The Capabilities API allows you to directly discover which functions from the V2 API functionality, including the selectable aggregate functions, are supported by the currently configured storage driver. A capabilities query returns a flattened dictionary of properties with associated boolean values - a ‘False’ or absent value means that the corresponding feature is not available in the backend.
Returns a flattened dictionary of API capabilities.
Capabilities supported by the currently configured storage driver.
| Return type: | Capabilities |
|---|
A representation of the API and storage capabilities.
Usually constrained by restrictions imposed by the storage driver.
Data samples:
{
"api": {
"events:query:simple": true
},
"event_storage": {
"storage:production_ready": true
}
}
<value>
<api>
<item>
<key>events:query:simple</key>
<value>true</value>
</item>
</api>
<event_storage>
<item>
<key>storage:production_ready</key>
<value>true</value>
</item>
</event_storage>
</value>
| Type: | dict(unicode: bool) |
|---|
A flattened dictionary of API capabilities
| Type: | dict(unicode: bool) |
|---|
A flattened dictionary of event storage capabilities
Get all event types.
| Return type: | list(unicode) |
|---|
Unused API, will always return 404.
| Parameters: |
|
|---|
Return all trait names for an event type.
| Parameters: |
|
|---|---|
| Return type: | list(TraitDescription) |
Return all instances of a trait for an event type.
| Parameters: |
|
|---|---|
| Return type: | list(Trait) |
Return all events matching the query filters.
| Parameters: |
|
|---|---|
| Return type: | list(Event) |
Return a single event with the given message id.
| Parameters: |
|
|---|---|
| Return type: |
A System event.
Data samples:
{
"event_type": "compute.instance.update",
"generated": "2015-01-01T12:00:00",
"message_id": "94834db1-8f1b-404d-b2ec-c35901f1b7f0",
"raw": {
"status": {
"nested": "started"
}
},
"traits": [
{
"name": "tenant_id",
"value": "7f13f2b17917463b9ee21aa92c4b36d6"
},
{
"name": "request_id",
"value": "req-4e2d67b8-31a4-48af-bb2f-9df72a353a72"
},
{
"name": "service",
"value": "conductor.tem-devstack-01"
}
]
}
<value>
<message_id>94834db1-8f1b-404d-b2ec-c35901f1b7f0</message_id>
<event_type>compute.instance.update</event_type>
<traits>
<item>
<name>tenant_id</name>
<value>7f13f2b17917463b9ee21aa92c4b36d6</value>
</item>
<item>
<name>request_id</name>
<value>req-4e2d67b8-31a4-48af-bb2f-9df72a353a72</value>
</item>
<item>
<name>service</name>
<value>conductor.tem-devstack-01</value>
</item>
</traits>
<generated>2015-01-01T12:00:00</generated>
<raw>{'status': {'nested': 'started'}}</raw>
</value>
| Type: | unicode |
|---|
The type of the event
| Type: | datetime |
|---|
The time the event occurred
| Type: | unicode |
|---|
The message ID for the notification
| Type: | json |
|---|
The raw copy of notification
| Type: | list(Trait) |
|---|
Event specific properties
A Trait associated with an event.
Data samples:
{
"name": "service",
"type": "string",
"value": "compute.hostname"
}
<value>
<name>service</name>
<value>compute.hostname</value>
<type>string</type>
</value>
| Type: | unicode |
|---|
The name of the trait
| Type: | unicode |
|---|
the type of the trait (string, integer, float or datetime)
| Type: | unicode |
|---|
the value of the trait
Panko’s REST API currently supports two types of queries. The Simple Query functionality provides simple filtering on several fields of the Sample type. Complex Query provides the possibility to specify queries with logical and comparison operators on the fields of Sample.
You may also apply filters based on the values of one or more of the resource_metadata field, which you can identify by using metadata.<field> syntax in either type of query. Note, however, that given the free-form nature of resource_metadata field, there is no practical or consistent way to validate the query fields under metadata domain like it is done for all other fields.
Note
The API call will return HTTP 200 OK status for both of the following cases: when a query with metadata.<field> does not match its value, and when <field> itself does not exist in any of the records being queried.
Many of the endpoints above accept a query filter argument, which should be a list of Query data structures. Whatever the endpoint you want to apply a filter on, you always filter on the fields of the Sample type (for example, if you apply a filter on a query for statistics, you won’t target duration_start field of Statistics, but timestamp field of Sample). See api-queries for how to query the API.
Query filter.
Data samples:
{
"field": "resource_id",
"op": "eq",
"type": "string",
"value": "bd9431c1-8d69-4ad3-803a-8d4a6b89fd36"
}
<value>
<field>resource_id</field>
<op>eq</op>
<value>bd9431c1-8d69-4ad3-803a-8d4a6b89fd36</value>
<type>string</type>
</value>
| Type: | unicode |
|---|
The name of the field to test
| Type: | Enum(lt, le, eq, ne, ge, gt) |
|---|
The comparison operator. Defaults to ‘eq’.
| Type: | unicode |
|---|
The data type of value to compare against the stored data
| Type: | unicode |
|---|
The value to compare against the stored data
Event query is similar to simple query, its type EventQuery is actually a subclass of Query, so EventQuery has every attribute Query has. But there are some differences. If a field is one of the following: event_type, message_id, start_timestamp, end_timestamp, then this field will be applied on event, otherwise it will be treated as trait name and applied on trait. See api-queries for how to query the API.
Query arguments for Event Queries.
Data samples:
{
"field": "event_type",
"op": "eq",
"type": "string",
"value": "compute.instance.create.start"
}
<value>
<type>string</type>
<op>eq</op>
<value>compute.instance.create.start</value>
<field>event_type</field>
</value>
| Type: | unicode |
|---|
the type of the trait filter, defaults to string