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Yaml value with a leading `!`


Yaml value with a leading `!`

By : Aaron Wik
Date : November 22 2020, 10:33 AM
wish of those help The Yaml parser for Ruby treats values with a leading bang as syntax errors (probably for shebang reasons?), so having something like this in a database.yml for Rails wouldn't be valid: , Why not this?
code :
password: '!something'


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Java and YAML: how to parse multiple yaml documents and merge them to a single YAML representation?

Java and YAML: how to parse multiple yaml documents and merge them to a single YAML representation?


By : liyinglr
Date : March 29 2020, 07:55 AM
like below fixes the issue You can use Jackson, the key is using ObjectMapper.readerForUpdating() and annotate the field with @JsonMerge (or all the missing fields in next objects will overwrite the old one):
Maven:
code :
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.9.9</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.dataformat</groupId>
        <artifactId>jackson-dataformat-yaml</artifactId>
        <version>2.9.9</version>
    </dependency>
public class TestJackson {
    public static void main(String[] args) throws IOException {
        ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
        MyConfig myConfig = new MyConfig();
        ObjectReader objectReader = mapper.readerForUpdating(myConfig);
        objectReader.readValue(new File("misc/a.yaml"));
        objectReader.readValue(new File("misc/b.yaml"));
        System.out.println(myConfig);
    }

    @Data
    public static class MyConfig {
        @JsonMerge
        private Pool pool;
    }

    @Data
    public static class Pool {
        private Integer idleConnectionTestPeriodSeconds;
        private Integer idleMaxAgeInMinutes;
        private Integer partitionCount;
        private Integer acquireIncrement;
        private String username;
        private String password;
    }
}
Yaml change not detected,Exception encountered during startup: Invalid yaml: file:/etc/cassandra/cassandra.yaml

Yaml change not detected,Exception encountered during startup: Invalid yaml: file:/etc/cassandra/cassandra.yaml


By : John Michael Clement
Date : March 29 2020, 07:55 AM
wish help you to fix your issue It seems you have got into a issue with Cluster name,it is supposed be changed on all the nodes if you willing to change it.
Here are instruction to change Cluster name : 1. Log into cqlsh 2. cqlsh> UPDATE system.local SET cluster_name = 'Petter Cluster' where key='local'; (You need to issue this command on each of the nodes where you would like to change the cluster name. ) system.local gets changed only locally 3. cqlsh> exit; 4. $ nodetool flush system 5. edit cassandra.yaml cluster name to YOUR_CLUSTER_NAME. 6. Restart cassandra.
Using ruamel.yaml to update yaml block in yaml file which contains multiple yamls

Using ruamel.yaml to update yaml block in yaml file which contains multiple yamls


By : DanCamarotto
Date : March 29 2020, 07:55 AM
With these it helps Your file consists of multiple YAML documents, this is what you read in using round_trip_load_all, which gives you a generator.
If you write that back using round_trip_dump(), you are never going to get the --- YAML document separators that are in the original file.
code :
import sys
import ruamel.yaml

yaml = ruamel.yaml.YAML()
yaml.preserve_quotes = True
data = list(yaml.load_all(open('app.yaml')))

# parse the most recent git commit sha from command line
# docker_image = 'blockfreight/go-bftx:ci-cd-' + check_output('git log -1 -- pretty=format:%h'.split()).decode()
docker_image = 'blockfreight/go-bftx:ci-cd-' + 'check_output_output'

# update go-bftx image with most recent git-commit-sha tag in the StatefulSet block
data[-1]['spec']['template']['spec']['containers'][1]['image'] = docker_image

with open('out.yaml', 'w') as ofp:
    yaml.dump_all(data, ofp)
import sys
import ruamel.yaml

with open('out.yaml', 'w') as ofp:
    lines = ''
    with open('app.yaml') as ifp:
        for line in ifp:
            lines += line
            if line == '---\n':
                ofp.write(lines)
                lines = ''
    # process lines from the last document
    # print(lines)
    yaml = ruamel.yaml.YAML()
    yaml.preserve_quotes = True
    data = yaml.load(lines)

    # parse the most recent git commit sha from command line
    # docker_image = 'blockfreight/go-bftx:ci-cd-' + check_output('git log -1 -- pretty=format:%h'.split()).decode()
    docker_image = 'blockfreight/go-bftx:ci-cd-' + 'check_output_output'

    # update go-bftx image with most recent git-commit-sha tag in the StatefulSet block
    data['spec']['template']['spec']['containers'][1]['image'] = docker_image

    yaml.dump(data, ofp)
--- app.yaml    2018-06-23 14:41:02.256290577 +0200
+++ out.yaml    2018-06-23 14:58:09.933991459 +0200
@@ -143,7 +143,7 @@
 spec:
   selector:
     matchLabels:
-       app: bftx
+      app: bftx
   serviceName: blockfreight
   replicas: 1
   template:
@@ -151,7 +151,7 @@
       labels:
         app: bftx
     spec:
-     containers:
+      containers:
       - name: tm
         imagePullPolicy: IfNotPresent
         image: tendermint/tendermint:0.20.0
@@ -199,7 +199,7 @@
           tendermint node --moniker="`hostname`" --p2p.seeds="aeabbf6b891435013f2a800fa9e22a1451ca90fd@bftx0.blockfreight.net:8888,6e9515c2cfed19464e6ce11ba2297ecdb411103b@bftx1.blockfreight.net:8888,b8b988370783bd0e58bf926d621a47160af2bdae@bftx2.blockfreight.net:8888,8c091f4e3dc4ac27db1efd38beee012d99967fd8@bftx3.blockfreight.net:8888" --proxy_app="tcp://localhost:46658" --consensus.create_empty_blocks=false
       - name: app
         imagePullPolicy: Always
-        image: blockfreight/go-bftx:rc1
+        image: blockfreight/go-bftx:ci-cd-check_output_output
         ports:
         - containerPort: 12345
         - containerPort: 46658
@@ -247,7 +247,7 @@
         - mountPath: /etc/nginx/conf.d/pub_key.conf
           name: tmconfigdir
           subPath: pub_key_nginx.conf
-     volumes:
+      volumes:
       - name: tmconfigdir
         configMap:
           name: bftx-config
@@ -262,7 +262,7 @@
       annotations:
         volume.alpha.kubernetes.io/storage-class: anything
     spec:
-      accessModes: [ "ReadWriteOnce" ]
+      accessModes: ["ReadWriteOnce"]
       resources:
         requests:
           storage: 2Gi
@@ -271,7 +271,7 @@
       annotations:
         volume.alpha.kubernetes.io/storage-class: anything
     spec:
-      accessModes: [ "ReadWriteOnce" ]
+      accessModes: ["ReadWriteOnce"]
       resources:
         requests:
           storage: 12Mi
How to preserve leading white space while reading yaml

How to preserve leading white space while reading yaml


By : Krzysztof Piotr Wawo
Date : March 29 2020, 07:55 AM
I wish this helpful for you I am reading yaml file with YamlReader(yamlbeans.YamlReader) , Use an indentation indicator:
How to read/load yaml parameters with leading zeros as a string?

How to read/load yaml parameters with leading zeros as a string?


By : Funani Kuda Ndou
Date : March 29 2020, 07:55 AM
seems to work fine First of all, there are no YAML strings, there are collections (mappings and sequences) and scalars. Assuming these scalars are not tagged (as in your case), they can be quoted (for the sake of simplicity this includes literal/folded style) or plain.
In the normal case of loading a YAML document, a quoted scalar will be loaded as strings, and the plain scalar is open for interpretation as a special type depending on its "content". That interpretation could lead to it being a boolean, a date, a floating point value. If none of those match, the plain scalar is loaded as a string.
code :
import sys
import ruamel.yaml
import yaml as pyyaml

yaml_str = """\
- 00005    
- 00008    # this is not an octal in YAML 1.1
- 00015
"""

yaml = ruamel.yaml.YAML()
data = yaml.load(yaml_str)
print('ruamel.yaml:', data, type(data[0]))
yaml.dump(data, sys.stdout)
print('-----------')
data = pyyaml.load(yaml_str)
print('pyyaml:     ', data, type(data[0]))
pyyaml.dump(data, sys.stdout, default_flow_style=False)
ruamel.yaml: [5, 8, 15] <class 'ruamel.yaml.scalarint.ScalarInt'>
- 00005
- 00008    # this is not an octal in YAML 1.1
- 00015
-----------
pyyaml:      [5, '00008', 13] <class 'int'>
- 5
- 00008
- 13
from ruamel.yaml import YAML

for t in ['rt', 'safe', 'base']:   # 'rt' is the default
    data = YAML(typ=t).load("00005")
    dt = type(data)
    print(f'{t:5}  {data!r:7}  {dt}')
rt     5        <class 'ruamel.yaml.scalarint.ScalarInt'>
safe   5        <class 'int'>
base   '00005'  <class 'str'>
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