4 Commits

Author SHA1 Message Date
Alex Ellis
bd39b9267a Update comments
- updates comments and adds where missing
- updates locks so that unlock is done via defer instead of
at the end of the statement
- extracts timeout variable in two places
- remove makeClient() unused method from metrics package

No-harm changes tested via go build.

Signed-off-by: Alex Ellis (VMware) <alexellis2@gmail.com>
2018-10-03 13:16:28 +01:00
Alex Ellis (VMware)
af0ccc9a45 Add Copyright headers where missing in handlers
- Added Copyright in handlers where missing
- Renamed Project to Author(s) where needed

Signed-off-by: Alex Ellis (VMware) <alexellis2@gmail.com>
2018-09-03 13:26:58 +01:00
Alex Ellis (VMware)
9512f09d2b Refactor scaling to use existing code
Existing code has been used for scaling up and querying replicas.
This meant the new code was deleted and there is less duplication
now.

The cache store a whole query response rather than just the
available replica count and the tests were updated. This has been
tested with Docker swarm and the image:
 openfaas/gateway:scale-17-07-2018

This feature now needs the env-var of scale_from_zero to be enabled
in order to turn on the scaling behaviour.

Signed-off-by: Alex Ellis (VMware) <alexellis2@gmail.com>
2018-07-20 11:39:36 +01:00
Alex Ellis (VMware)
e67d45caa1 Add feature: scale from zero to 1 replicas
This change allows functions to be "idled" or scaled to zero
replicas and then be invoked later on. There is a penalty to
scaling up - the API gateway proxy will block until the function
is ready.

A cache is included to off-set the calls to upstream API to check
on readiness along with unit tests.

Testing via scaling to zero replicas and then invoking function.
On Swarm I observed 3 seconds on an Intel Nuc i5 for scaling back
from zero replicas.

Signed-off-by: Alex Ellis (VMware) <alexellis2@gmail.com>
2018-07-20 11:39:36 +01:00