Scala config file list. configuration. I am trying to read a property file from classpath using scala. conf import SparkConf. 6. collection. No configuration setting found for key 'conf' while trying to use ConfigFactory Jun 1, 2015 · update configuration in Spark 2. IntelliJ IDEA reflects your changes for Scalafmt under the Configuration option. --scalafmt-conf-str Aliases: --scalafmt-conf-snippet, --scalafmt-config-str. Oct 27, 2018 · I am reading using below code. Only way would be modify the format of data in the file. Handling exceptions. scalafmt. conf using the -Dconfig. libraryDependencies += "org. from pyspark. getString("comp1. net. Overview. home=VALUE your_jar. Map [ String, String] = HashMap ( JAVA_MAIN_CLASS_27606 -> scala. It is getting a bit large, so I want to split it up and I want to have those parts located in a child directory src/main/resources/local. May 26, 2024 · The read-only fields in this column list the log files to show. Mar 18, 2024 · Read Simple Configuration. Here is an example . Hence, this is not only another Typesafe's config wrapper. sbt I am assigning a setting key by calling a piece of my project dependency's code that in turn configures itself via Typesafe Config's ConfigFactory. In the main app, I can load different configurations with the following, where "integration. It might seem that you're passing arguments when in fact you're just doing the equivalent to export BAR=bippy && sbt test:run. I tried this but i didn't get a result: val defaultSvaipConfig = ConfigFactory. staging. View on GitHub. scala My secret value is super-secret By default, the ConfigFactory looks for a configuration file called application. For instance, I'm open to use a List of tuples or a Map[String, List], etc. PureConfig is a Scala library for loading configuration files. conf in src/main/resources. javaOptions in Test += "-Dconfig. we are going to use use SBT build tool to manage dependencies. The behavior of Lightbend Config around loading application. sql import SparkSession. conf using HOCON syntax. The lib/dependency is also my code, btw. These aliases are also displayed in the headers of the tabs where the corresponding log files are shown. Please see Typesafe Config’s documentation for a full telling of the subtleties and see Loading a Config for alternative sources for configuration files. rawData") val coresNumber = config. ScalaConfig adds additional metods: asUnsafe[A](path) - return value of type A by path Jan 16, 2016 · I need to refer to java. sbt/repositories . steps, tags). would become. format("com. load() val config = ConfigFactory. Nothing is loaded with the above code. String resourceBasename) answered Jul 24, 2017 at 12:47. A (short) example configuration would be: Jul 23, 2016 · I try to get a list from a config according to this example: How to get a list with the Typesafe config library However, I get following exception: Exception in thread "main" com. and it works fine when I run my app in production mode. For example:-Ddbname=testdb -Dserver=192. The following 2 code snippet, one is java (working), another is scala (not working). Mar 10, 2015 · 3 Answers. Overall, Scala resources work just the same way as Java resources do. setting="[value1,value2,value3]" In your code you can access it like this: Play. production. getConfig("array") I tried also this : The third way is to use Python module as a config file. Jun 22, 2017 · At path = ${java. Config; If that's not enough it's not so difficult provide your implementation of the ConfigLoader type class and make it available in scope. spark. The snippet in our case is. getString("path. conf") and ConfigFactory. setProperty() ), be aware that Aug 25, 2016 · 1. d = "val1" d. Using directives Scala CLI can be configured inside . */ public final class JsonConfig implements Config { /** * The root JSON node. I don't understand what is the difference. Automatically closing the resource. If you set config. Here we specify the configurations simply as a key-value map i. class Foo(config: Config). I am trying to load application. txt file too. setting") //returns an Option[java. File; scala. /bin/spark-submit --help will show the entire list of these options. bar to whatever value the environment variable BAR is set to. This is achieved by specifying using directives inside comments at the top of a . I would still be interested if there are other ways of doing the same, that do not require an explicit Dec 23, 2018 · To do this, you need to set the fork setting in the run task to true, and then add a JVM command line option: Compile / run / fork := true, Compile / run / javaOptions += "-Dconfig. load(), which will look for application. conf): May 25, 2019 · Make config a field of your classes (it is called constructor injection). http. Source; java. I've tried using the following but they do not return my desired results: The third way is to use Python module as a config file. Jul 15, 2016 · You can (must) use the javaOptions setting. However, if you are already using Typesafe's config library and/or just prefer HOCON syntax for your configuration, there's an adapter that will convert a Typesafe Config object into this Mar 26, 2017 · The easiest way to set some config: spark. jar In the replacement config file, you can use include "application" to include the original default config file; after the include statement you could go on to override certain settings. Jun 13, 2019 · It will load config lists into Scala Seq and config objects as Map[String, ?]. The list can contain: Full paths to specific files. This generates the BSP config files. conf - the user's overrides of any of the above; The idea is that I don't want everything in a single config file, and run the risk of a bad edit causing configuration items to get lost. jar sbt requires configuration in two places to make use of a proxy repository. Mar 7, 2016 · conf/env/default. " ), Aug 14, 2015 · I am using scala typesafe config (version 1. getClassLoader. getStringList("my. If you are ever unclear where configuration options are coming from, you can print out fine-grained debugging information by running spark-submit with the --verbose option. So, I would like to have a reader, which reads these configs as Map[String, String], ex: Jun 6, 2019 · i have a code which loads a properties from 'conf. This is useful in having a fixed path for some of the configuration files. url") I am reading this static information which is provided durng build time. And these spark application configurations can be read using the following snippet to read these types of properties. Dec 1, 2023 · Get and set Apache Spark configuration properties in a notebook. According to my research, we can only read delimiter files from AWS S3 through spark/scala. Aug 28, 2017 · command line arg config-file is used to read config file (using spark context to be able to read from S3/HDFS with custom code path to be able to read from jar resources) config file parsed using com. val rawPath = config. as[T] case class Foo(a: String) extends MyEnum. scala. But it looks like it won't work, it is different from java. Open the configuration file in the editor and specify the Scalafmt version you want to use along with other formatting options. val value1 = config. 188 Specifying a runpath . files. : sbt -Dconfig. conf file or inferred based on Scala version used. val conf = ConfigFactory. Default configs from resources and from read file are combined using the withFallback mechanism. export SCALA_ENV=test) when you run your application, it will consider the right configuration section. val config = ConfigFactory. The order is Mar 27, 2024 · Below we have a sample application. For instance, this method creates a list of all files in a directory: Jun 22, 2017 · At path = ${java. Following is the code and spark-shell command: scala code: import com. Get the default configurations. conf: include "application. BufferedReader reader = new BufferedReader(new InputStreamReader(. To change the default spark configurations you can follow these steps: Import the required classes. home in the same configuration file. Then, in application. My dependency has a reference. load method support varargs type of argument, not the list type. Directives Apr 12, 2012 · Let us quickly see how to set it up, You would need to include the following dependency in your build. --scalafmt-dialect Aliases: --dialect. The code could look as follows: val content = scala. { Config, ConfigFactory } // this can be set into the JVM environment variables, you can easily find it on google. Where spark refers to a SparkSession, that way you can set configs at runtime. resource=" + System. conf. Once you have this, setting up the logger is straight forward. 🚧 Before using specific configuration make sure that your project agrees on the standards. err. Aliases to substitute for full paths or patterns. conf" is defined as an environment variable: ConfigFactory. The exact syntax for the configuration file is detailed in the sbt Launcher Configuration. Using scala-maven-plugin (3. 1- Typesafe Config has well-documented rules for configuration loading which we’ll not repeat. file argument. For local development you can create a file with your overrides and use the config. Projects do this. To use the configuration file, set the config. Source. tmpdir in my application. Apart from the primitive datatypes, Config can parse types such as List, Finite Duration, and Memory Size. getString("key. 1) in one of my projects to read the application. conf") val env = config. io. A boilerplate-free library for loading configuration files. properties, or JSON to native Scala classes in a boilerplate-free way. txt on the driver node. conf file, my project has dependency on multiple other projects and I create a jar with dependencies to run the dependency projects. scala file, before any package or import statement: Like this I can parse a configuration file with typesafe-config and io-circe . parseResourcesAnySyntax("local") val online = ConfigFactory. conf file and the ConfigFactory instead of having to do all the file parsing by yourself: import java. set("spark. url on-the-fly from inside your program (for example with System. res0: scala. How can I access the config. If you want to have config you can change on the fly, keep it out of your jar and reference it on the scalaconfig. it runs tests in a different JVM process (by default). After processing a . g" as objects. */ private JsonNode rootConfigNode; /** * Default constructor. spark-submit can accept any Spark property using the --conf/-c flag, but uses special flags for properties that play a part in launching the Spark application. Now I want to read these in runtime, user should be able to modify configs even after jar is built. So you have explicitly convert list to varargs adding : _* in load function. Leaving files open. Mar 18, 2024 · The most common and idiomatic way to read environment variables in Scala is by using the sys package object, which puts the environment variables into an immutable. databricks. conf which each developer would change according to his own credentials and rename the sample file to credentials. Sealed traits, case classes, collections, optional values, and many other types are all supported out-of-the-box. txt is stored. load() and all the config files values need to be used in my application. You won't need to pass the config. The first is the ~/. File case class Config (. Just have the filtersToCheck as a variable available from your config. Custom path to the scalafmt configuration file. It reads Typesafe Config configurations written in HOCON , Java . load("another")). May 6, 2023 · Files. It errors about not finding the resulting config keys. conf file, the result is always just a JSON tree that you could have written (less conveniently) in JSON. . file. conf: Dec 10, 2021 · 3. Nov 8, 2019 · i try to read a config file and to get the name and age. conf Mar 29, 2024 · Solution 1) Using the concise “fromFile” syntax. Ankit90. 2. If you want to be able to change configuration values without building the jar, you will want your config external to the artifact. Ant patterns that define the range of files to be displayed. getAll() Update the default configurations. sc files using special imports, and the using directive. conf is mostly from ConfigFactory. io. txt file on driver node and how to get the path where the config. Aug 27, 2018 · Hi, Lets say, have a list of conf files which are needed to load into the ConfigFactory. /** * The JSON configuration. It reads Typesafe Config configurations written in HOCON, Java . I have all my configuration set into application. avro"). file=application. What I would like to do, is to define a single parse method which parses my configuration based on the input type. sbt or Build. spark. 168. public static load (java. conf, the line bar = ${?BAR} sets the app. e. g = "val2" } HOCON represents paths "b. Simply put as the first line in thisrun. env. conf or merge that config to the Config object in addition to application. When you use Scalafmt for formatting, all IntelliJ . credentials. As . Some people are concerned about using python file as config file (terming it as security hazard, which is somewhat an unfounded fear), but Using HOCON, the JSON Superset. 7 version. setProperty() ), be aware that Jun 12, 2017 · No Configuration Found for Key while reading Config File In spark/Scala. Access the Scala formatter settings. conf") to load the classpath configuration file. Now, we can open the directory in an IDE and get all the benefits of it. conf), we just need to indicate a different file name and path to load (e. parseResourcesAnySyntax("online") val develop = ConfigFactory. foo: Int = -1 , out: File = new File ( ". fromInputStream( classOf[yourObject]. May 5, 2023 · When we have nested directories and files, we may need to list them all as well. chengpohi. Get Spark configuration properties. However, there may be instances when you need to check (or set) the values of specific Spark configuration properties in a notebook. Sorted by: 36. In this tutorial, we’ll learn different approaches to reading a file from the resources folder in Scala. conf") However, the same function doesn't seem to work in unit test. 6. databaseUrl") If you have your environment set up (e. properties present under src/main/resources into Scala code. It is implemented with type classes pattern and use shapeless for reading case classes. py module and use the list object. conf which locates under src/main/resources. file property to use it. answered May 22, 2018 at 12:23. For example this lib allows you to define a Scala Range while HOCON doesn't. file , or config. Because PureConfig uses Typesafe Config to load configurations, it supports reading files in Feb 4, 2022 · we need to access the config. xxxxxxxxxx. json")) val pathFileConfig = config. scala files. It's really useful when you want to change configs again and again to tune some spark parameters for specific queries. load("integration. Solution 2) Properly closing the file. config" % "typesafe-config" % "0. properties file. partitions", 500). A runpath is the list of filenames, directory paths, and/or URLs that Runner uses to load classes for the running test. Using getClass. conf files are of = pair, its not possible. Feb 11, 2024 · Right-click your project and select New | File. This way the behavior will be exactly as asked in the question. _conf. In this article, will discuss about followings: Each configuration pair is denoted with a "-D", followed immediately by the key string, an "=", and the value string. tools. file and friends in your question). Mar 6, 2014 · Yes, it is possible and described in the Play configuration chapter. Jun 1, 2015 · >> scala config-tutorial. A sample file would be checked in credentials-sample. conf", Don't forget to restart SBT after that. getString(“key1”) For example: There are three config files and from each file key and values needed to as part of the application program. Multiple fromFile methods. conf") Instead of Test plug in whatever config you have. Jul 23, 2016 · I try to get a list from a config according to this example: How to get a list with the Typesafe config library However, I get following exception: Exception in Mar 18, 2024 · ClearConfig can also use configuration files outside the classpath as a config source. getResourceAsStream Mar 26, 2014 · In build. load("perks. walk() method instead of Files. Config; val url = conf. shuffle. Copy. That is a clean solution. Dec 10, 2021 · 3. property' file. file property to SBT with this approach; rather, it is controlled by the Feb 28, 2017 · I am having an application. This is useful if one has config structures as following This is useful if one has config structures as following foo = [] foo += {bar: Bar} foo += {zoo: Zoo} According to my research, we can only read delimiter files from AWS S3 through spark/scala. conf: align. parseResourcesAnySyntax("application") //develop environment. sc files Configuration information can also be put in . nsc. In my config file I need to have a group of tuples without being too finicky on the collection type. my requirement is to modify url event after jar is build, I dont Aug 30, 2017 · 1. Error, T] = config. Either case, first you need a case class that represents the configuration: import java. {Config, ConfigFactory} val config: Config = ConfigFactory. getResource method which returns a URL. cores") ConfigData(rawPat,coresNumber) and then simply call initData() to test for config load errors. conf") if you call entrySet on the root config (not conf. md in this directory for more detail. If we use the Files. Jun 14, 2017 · Scala Load Configuration With PureConfig PureConfig is a nifty library that serves as a front-end for other libraries. root(). See HOCON. f. split Jun 12, 2017 · I am using typeSafe config to load the properties from application. We can use the method propFile instead of propFileOnClasspath: ConfigSource. Like the following (from application. resource , config. file=dev. Adding the include to the local. load(paths: _*) Jul 14, 2014 · I found one way of superseding application. David Pollak’s “using” control structure. d" and "d. preset = more // For pretty alignment. ~/. The first solution we can use comes from Java: the Class. as a set of properties. maxColumn = 1234. 5)? The following does not seem to work. Current documentation is a actual for 0. conf run Local development. Pass a global dialect for scalafmt. ConfigFactory. 1. The default is development. Let’s create a very simple application. Running . If willing to use a different configuration file (e. Apr 20, 2023 · Using Scala, you want to get a list of files that are in a directory, potentially limiting the list of files with a filtering algorithm. 2. // working. This was already discussed here: Activator : Play Framework 2. Nov 18, 2020 · It is best practice to have a config file for your Scala spark applications which may contain pipeline configurations. 0. load("application. 1. List[String]] You may also use getLongList, getBooleanList and so on. skife. read. Mar 18, 2024 · ClearConfig can also use configuration files outside the classpath as a config source. There are many options available, but Typesafe is one of the popular configuration library for JVM based languages. conf through Java properties, one can load a The configuration file is XML containing a list of rules to apply to your Scala source. sbt/repositories file, and the second is the launcher script. Apart from loading your config through a java. import com. x : run vs. Oct 10, 2023 · I have a Scala app with a base config file, local. I am a bit stuck on how to do it. conf with thisrun. file system property to the path of your configuration file when you run the application, e. Feb 11, 2021 · What I am trying to do is load the config file into the app, and then extract the lists from inside the config file (e. In general, configuration values explicitly set on a SparkConf take the highest precedence, then flags passed to spark-submit, then values in the defaults file. sql. util. There are ways to modify the contents of the built jar but I don't think that is what you are wanting to do. parseFile(new File("config. sparkContext. lang. -DBAR=bippy is setting the environment variable BAR to bippy, nothing else. It represents Java options when sbt runs a forked JVM, e. typesafe. Then you can wire-up your dependencies manually, like: val config: AppConfig = AppConfig() val foo = Foo(config) //you need to pass config manually to constructors in your object graph. var fileNameArray: Array[String] = “mysql,hbase,mongodb”. getLong("comp1. scala and . Its real strength is as a boilerplate-free way of loading Scala config files. ScalaConfig is a lightweight wrapper over Typesafe Lightbend Config library provides scala friendly access. The JSON superset is called "Human-Optimized Config Object Notation" or HOCON, and files use the suffix . load("myconfiguration2. conf - the default configuration values for all environments; conf/env/<env>. To get the current value of a Spark config property, evaluate the property without including a value. The first is command line options, such as --master, as shown above. setup. def propertyReader(path:String): Properties = {. conf" and sets the config. java -jar -Djava. c. The repositories file is an external configuration for the Launcher. properties , or JSON to native Scala classes in a boilerplate-free way. This overrides whatever value is configured in the . This article shows you how to display the current value of a Spark Configuration for scalafmt is defined in a plain text file . I am looking for functionality similar to the Typesafe Scala Hocon：从配置文件读取对象数组 在本文中，我们将介绍如何使用Scala Hocon库从配置文件中读取对象数组。Hocon是一种用于配置文件的人类可读格式，Scala Hocon库提供了方便的方法来解析和访问配置文件中的数据。 阅读更多：Scala 教程 Hocon简介 Hocon（Human-Optimized Config Object Notation）是一种基于JSO Jul 30, 2015 · Using the quotes, the activator's JVM gets no -D argument but it interprets "run -Dconfig. URL; com. file property accordingly, also in the activator's JVM. root(), but the root object of this config) it will returns many garbage, what you need to do is to place all your perks under some path in the perks. Pass configuration as a string. conf in spark-shell using typesafe-config. 4. test. In our specific case, we may want to include the c. load() System. key1") spark-shell commands: spark-shell --jars confing-1. conf file: id = 100. conf or the file/resource given by Java properties (the -Dconfig. Dec 19, 2015 · and then include it some way in my application. Best way would be to use a . : ConfigFactory. home} you are referring to other value under java. Jul 24, 2019 · 0. 4. scopt 4. File. 6). render()) and it renders it like # dev/ In . conf file in resources of an SBT project. immutable. load() In some certain situation when I run my app in docker container and I need to override about 30 of properties. I use a way to render config with parseResourcesAnySyntax method by separate myConfig with default: val local = ConfigFactory. It also shows you how to set a new value for a Spark configuration property in a notebook. In general, what you are looking for is this: my. : another. list() we used before, we’ll list all nested files out of the box: Mar 25, 2015 · How can I pass a config file to a scala program in maven (3. 0-SNAPSHOT" fun2-version: "0. URI; java. Let’s start by My question is : How to read a list of string to a List [String] and not this strange "java" type ? Aug 12, 2013 · My scala application will be packaged into a jar. Feb 2, 2019 · This is the concrete implementation of Config called JsonConfig that will support the loading of the JSON file. Update: Reading a file with Try, Success, and Failure. Python Feb 27, 2013 · 7. render()) and it renders it like # dev/ Mar 18, 2024 · We can generate the necessary configuration files for using an IDE by running a command where the Scala file exists: scala-cli ide-setup . getProperty("config. May 16, 2017 · In a general case, if a file is inside a jar file, you should use InputStream to access the file (not as a File directly). 3. 0". conf - the environment-specific values ; application. Is there a better option to load all properties and store them in e. jar 1. conf". resource", "application. In the replacement config file, you can use include "application" to include the original default config file; after the include statement you could go on to override certain settings. Some people are concerned about using python file as config file (terming it as security hazard, which is somewhat an unfounded fear), but Sep 19, 2020 · I have following HOCON config: a { b. getResourceAsStream(yourFileNameHere) See Scala's Source object and Java's ClassLoader. propFile[Id](sysFileFullPath, optional = true) Copy. x provides two styles of constructing a command line option parser: functional DSL and object-oriented DSL. conf doesn't work. start Jul 24, 2017 · Seems you are using typesafe config to load the conf file, you can directly use ConfigFactory. In most cases, you set the Spark config ( AWS | Azure ) at the cluster level. println(c. current. When I run my app, it needs to read an additional config file stored externally to my app jar. In order to override value you should run your application with. com. nio. Sep 10, 2019 · A possible solution we found is to preload all the config values to a case class, so. getResource. conf in the root of the jar, and my project itself contains an overriding application. Scala doesn’t offer any different methods for working with directories, so use the listFiles method of the Java File class. getString ("your_app. While running the code from eclipse, the properties are getting loade For example you have the following code in your Settings. g. Solution. Path you can also use the following resources: String; java. map? Current approach force to add one line of code for each Feb 6, 2014 · Now from anywhere in your application, you can access configuration: Config (). Map [String, String]: scala> sys. conf would be git ignored. config. 0. How can I assign variables inside this file? For example: project { fun1-version: "0. Feb 27, 2013 · 7. conf file I printed content of my config with val c = ConfigFactory. Jan 16, 2016 · I need to refer to java. def parse[T <: MyEnum](config: Config): Either[circe. conf through Java properties, one can load a Dec 1, 2023 · This article shows you how to display the current value of a Spark configuration property in a notebook. If not interested in setting the alternative to application. data. load("myconfiguration1. crrzkifvilienvvocklh