Let’s suppose the following data structure:
- domain_definition:
- name: server11
cluster: cluster1
port: '8080'
- name: server12
cluster: cluster2
port: '8090'
- name: server21
cluster: cluster3
port: '9080'
- name: server22
cluster: cluster4
port: '9090'
The goal is for example to *extract the port number when
domain_definition.name == 'server21'.*
As simple as it sounds, I tried the following tasks with 'json_query' and
'selectattr': they all failed:
- name: test with json_query 1/2
vars:
- domain_definition:
- name: server11
cluster: cluster1
port: '8080'
- name: server12
cluster: cluster2
port: '8090'
- name: server21
cluster: cluster3
port: '9080'
- name: server22
cluster: cluster4
port: '9090'
debug:
var: "{{ domain_definition |
json_query('domain_definition[?name==`server21`].port') }}"
ignore_errors: yes
- name: test with json_query 2/2
vars:
- domain_definition:
- name: server11
cluster: cluster1
port: '8080'
- name: server12
cluster: cluster2
port: '8090'
- name: server21
cluster: cluster3
port: '9080'
- name: server22
cluster: cluster4
port: '9090'
debug:
var: "{{ . |
json_query('domain_definition[?name==`server21`].port') }}"
ignore_errors: yes
- name: test with selectattr 'match'
vars:
- domain_definition:
- name: server11
cluster: cluster1
port: '8080'
- name: server12
cluster: cluster2
port: '8090'
- name: server21
cluster: cluster3
port: '9080'
- name: server22
cluster: cluster4
port: '9090'
debug:
var: "{{ domain_definition | selectattr('name', 'match',
'^server21$')).port }}"
ignore_errors: yes
- name: test with selectattr 'match'
vars:
- domain_definition:
- name: server11
cluster: cluster1
port: '8080'
- name: server12
cluster: cluster2
port: '8090'
- name: server21
cluster: cluster3
port: '9080'
- name: server22
cluster: cluster4
port: '9090'
debug:
var: "{{ domain_definition | selectattr('name', 'equalto',
'server21')).port }}"
ignore_errors: yes
leads to:
ASK [yang : test with json_query 1/2]
***********************************************************************************************************************
fatal: [XEv_Spine_31]: FAILED! => {
"msg": "template error while templating string: Expected an expression,
got 'end of print statement'. String: {{}}"
}
...ignoring
TASK [yang : test with json_query 2/2]
***********************************************************************************************************************
fatal: [XEv_Spine_31]: FAILED! => {
"msg": "template error while templating string: unexpected '.'. String:
{{ . | json_query('domain_definition[?name==`server21`].port') }}"
}
...ignoring
TASK [yang : test with selectattr 'match']
*******************************************************************************************************************
fatal: [XEv_Spine_31]: FAILED! => {
"msg": "template error while templating string: unexpected ')'. String:
{{ domain_definition | selectattr('name', 'match', '^server21$')).port }}"
}
...ignoring
TASK [yang : test with selectattr 'match']
*******************************************************************************************************************
fatal: [XEv_Spine_31]: FAILED! => {
"msg": "template error while templating string: unexpected ')'. String:
{{ domain_definition | selectattr('name', 'equalto', 'server21')).port }}"
}
...ignoring
What am I doing wrong?
Maybe there is an easier way to achieve that.
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