Introduces a single-flight call to a function's health
endpoint to verify that it is registered with an Istio
sidecar (Envoy) before letting the invocation through.
Results are cached for 5 seconds, before a probe is
required again.
Tested without Istio, with probe_functions environment
variable set to true, I saw a probe execute in the logs.
Fixes: #1721 for Istio users.
Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alex@openfaas.com>
When coupled with the latest version of faas-netes, the gateway
can now invoke, query and deploy functions into alternative
namespaces.
Tested e2e by creating a namespace "fn" and deploying, then
invoking a function deployed there and in the default namespace.
Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>
Requested by @LucasRoesler - removes headers detailed in HTTP
spec which are not supposed to be forwarded by proxies or
gateways.
Signed-off-by: Alex Ellis <alexellis2@gmail.com>
- remove http client host override fix#847
- X-Forwarded-For and X-Forwarded-Host are usually handled by the ingress
controller, if those headers are not set then the gateway will create them
Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>
This reviews the code and fixes up suggestions made by team for
the HTTP paths PR #789.
- Removed feature-flag (this is backwards-compatible, so I see
no value in adding the flag)
- There was a URL transform happening for calls proxied to the
back end, I changed this for the nil-transform - i.e. it does not
change anything in the URL
- Introduced variables to describe the regex indicies used in
the URL trimming.
Tested with Docker Swarm with a ruby-microservice, with
system calls and with function calls using the UI.
Signed-off-by: Alex Ellis (VMware) <alexellis2@gmail.com>
Previously, only the query string of the URL was passed through the Gateway.
With this change, the entire path requested by the client is passed through as well as the query string.
While fwatchdog already supported passing the path through, in practice this would not happen
since the Gateway would have swallowed it before forwarding the request to the watchdog.
With this change, the path portion after the function name is added to the Http_Path environment
variable, provided that cgiHeaders are enabled. This is similar to the of-watchdog equivalent.
Signed-off-by: Thomas E Lackey <telackey@bozemanpass.com>
Host HTTP header was not propagated to the function because it is not
a part of http.Request.Header map.
Signed-off-by: Dmitri Rubinstein <dmitri.rubinstein@googlemail.com>
**What**
- When determining the service name of the function, remove any trailing
slashes, the slashes are not allowed in service names for either Swarm
or K8S, so this can only be a left over from the url path
**Why**
- This was preventing service resolution, and hence failed functions,
when the function was called with a trailing slash
Fixes#714
Signed-off-by: Lucas Roesler <roesler.lucas@gmail.com>
HTTP proxy was not passing query-string upstream. This change
reinstates the behaviour through TDD - adding test coverage and
automated regression testing.
Signed-off-by: Alex Ellis (VMware) <alexellis2@gmail.com>
