只是想問一下，我可以輕松地評估 ansible（jinja 模板）中任何變數的型別。具體情況是，我在記憶體中有如下所示的變數：
"DEFAULT_BACKUPPATH": "/backup",
"DEFAULT_BACKUPTYPE": "rsync",
"DEFAULT_ZIP_BACKUP": "0",
"DEFAULT_DD_BACKUP_SAVE_USED_PARTITIONS_ONLY": 0,
"DEFAULT_KEEPBACKUPS": "3",
"DEFAULT_KEEPBACKUPS_DD": 0,
"DEFAULT_KEEPBACKUPS_DDZ": 0,
"DEFAULT_KEEPBACKUPS_TAR": 0,
（如您所見，有字串和數字）現在我想在模板中使用它們。在模板中，我需要在字串周圍加上引號，而在數字周圍不加引號，因為這很常見。
源代碼是一個看起來像這樣的 yaml（我將它包含在 include_vars 中）
# path to store the backupfile
DEFAULT_BACKUPPATH: "/backup"
# type of backup: dd, tar or rsync
DEFAULT_BACKUPTYPE: "rsync"
# zip tar or dd backup
DEFAULT_ZIP_BACKUP: "0"
# dd backup will save space used by partitions only
DEFAULT_DD_BACKUP_SAVE_USED_PARTITIONS_ONLY: 0
# how many backups to keep
DEFAULT_KEEPBACKUPS: "3"
ansible 的模板模塊將全部剝離，只顯示值而不考慮型別：
DEFAULT_BACKUPPATH=/backup
DEFAULT_BACKUPTYPE=rsync
DEFAULT_ZIP_BACKUP=0
DEFAULT_DD_BACKUP_SAVE_USED_PARTITIONS_ONLY=0
DEFAULT_KEEPBACKUPS=3
DEFAULT_KEEPBACKUPS_DD=0
DEFAULT_KEEPBACKUPS_DDZ=0
模板相當簡單：
DEFAULT_BACKUPPATH={{ DEFAULT_BACKUPPATH }}
DEFAULT_BACKUPTYPE={{ DEFAULT_BACKUPTYPE }}
DEFAULT_ZIP_BACKUP={{ DEFAULT_ZIP_BACKUP }}
DEFAULT_DD_BACKUP_SAVE_USED_PARTITIONS_ONLY={{ DEFAULT_DD_BACKUP_SAVE_USED_PARTITIONS_ONLY }}
DEFAULT_KEEPBACKUPS={{ DEFAULT_KEEPBACKUPS }}
DEFAULT_KEEPBACKUPS_DD={{ DEFAULT_KEEPBACKUPS_DD }}
DEFAULT_KEEPBACKUPS_DDZ={{ DEFAULT_KEEPBACKUPS_DDZ }}
我不想為模板中的每個變數指定應該具有的型別。心絞痛可以從源頭上得到這個，但是怎么做呢？
非常感謝提前和問候
uj5u.com熱心網友回復：
使用這個模板：
DEFAULT_BACKUPPATH={{ DEFAULT_BACKUPPATH if DEFAULT_BACKUPPATH | regex_search('^[0-9] $') != None else '"' ~ DEFAULT_BACKUPPATH ~ '"'}}
DEFAULT_BACKUPTYPE={{ DEFAULT_BACKUPTYPE if DEFAULT_BACKUPTYPE | regex_search('^[0-9] $') != None else '"' ~ DEFAULT_BACKUPTYPE ~ '"'}}
DEFAULT_ZIP_BACKUP={{ DEFAULT_ZIP_BACKUP if DEFAULT_ZIP_BACKUP | regex_search('^[0-9] $') != None else '"' ~ DEFAULT_ZIP_BACKUP ~ '"'}}
DEFAULT_DD_BACKUP_SAVE_USED_PARTITIONS_ONLY={{ DEFAULT_DD_BACKUP_SAVE_USED_PARTITIONS_ONLY if DEFAULT_DD_BACKUP_SAVE_USED_PARTITIONS_ONLY | regex_search('^[0-9] $') != None else '"' ~ DEFAULT_DD_BACKUP_SAVE_USED_PARTITIONS_ONLY ~ '"'}}
DEFAULT_KEEPBACKUPS={{ DEFAULT_KEEPBACKUPS if DEFAULT_KEEPBACKUPS | regex_search('^[0-9] $') != None else '"' ~ DDEFAULT_KEEPBACKUPS ~ '"'}}
DEFAULT_KEEPBACKUPS_DD={{ DEFAULT_KEEPBACKUPS_DD if DEFAULT_KEEPBACKUPS_DD | regex_search('^[0-9] $') != None else '"' ~ DEFAULT_KEEPBACKUPS_DD ~ '"'}}
DEFAULT_KEEPBACKUPS_DDZ={{ DEFAULT_KEEPBACKUPS_DDZ if DEFAULT_KEEPBACKUPS_DDZ | regex_search('^[0-9] $') != None else '"' ~ DEFAULT_KEEPBACKUPS_DDZ ~ '"'}}
您可以使用 jinja2 宏簡化編碼：
{% macro check(name, value='') -%}
{{ name }}={{ value if value | regex_search('^[0-9] $') != None else '"' ~ value ~ '"'}}
{%- endmacro %}
{{ check('DEFAULT_BACKUPPATH', DEFAULT_BACKUPPATH) }}
{{ check('DEFAULT_KEEPBACKUPS', DEFAULT_KEEPBACKUPS) }}
{{ check('DEFAULT_KEEPBACKUPS_DD', DEFAULT_KEEPBACKUPS_DD) }}
{{ check('DEFAULT_KEEPBACKUPS_DDZ', DEFAULT_KEEPBACKUPS_DDZ) }}
轉載請註明出處，本文鏈接：https://www.uj5u.com/net/433967.html