Groovy yaml dump. Read YAML components from variable in groovy.

Groovy yaml dump – Jul 26, 2018 · As a part of our Jenkins solutions, we use Groovy in our pipelines. To do so I'm using readYaml(): Nov 16, 2022 · I need to generate a yaml file and want to use python to do that. I was wondering whether there is any specific object type/format. What is the most efficient method for updating a string in a YAML file with Groovy? Object. Aug 31, 2011 · If you are using block structured YAML, you can use the python package¹ ruamel. yml') cfgFile. groovy. public Object parseText(String yaml) Parse the content of the specified yaml into a tree of Nodes. yaml file in Groovy? I would like to modify the version maintained in a yaml file within my jenkins pipeline job. RoundTripDumper keyword parameter to yaml. * //as you can see, the entry with type "Date" is commented out. execution { "set-props"( url: "" ) } println b Or to continue on your example: You can create the whole map and use is as argument, where you want to have that content. InvokerHelper. yaml, class: YamlBuilder. For backward compatibility with PyYaml, the yaml. path - the reader of yaml Returns: the root node of the parsed tree of Nodes. My goal is to: (1) add "contexts:" if it doesn't already exists. One popular way it to convert it to JSON. . The problem is that the program that imports the YAML file needs the keywords in a specific order. I read on the forums that the readYml method should be called in the Aug 15, 2017 · I am using Jenkins readYaml to read the data as follows: data = readYaml file: "test. PyYAML also doesn't preserve order of mapping keys on round-tripping. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Sep 2, 2018 · Remember that groovy maps are still just Java maps with "enhancements", so the rules that apply to Java still apply to groovy. Unfortunately, the conversion isn't. Mar 1, 2020 · //Groovy has several ways to serialize a map or list. Apr 25, 2016 · I would like to print all available properties (and their values) in env object inside Jenkinsfile. I defined a method later than I wanted to use in the beginning of the code. Feb 20, 2016 · I am trying to read and parse a YAML file with SnakeYAML and turn it into a config POJO for my Java app: // Groovy pseudo-code class MyAppConfig { List<Widget> widgets String uuid What is the best way to write/modify a *. Item sequences, known elsewhere as arrays or lists, are sequences. It parses a YAML String and recursively converts it to a list or map of objects. I have a class called YamlTape. For writing schemas, I first create a sample example in Yaml and Jan 10, 2016 · Using groovy yaml parser I need delete below lines and write into the file. yaml library, a superset of the stalled PyYAML, with YAML 1. It's been working well so far, but one issue I've noticed is that null properties are present in the YAML output. text) I want to reach now the opposite : Given a Groovy Map, i want to convert it to String in YAML format WITHOUT The class comes with a bunch of overloaded parse methods plus some special methods such as parseText and others. Oct 31, 2024 · To check a specific YAML structure with Groovy, you can use the YamlSlurper class in Groovy. Dec 15, 2014 · I have a simple YAML data like this that I'm trying to convert to a POJO object called Person using SnakeYaml. Groovy 3. I will use YAML terms for data structures: Atomic text content (even numbers) is a scalar. yaml just as an ordinary text file, then you can just use common Groovy ways to work with IO:. Those mentions are never exhaustive since I do not know all YAML implementations out there. 10 println yaml. cps. writeLine('\ntag: 1. By default these properties are not included to be able to parse later the same JavaBean. If you want to treat config. This (How can I write data in YAML format in a file?) helped me a lot but I am missing a few more steps. Nov 22, 2012 · Is there any way to edit/delete the values in a YAMLfile using java. For example: @Grab(group='org. info = "b" I want to write this modified data back to test. The JsonOutput. I'm using struts2-jquery-grid where the data will be populated from YAML file. withWriterAppend() { writer -> writer. I'm using YamlBuilder to convert the object model to a YAML string. yaml which is a derivative of PyYAML and supports round trip preservation of comments: I am having problems dumping the Python object shown below to a yaml file. 2 compatibility, many features added and bugs fixed. In fact my real matter was to find a solution for AWS cfn templates parameters overrides an serverless applications deployment (artifacts and packages) in AWS Service Catalog, through an infrastructure system I set up with aws Management and CI/CD tools. apache. /test. YamlBuilder def b = new YamlBuilder() b. printit() // prints 'asdf' printit isn't the greatest name, but print, println and dump are all taken. stdout, Dumper=dumper) ¹ Disclaimer I am the author of ruamel. May 2, 2012 · I want to dump the following structure to a YAML file: public class TestSuite { String name List testCases = [] } Where the list of test cases are this class: class TestCase { String Nov 5, 2024 · Groovy has an optional groovy-yaml module which provides support for converting between Groovy objects and YAML. The expected yaml string is missing double quotes for values that require double quotes. Groovy 3 adds the YamlSlurper class to read in YAML formatted strings. Unless if there's a way to get this to work with yaml. yml in Jenkins. I've had a look around at the current examples, and I thought this would be much simpler! All samples I've found, either use a MarkupBuilder to Oct 31, 2024 · In this code snippet, we first parse the YAML string using the SnakeYAML library. The classes dedicated to YAML serialisation and parsing are found in the groovy. load; dump the same in a file through yaml. yaml', module='snakeyaml', version='1. snakeyaml. I'm trying to work out if I can use YamlBuilder to generate a literal field in YAML such as: data: | this is a literal text value My first guess was Groovy's multiline string would work: 3. Normally a list is output a YAML sequence, which has either dashes (-, in block style, over multiple lines) or using square brackets ([], in flow style, on one or more lines. dump - default_flow_style - True displays data inline, False doesn't do inline - so you have dumpable data ready. load(). dump(). yaml', module='snakeyaml', version='1 declaration: package: groovy. The result of parsing the YAML content is a Map object. import groovy. This order is not alphabetically. load(new File('config. The dump function in PyYAML converts Python objects into a YAML-formatted string or writes them to a file. yml file: version: 1. Mar 27, 2020 · Preface: Throughout this answer, I mention some popular YAML implementations. RoundTripDumper dumper. 0. lines to remove. RoundTripLoader keyword parameter to yaml. Groovy uses two very similar libraries for both formats, so you will see that the codes are very similar, only changing the variable names In this example, we first import the Yaml class from the org. Related. Yaml Yaml yaml = new Yaml() Map config = yaml. import yaml Dec 11, 2020 · I'm using Groovy to generate an openapi spec document in YAML. each{ println it } The above prints the yaml file, also below is my yaml file Sep 3, 2020 · I am using snakeYaml to convert a String in YAML format to Groovy Map. Jul 26, 2018 · I am trying to parse YAML files in Jenkins pipeline using the readYaml method from the Jenkins plugin "Pipeline Utility Steps". Set to true to include read-only JavaBean properties (the ones without setters) in the YAML document. version output: 1. Jul 24, 2015 · I've been trying to dump a dictionary to a YAML file. To allow preservation of such empty (and comment) lines in YAML that is loaded, I started the development of the ruamel. This is particularly useful for saving configuration data or exporting data in a format that is easy to read and share. e. Parameters: yaml - the content of yaml Returns: the root node of the parsed tree of Nodes I am trying to load an existing YAML file (which uses snakeYaml library) in my Groovy project. yaml') def inputYaml = new YamlSlurper(). groovy which contains method to load the YAML file using the following Oct 25, 2021 · I have a yaml file that may or may not have "contexts:". dump(Object data) method accepts a Java object and produces a YAML document" Convert Groovy Map to String in Yaml format. metaClass. safe_dump() that I missed. We define a hierarchy using a builder syntax where we can use primitive types, strings, collections and objects. load() and yaml. We then create a map with some sample data. Getting YAML value from a variable Groovy. String path = 'path/to/file' File cfgFile = new File(path, 'config. toString(delegate) } 'asdf'. dump(data, sys. util, class: YamlConverter Jun 18, 2019 · The solution that ended up working for me was changing my YAML config to read like this: project_name: project_name project_version: 1. - name: hostname required: true secure: false valueExposed: true When I try to load the Feb 14, 2020 · Groovy 3 adds the YamlBuilder class to create YAML output using a Groovy syntax. Jun 9, 2021 · I am trying to parse some yaml from a file with Groovy here is what I currently have: import groovy. class CameraBrand(): def __init__(self, name, url): May 10, 2016 · You cannot do that in PyYAML. Nov 13, 2019 · There is no need to mix JsonBuilder and JsonOutput in your amd_distribution_distribute_bundle. Jul 1, 2013 · From a noob in groovy: I had the same exception, but for different reason. Now, If I edit the field(s), it should be saved in YAML file. snakeyaml package. json. This kind of control is not provided by PyYAML. First, you need to import the necessary class by adding the following line at the beginning of your Groovy script: Then, you can load the YAML file and parse its contents using the parse() method of YamlSlurper. 1. EnvActionImpl@112cebc2 So it l Jan 9, 2013 · PyYAML documentation only talks about dump() arguments briefly, because there is not much to say. yaml (dislaimer: I am the author of that package), then getting the exact same input as output is easy: Instantly share code, notes, and snippets. //another popular way to serialze a map is YAML. When I replaced it, it worked. For the next example we will use the parseText method. The optional Dumper=ruamel. Next, we create a Yaml object and use its dump method to serialize the data to a YAML string. yaml using declaration: package: org. yml" //modify data. I defined a variable (data) that will contain all the yaml file content. zionyx / map2Json. Read YAML components from variable in groovy. In this example, we first import the Yaml class from the org. 0 scan_path: - application: dotnet path: Core - application: dotnet path: Brickburn - application: dotnet path: ServiceCatalo Jan 30, 2018 · Not sure if this will fit everyone's use cases, but I find you can just append to the file IF it just holds a top level list. toJson(map) method takes a regular Map and translates it to the JSON object equivalent. YAML has the slight drawback that it needs an. Jun 23, 2015 · I'd like to convert my Map object to Xml in Groovy. util. Apr 11, 2013 · json loads in unicode format - convert that to string by json. workflow. Nov 28, 2018 · I have this simple test. @Grab(group='org. printit { -> println org. Groovy uses two very similar libraries for both formats, so you will see that the codes are very similar, only changing the variable names Jan 17, 2020 · It depends. Parameters: Parameters: reader - the reader of yaml Returns: the root node of the parsed tree of Nodes; parse Jan 10, 2020 · And that’s it! Super simple and powerful YAML validation in Groovy / Spock in under 45 lines of code. To do so, explicitly pass: The optional Loader=ruamel. A Subreddit for the Apache Groovy programming language Jul 10, 2017 · Adding onto Anthon's answer, I found some documentation for other options I can pass to default_style at this link here. 17') import org. This is because the anchor gets attached to the node contents, in your example '[1,2,3]' and doesn't know that this value is associated with key 'a'. yaml. Notably the java. The dump Function. groovy file. May 14, 2024 · In this Knowledge Base post, I will leave 2 pieces of very simple and extremely similar code, how to read and write Yamls or Jsons, either by loading files or variables. Hot Network Questions Creates class and makes Aug 6, 2024 · PyYAML makes it easy to work with YAML data in Python by providing functions to load and dump YAML data. age: 123 name: Jackson phone: number: 123456 Here is the Groovy code that does it. Forked from This is a great answer and it works for me so thanks! but I would like to add that this works with yaml. 2. jenkinsci. plugins. Then, we update the value of the key2 key in the data object. safe_dump(). 1. Takes care of unicode as per How to get string objects instead of Unicode from JSON? dumper = yaml. Map interface has a note in there that says: Some map implementations have restrictions on the keys and values they may contain. YamlSlurper def yamlFile = new File('. dump() but doesn't work with yaml. Unless the data that you want to use for the anchor is inside the node. A collection and closure passed to a YAML builder will create a root YAML array applying the closure to each object in the collection Mar 3, 2020 · import groovy. If you use ruamel. Notes: Schema workflow. When I do print env I get: org. Feb 17, 2020 · In Groovy we have useful classes to parse JSON and XML: JsonSlurper and XmlSlurper. yaml package. dump() functions do not perform roundtrip preservation by default. The YamlBuilder is closely related to JsonBuilder that is described in a previous post. runtime. Dec 7, 2021 · Not without a lot more information If we assume it's just something about some intermediate version of the document (and nothing about running the parser multiple times, which is a fairly safe assumption), catching it in the act would be easiest by just wrapping the load call in a try block with an except RecursionError: handler, then dump the offending version of the document out and try Mar 12, 2019 · I have a yaml file on a Jenkins pipeline (scripted in Groovy) and I want to convert that yaml file to JSON format to be parsed in that format. In one of our groovy file I want to update a docker-stack. Oct 25, 2019 · Groovy YAML parsing. One motivation for doing it this is that it just made sense. //Both ways work fine. i. Finally, we convert the updated data back to a YAML string using the dump method and print the updated YAML. 1K subscribers in the groovy community. yaml'). If file has no "contexts:" like below Jan 30, 2016 · When I'm trying to use snakeyaml to dump out Yaml out of Groovy interpolated strings, it ends up printing a class name instead. The best compromise I could find for representing all of my data was: This is not so easy. ignore_aliases = lambda *args : True yaml. 0 has a new YamlBuilder class that works in a similar way to the existing JsonBuilder class. Finally, we write the YAML string to a file named data. Parameters: Aug 9, 2018 · You want to output a Python list as a multi-line plain scalar and that is going to be hard. 1') } Jul 25, 2014 · "The Yaml. dump; load the yaml through yaml. Represents runtime exception occurred when parsing or building YAML Oct 11, 2022 · I am writing a Groovy test to check a method's yaml output and I am having trouble comparing the expected yaml with the generated yaml. codehaus. The indent option only affects mappings and not sequences. parse(yamlFile) inputYaml. 1 Why does this happen and how to workaround this? declaration: package: groovy. lagyr ted nllsz aehtmv ulihq ivyahr fkoitz xlop pfzzux ammzg