Release passes HTTP Host header which was absent in the watchdog.

Changelog:

• Expose scale-function endpoint via the gateway @alexellis

This change is described in Swagger and exposes the /system/scale-function endpoint (protected by auth, if enabled)

For OpenFaaS on Docker Swarm as of 0.8.6 we will enable basic-auth by default if using ./deploy_stack.sh

Read more: https://docs.openfaas.com/deployment/docker-swarm/

Gateway changes:

• Enable basic auth on gateway #691

Watchdog:

• None

• Gateway
  Add health and info endpoints #690

• Watchdog
  No changes

Gateway UI:

• Message for people without JavaScript turned on #647
• A helpful landing page for no function selected / no functions deployed #512

This release updates container images to the latest versions so the whole release can be checked out at a known version.

• Feature: Add direct_functions mode to gateway for tuning #592
• Fix bug in watchdog for default value of combine_output #601
• Watchdog gains graceful shutdown via #591

• Logging of forwarded calls is reduced from three lines to 1 with #577
• Watchdog gains graceful shutdown via #591
• Watchdog gains healthcheck over HTTP via #583
• Fix bug in watchdog #601

This release contains two changes for the watchdog:

• port environmental variable is enabled for local debugging outside of Docker
• combine_output can be set to false so that stderr goes to the container logs rather than the function response. By default this remains set to true to maintain compatibility.

Read more in updated Watchdog reference

This release adds function readiness to the OpenFaaS UI meaning a function cannot be invoked until it has been shown to be available by the cluster.

• Move to http.Client for reverse proxying #554

• Expose endpoint from back-end provider to query individual function's data #545 via @alexellis
• Extend model to support AvailableReplicas #546 via @imikushin

• Allow timeouts to be specified in Golang durations via @viveksyngh

• Upgrades to Prometheus 2.0
• Moves Swarm to external provider model via new repository https://github.com/openfaas/faas-swarm

This fixes the gateway to query Prometheus 1.0 and 2.0 correctly in 262b0af

PRs merged:

• #440 (enhancement to store to link back to function's Git repo)
• #435 (requested by Citrix for internal product)
• #292 (Swarm Secrets support - work by @LucasRoesler @ Contiamo)

Breaking changes

The Response Content-Type used to be updated to match the Request Content-Type - this is no longer the case so you'll have to start specifying which Content-Type your function returns via an environmental variable content_type.

This can be done via the CLI, RESTful API or via the stack.yml file in the environmental variables section.

Docs

• Guide on using Docker Swarm Secrets with OpenFaaS

https://github.com/openfaas/faas/blob/master/guide/secure_secret_management.md

Function store updates:

• #434 Offer "Download" option in UI and corresponding label for specifying a filename for responses. I.e. mp3 for TTS / .png for generating QR codes.

Related updates:

• #432 Add X-Call-Id middleware

Releases the App Store (Function Store)

Collaboration between Alex Ellis and @kenfdev #413

Version bump for NATS Streaming producer

UI enhancements

• #397
• #399

Adds Memory requests & limits via #385

Also ships: #382 #375 #381

Enables GET method for functions including new version of watchdog.

• Return labels in functions list endpoint #363
• Record fork/duration in watchdog logs #360
• Enable GET method for functions #319

Log fork duration in watchdog #360

Support Labels for functions

Enable pass-through of secret names for Kubernetes back-end and future support for Docker Swarm.

Error handling in UI plus 0.6.6-beta1

• X-Header fix:

d2b1524

• Swarm and external provider update function

#208 (review)

• FavIcon

d7bc269

Docker image: functions/gateway:0.6.6-beta1

This release adds support for:

• metrics for external providers
• collated metrics across all gateway replicas