode 100644 index 00000000..ccfb8899 --- /dev/null +++ b/postgres/src/main/resources/application.yaml @@ -0,0 +1,6 @@ +ktor: + application: + modules: + - com.example.ApplicationKt.module + deployment: + port: 8080 diff --git a/postgres/src/main/resources/logback.xml b/postgres/src/main/resources/logback.xml new file mode 100644 index 00000000..bdbb64ec --- /dev/null +++ b/postgres/src/main/resources/logback.xml @@ -0,0 +1,12 @@ + + + + %d{YYYY-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n + + + + + + + + diff --git a/postgres/src/test/kotlin/com/example/ApplicationTest.kt b/postgres/src/test/kotlin/com/example/ApplicationTest.kt new file mode 100644 index 00000000..b4b5f3d3 --- /dev/null +++ b/postgres/src/test/kotlin/com/example/ApplicationTest.kt @@ -0,0 +1,21 @@ +package com.example + +import io.ktor.client.request.* +import io.ktor.client.statement.* +import io.ktor.server.testing.* +import kotlin.test.* +import io.ktor.http.* +import com.example.plugins.* + +class ApplicationTest { + @Test + fun testRoot() = testApplication { + application { + configureRouting() + } + client.get("/").apply { + assertEquals(HttpStatusCode.OK, status) + assertEquals("Hello World!", bodyAsText()) + } + } +}