AWS Glue contoh menggunakan SDK untuk Kotlin - AWS SDK for Kotlin

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AWS Glue contoh menggunakan SDK untuk Kotlin

Contoh kode berikut menunjukkan cara melakukan tindakan dan mengimplementasikan skenario umum dengan menggunakan AWS SDK untuk Kotlin with. AWS Glue

Dasar-dasar adalah contoh kode yang menunjukkan kepada Anda bagaimana melakukan operasi penting dalam suatu layanan.

Tindakan adalah kutipan kode dari program yang lebih besar dan harus dijalankan dalam konteks. Sementara tindakan menunjukkan cara memanggil fungsi layanan individual, Anda dapat melihat tindakan dalam konteks dalam skenario terkait.

Setiap contoh menyertakan tautan ke kode sumber lengkap, di mana Anda dapat menemukan instruksi tentang cara mengatur dan menjalankan kode dalam konteks.

Hal-hal mendasar

Contoh kode berikut ini menunjukkan cara:

  • Buat crawler yang merayapi bucket Amazon S3 publik dan membuat database metadata berformat CSV.

  • Daftar informasi tentang database dan tabel di situs Anda AWS Glue Data Catalog.

  • Buat pekerjaan untuk mengekstrak data CSV dari bucket S3, mengubah data, dan memuat output berformat JSON ke bucket S3 lain.

  • Buat daftar informasi tentang menjalankan pekerjaan, melihat data yang diubah, dan membersihkan sumber daya.

Untuk informasi selengkapnya, lihat Tutorial: Memulai AWS Glue Studio.

SDK untuk Kotlin
catatan

Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS.

suspend fun main(args: Array<String>) { val usage = """ Usage: <iam> <s3Path> <cron> <dbName> <crawlerName> <jobName> <scriptLocation> <locationUri> Where: iam - The Amazon Resource Name (ARN) of the AWS Identity and Access Management (IAM) role that has AWS Glue and Amazon Simple Storage Service (Amazon S3) permissions. s3Path - The Amazon Simple Storage Service (Amazon S3) target that contains data (for example, CSV data). cron - A cron expression used to specify the schedule (for example, cron(15 12 * * ? *). dbName - The database name. crawlerName - The name of the crawler. jobName - The name you assign to this job definition. scriptLocation - Specifies the Amazon S3 path to a script that runs a job. locationUri - Specifies the location of the database """ if (args.size != 8) { println(usage) exitProcess(1) } val iam = args[0] val s3Path = args[1] val cron = args[2] val dbName = args[3] val crawlerName = args[4] val jobName = args[5] val scriptLocation = args[6] val locationUri = args[7] println("About to start the AWS Glue Scenario") createDatabase(dbName, locationUri) createCrawler(iam, s3Path, cron, dbName, crawlerName) getCrawler(crawlerName) startCrawler(crawlerName) getDatabase(dbName) getGlueTables(dbName) createJob(jobName, iam, scriptLocation) startJob(jobName) getJobs() getJobRuns(jobName) deleteJob(jobName) println("*** Wait for 5 MIN so the $crawlerName is ready to be deleted") TimeUnit.MINUTES.sleep(5) deleteMyDatabase(dbName) deleteCrawler(crawlerName) } suspend fun createDatabase( dbName: String?, locationUriVal: String?, ) { val input = DatabaseInput { description = "Built with the AWS SDK for Kotlin" name = dbName locationUri = locationUriVal } val request = CreateDatabaseRequest { databaseInput = input } GlueClient { region = "us-east-1" }.use { glueClient -> glueClient.createDatabase(request) println("The database was successfully created") } } suspend fun createCrawler( iam: String?, s3Path: String?, cron: String?, dbName: String?, crawlerName: String, ) { val s3Target = S3Target { path = s3Path } val targetList = ArrayList<S3Target>() targetList.add(s3Target) val targetOb = CrawlerTargets { s3Targets = targetList } val crawlerRequest = CreateCrawlerRequest { databaseName = dbName name = crawlerName description = "Created by the AWS Glue Java API" targets = targetOb role = iam schedule = cron } GlueClient { region = "us-east-1" }.use { glueClient -> glueClient.createCrawler(crawlerRequest) println("$crawlerName was successfully created") } } suspend fun getCrawler(crawlerName: String?) { val request = GetCrawlerRequest { name = crawlerName } GlueClient { region = "us-east-1" }.use { glueClient -> val response = glueClient.getCrawler(request) val role = response.crawler?.role println("The role associated with this crawler is $role") } } suspend fun startCrawler(crawlerName: String) { val crawlerRequest = StartCrawlerRequest { name = crawlerName } GlueClient { region = "us-east-1" }.use { glueClient -> glueClient.startCrawler(crawlerRequest) println("$crawlerName was successfully started.") } } suspend fun getDatabase(databaseName: String?) { val request = GetDatabaseRequest { name = databaseName } GlueClient { region = "us-east-1" }.use { glueClient -> val response = glueClient.getDatabase(request) val dbDesc = response.database?.description println("The database description is $dbDesc") } } suspend fun getGlueTables(dbName: String?) { val tableRequest = GetTablesRequest { databaseName = dbName } GlueClient { region = "us-east-1" }.use { glueClient -> val response = glueClient.getTables(tableRequest) response.tableList?.forEach { tableName -> println("Table name is ${tableName.name}") } } } suspend fun startJob(jobNameVal: String?) { val runRequest = StartJobRunRequest { workerType = WorkerType.G1X numberOfWorkers = 10 jobName = jobNameVal } GlueClient { region = "us-east-1" }.use { glueClient -> val response = glueClient.startJobRun(runRequest) println("The job run Id is ${response.jobRunId}") } } suspend fun createJob( jobName: String, iam: String?, scriptLocationVal: String?, ) { val commandOb = JobCommand { pythonVersion = "3" name = "MyJob1" scriptLocation = scriptLocationVal } val jobRequest = CreateJobRequest { description = "A Job created by using the AWS SDK for Java V2" glueVersion = "2.0" workerType = WorkerType.G1X numberOfWorkers = 10 name = jobName role = iam command = commandOb } GlueClient { region = "us-east-1" }.use { glueClient -> glueClient.createJob(jobRequest) println("$jobName was successfully created.") } } suspend fun getJobs() { val request = GetJobsRequest { maxResults = 10 } GlueClient { region = "us-east-1" }.use { glueClient -> val response = glueClient.getJobs(request) response.jobs?.forEach { job -> println("Job name is ${job.name}") } } } suspend fun getJobRuns(jobNameVal: String?) { val request = GetJobRunsRequest { jobName = jobNameVal } GlueClient { region = "us-east-1" }.use { glueClient -> val response = glueClient.getJobRuns(request) response.jobRuns?.forEach { job -> println("Job name is ${job.jobName}") } } } suspend fun deleteJob(jobNameVal: String) { val jobRequest = DeleteJobRequest { jobName = jobNameVal } GlueClient { region = "us-east-1" }.use { glueClient -> glueClient.deleteJob(jobRequest) println("$jobNameVal was successfully deleted") } } suspend fun deleteMyDatabase(databaseName: String) { val request = DeleteDatabaseRequest { name = databaseName } GlueClient { region = "us-east-1" }.use { glueClient -> glueClient.deleteDatabase(request) println("$databaseName was successfully deleted") } } suspend fun deleteCrawler(crawlerName: String) { val request = DeleteCrawlerRequest { name = crawlerName } GlueClient { region = "us-east-1" }.use { glueClient -> glueClient.deleteCrawler(request) println("$crawlerName was deleted") } }

Tindakan

Contoh kode berikut menunjukkan cara menggunakanCreateCrawler.

SDK untuk Kotlin
catatan

Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS.

suspend fun createGlueCrawler( iam: String?, s3Path: String?, cron: String?, dbName: String?, crawlerName: String, ) { val s3Target = S3Target { path = s3Path } // Add the S3Target to a list. val targetList = mutableListOf<S3Target>() targetList.add(s3Target) val targetOb = CrawlerTargets { s3Targets = targetList } val request = CreateCrawlerRequest { databaseName = dbName name = crawlerName description = "Created by the AWS Glue Kotlin API" targets = targetOb role = iam schedule = cron } GlueClient { region = "us-west-2" }.use { glueClient -> glueClient.createCrawler(request) println("$crawlerName was successfully created") } }
  • Untuk detail API, lihat CreateCrawlerdi AWS SDK untuk referensi API Kotlin.

Contoh kode berikut menunjukkan cara menggunakanGetCrawler.

SDK untuk Kotlin
catatan

Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS.

suspend fun getSpecificCrawler(crawlerName: String?) { val request = GetCrawlerRequest { name = crawlerName } GlueClient { region = "us-east-1" }.use { glueClient -> val response = glueClient.getCrawler(request) val role = response.crawler?.role println("The role associated with this crawler is $role") } }
  • Untuk detail API, lihat GetCrawlerdi AWS SDK untuk referensi API Kotlin.

Contoh kode berikut menunjukkan cara menggunakanGetDatabase.

SDK untuk Kotlin
catatan

Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS.

suspend fun getSpecificDatabase(databaseName: String?) { val request = GetDatabaseRequest { name = databaseName } GlueClient { region = "us-east-1" }.use { glueClient -> val response = glueClient.getDatabase(request) val dbDesc = response.database?.description println("The database description is $dbDesc") } }
  • Untuk detail API, lihat GetDatabasedi AWS SDK untuk referensi API Kotlin.

Contoh kode berikut menunjukkan cara menggunakanStartCrawler.

SDK untuk Kotlin
catatan

Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara pengaturan dan menjalankannya di Repositori Contoh Kode AWS.

suspend fun startSpecificCrawler(crawlerName: String?) { val request = StartCrawlerRequest { name = crawlerName } GlueClient { region = "us-west-2" }.use { glueClient -> glueClient.startCrawler(request) println("$crawlerName was successfully started.") } }
  • Untuk detail API, lihat StartCrawlerdi AWS SDK untuk referensi API Kotlin.