Filter Parameter
The filter query parameter is used to filter items in a resource collection to return a subset of resources in a response. The subset includes only those resources that satisfy parameter value specified in the query.
To filter a resource collection use the filter query parameter in the following format:
| GET https://hostname>:<port>/api/<version>/<endpoint>?filter=[{"property":"<property>","operator":"<operator>","ignorecase":"<boolean>","value":"<value>"}] | 
where:
- <endpoint> is the resource collection endpoint.
- <property> is the resource property name.
- <operator> is a relational or logical operator.
- ignorecase defines whether to ignore letter case in the value parameter.
- <value> is a resource property value.
The Veeam Backup for GCP REST API supports the following operators:
| Operator | Description | 
|---|---|
| equals | Returns resources that match the specified property value. | 
| contains | Returns resources that contain the value specified for a property. | 
| exclusiveOr | Returns resources that match one of the filter expressions. | 
| notEquals | Returns resources that do not match the specified property value. | 
| greaterThan | Returns resources with the property value that is greater than the specified value. | 
| greaterThanOrEqual | Returns resources with the property value that is greater than or equal to the specified value. | 
| lessThan | Returns resources with the property value that is less than the specified value. | 
| lessThanOrEqual | Returns resources with the property value that is less than or equal to the specified value. | 
| in | Returns resources that match at least one of the values specified for a property. | 
| and | Returns resources that match all the specified property values. | 
| andAlso | Returns resources that match all the specified property values. | 
| or | Returns resources that match at least one of the specified property values. | 
| orElse | Returns resources that match at least one of the specified property values. | 
| like | [Applies only to properties with the string data type] Returns resources that match a specified pattern in the property value. | 
To group multiple filter expressions, you can include them into the <items> parameter in the following format:
| GET https://<hostname>:<port>/api/<version>/<endpoint>?filter=[{"items":[{"property":"<property>","operator":"<operator>","ignorecase":<boolean>,"value":"<value>"},{"property":"<property>","operator":"<operator>","ignorecase":<boolean>,"value":"<value>"}],"operator":"<operator>"}] | 
Examples
To get all VM instances with the vm-gcp name pattern, send the following request:
| GET https://127.0.0.1:13140/api/v1/vmInstances?filter=[{"property":"name","operator":"like","ignorecase":true,"value":"vm-gcp"}] | 
To get all VM instances with the vm-gcp name pattern and e2-medium instance type, send the following request:
| GET https://127.0.0.1:13140/api/v1/vmInstances?filter=[{"items":[{"property":"instanceType","operator":"equals","ignorecase":true,"value":"e2-medium"},{"property":"name","operator":"like","ignorecase":true,"value":"vm-gcp"}],"operator":"and"}] | 
To learn more about properties of a specific resource that can be used as filter query parameters, see the Resource Reference.