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KirillKurdyukovKirillKurdyukov
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Test Db Application (#54)
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‎jdbc/spring-test-db/pom.xml‎

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>tech.ydb.jdbc.examples</groupId>
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<artifactId>ydb-jdbc-examples</artifactId>
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<version>1.1.0-SNAPSHOT</version>
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</parent>
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<artifactId>spring-test-db</artifactId>
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<name>Spring Data Test Db Example</name>
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<properties>
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<maven.compiler.release>17</maven.compiler.release>
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<kotlin.version>1.9.22</kotlin.version>
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<hibernate.ydb.dialect.version>1.4.0</hibernate.ydb.dialect.version>
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<spring.boot.version>3.2.1</spring.boot.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-data-jpa</artifactId>
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<version>${spring.boot.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.data</groupId>
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<artifactId>spring-data-commons</artifactId>
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<version>${spring.boot.version}</version>
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</dependency>
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<dependency>
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<groupId>org.jetbrains.kotlin</groupId>
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<artifactId>kotlin-reflect</artifactId>
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<version>${kotlin.version}</version>
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</dependency>
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<dependency>
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<groupId>org.jetbrains.kotlin</groupId>
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<artifactId>kotlin-stdlib</artifactId>
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<version>${kotlin.version}</version>
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</dependency>
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<dependency>
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<groupId>tech.ydb.dialects</groupId>
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<artifactId>hibernate-ydb-dialect</artifactId>
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<version>${hibernate.ydb.dialect.version}</version>
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</dependency>
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<dependency>
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<groupId>tech.ydb.jdbc</groupId>
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<artifactId>ydb-jdbc-driver</artifactId>
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</dependency>
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<dependency>
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<groupId>com.github.javafaker</groupId>
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<artifactId>javafaker</artifactId>
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<version>1.0.2</version>
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</dependency>
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<dependency>
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<groupId>org.jetbrains.kotlinx</groupId>
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<artifactId>kotlinx-coroutines-core</artifactId>
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<version>1.7.3</version>
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</dependency>
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<dependency>
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<groupId>org.postgresql</groupId>
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<artifactId>postgresql</artifactId>
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<version>42.7.3</version>
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</dependency>
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<dependency>
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<groupId>org.testcontainers</groupId>
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<artifactId>postgresql</artifactId>
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<version>1.19.1</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<version>${spring.boot.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>tech.ydb.test</groupId>
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<artifactId>ydb-junit5-support</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<sourceDirectory>${project.basedir}/src/main/kotlin</sourceDirectory>
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<testSourceDirectory>${project.basedir}/src/test/kotlin</testSourceDirectory>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-surefire-plugin</artifactId>
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<configuration>
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<environmentVariables>
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<TESTCONTAINERS_REUSE_ENABLE>true</TESTCONTAINERS_REUSE_ENABLE>
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</environmentVariables>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<version>${spring.boot.version}</version>
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</plugin>
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<plugin>
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<groupId>org.jetbrains.kotlin</groupId>
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<artifactId>kotlin-maven-plugin</artifactId>
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<version>${kotlin.version}</version>
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<executions>
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<execution>
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<id>compile</id>
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<phase>compile</phase>
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<goals>
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<goal>compile</goal>
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</goals>
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</execution>
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<execution>
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<id>test-compile</id>
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<goals>
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<goal>test-compile</goal>
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</goals>
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</execution>
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</executions>
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<configuration>
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<jvmTarget>17</jvmTarget>
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<args>
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<arg>-Xjsr305=strict</arg>
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</args>
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<compilerPlugins>
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<plugin>spring</plugin>
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<plugin>jpa</plugin>
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</compilerPlugins>
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</configuration>
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<dependencies>
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<dependency>
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<groupId>org.jetbrains.kotlin</groupId>
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<artifactId>kotlin-maven-allopen</artifactId>
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<version>${kotlin.version}</version>
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</dependency>
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<dependency>
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<groupId>org.jetbrains.kotlin</groupId>
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<artifactId>kotlin-maven-noarg</artifactId>
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<version>${kotlin.version}</version>
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</dependency>
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</dependencies>
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</plugin>
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</plugins>
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</build>
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</project>

‎jdbc/spring-test-db/src/main/kotlin/tech/ydb/testdb/TestDbApplication.kt‎

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package tech.ydb.testdb
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import jakarta.persistence.EntityManager
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import org.slf4j.LoggerFactory
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import org.springframework.beans.factory.annotation.Autowired
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import org.springframework.boot.CommandLineRunner
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import org.springframework.boot.autoconfigure.SpringBootApplication
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import org.springframework.boot.runApplication
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import java.time.Instant
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/**
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* @author Kirill Kurdyukov
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*/
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@SpringBootApplication
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class TestDbApplication : CommandLineRunner {
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companion object {
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private val log = LoggerFactory.getLogger(TestDbApplication::class.java)
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}
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@Autowired
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lateinit var entityManager: EntityManager
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override fun run(vararg args: String?) {
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val testString = String(ByteArray(1024) { 'a'.code.toByte() })
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var sink = 0
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val t0 = System.nanoTime()
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val end = t0 + 10_000_000_000L
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var count = 0
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while (System.nanoTime() < end) {
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sink += getFixedString(testString).length
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count++
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}
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val elapsed = System.nanoTime() - t0
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val avgMs = elapsed.toDouble() / count / 1_000_000.0
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val opsPerSec = count * 1e9 / elapsed
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log.info("avg={} ms/op, throughput={} ops/s", avgMs, opsPerSec)
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}
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fun getFixedString(s: String): String {
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return entityManager.createNativeQuery("SELECT ?1")
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.setParameter(1, s)
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.singleResult.toString()
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}
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}
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fun main(args: Array<String>) {
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runApplication<TestDbApplication>(*args)
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}

‎jdbc/spring-test-db/src/main/resources/application.properties‎

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spring.jpa.properties.hibernate.dialect=tech.ydb.hibernate.dialect.YdbDialect
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spring.datasource.driver-class-name=tech.ydb.jdbc.YdbDriver
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spring.datasource.url=jdbc:ydb:grpc://localhost:2136/local

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