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* Add screenshots and sample code for configuring job parameters. * Add placeholder files for tutorials. * Fix markdown linting in most files. [CL 30893696 by ben marsh in ue5-main branch]
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Horde > Configuration > Conditions
Conditions
Introduction
Several parts of Horde allow specifying a query condition to select particular agents for an operation. These condition strings are stored in JSON configuration flies as a string, and have a C-like syntax.
Agents report a large number of properties collected from their characteristics, which can be viewed from the
Agents page on the Horde dashboard. Agents may report multiple values for a particular key, such as
PlatformGroup: Desktop and PlatformGroup: Unix. Conditions evaluate to true if there is any value for a particular
key that satisfies the expression.
Values
Values in condition strings are dynamically typed, and coerced into the correct format for the operation performed on
them. For example, the integer 0, the strings '0' and 'false', and the boolean false are functionally
equivalent.
Integers may be given the following binary order-of-magnitude suffixes as a shorthand:
| Suffix | Size |
|---|---|
| Kb | 2^10 (1,024) |
| Mb | 2^20 (1,048,576) |
| Gb | 2^30 (1,073,741,824) |
| Tb | 2^40 (1,099,511,627,776) |
Operators
Operators follow standard C rules of precedence. Sub-expressions may be enclosed in ( parentheses ).
Boolean Operators
| Operator | Description |
|---|---|
true |
Boolean literal |
false |
Boolean literal |
!A |
Negation |
A && B |
Logical AND |
A || B |
Logical OR |
A == B |
Equality |
A != B |
Inequality |
Integer Operators
| Operator | Description |
|---|---|
1234 |
Integer literal |
1234kb |
Integer literal with binary size suffix (evaluates to 1,263,616). |
A == B |
Test for equality |
A != B |
Test for inequality |
A < B |
Test if one value is less than another |
A <= B |
Test if one value is less than or equal to another |
A > B |
Test if one value is greater than another |
A >= B |
Test if one value is greater than or equal to another |
A == B |
Test for equality |
String Operators
| Operator | Description |
|---|---|
'value' |
String literal |
"value" |
String literal |
A == B |
Test if two strings compare equal for equality. Comparison is case-insensitive. |
A != B |
Test if two strings are different. Comparison is case-insensitive. |
A ~= B |
Test if a string (A) matches a regex (B). The regex comparison is case-insensitive. |