single-server-binary (#557)

Changes:
* All services are now executed from single binary, `dispatch-server`.
This allows easier management of middlewares, and also allows `dispatch-server local` to exist (added earlier).
* All images (but event-sidecar) have been merged into single image "dispatch-server".
* Configuration has been unified: no more `pkg/config`,
there is a single place that reads config file, flags and environment variables.
* Services now only listen on HTTP port 80, since TLS is terminated at Ingress
(But enabling it back will be easy).
* Charts have been adjusted, and most importantly, cleaned up from unused volumes
(e.g. API manager had volume with Docker socket mounted).
* Config files in charts are slimmed down and are using YAML instead of JSON for better readability.
* Application manager chart has been removed for now. We don't use it,
and it's been broken for some time now (e2e tests for application manager have been gone for couple releases).
* Some services have been "deglobalized" - the global flags are gone,
and those services that were using global variables have been converted to use
struct-level variables that are configured during initialization.

Makefile

@@ -97,9 +97,8 @@ run-dev: ## run the dev server
 	@./scripts/run-dev.sh
 
 CLI = dispatch
-SERVICES = api-manager application-manager event-manager \
-           function-manager identity-manager image-manager secret-store event-sidecar \
-           service-manager
+
+SERVICES = dispatch-server event-sidecar
 
 DARWIN_BINS = $(foreach bin,$(SERVICES),$(bin)-darwin)
 LINUX_BINS = $(foreach bin,$(SERVICES),$(bin)-linux)

charts/dispatch/charts/api-manager/templates/deployment.yaml

@@ -23,20 +23,17 @@ spec:
     spec:
       containers:
         - name: {{ .Chart.Name }}
-          image: "{{ default .Values.global.image.host .Values.image.host }}/{{ .Values.image.repository }}:{{ default .Values.global.image.tag .Values.image.tag }}"
+          image: "{{ default .Values.global.image.host .Values.image.host }}/{{ default .Values.global.image.repository .Values.image.repository }}:{{ default .Values.global.image.tag .Values.image.tag }}"
           imagePullPolicy: {{ default .Values.global.pullPolicy .Values.image.pullPolicy }}
           args:
+            - "api-manager"
             - "--host=0.0.0.0"
             - "--port={{ .Values.service.internalPort }}"
             - "--db-file={{ default .Release.Name .Values.global.db.release }}-{{ .Values.global.db.host }}.{{ default .Release.Namespace .Values.global.db.namespace }}:{{ .Values.global.db.port }}"
             - "--db-backend={{ .Values.global.db.backend }}"
             - "--db-username={{ .Values.global.db.user }}"
             - "--db-password={{ .Values.global.db.password }}"
             - "--db-database={{ .Values.global.db.database }}"
-            - "--tls-port=443"
-            - "--tls-certificate=/data/tls/tls.crt"
-            - "--tls-key=/data/tls/tls.key"
-            - "--gateway={{ .Values.gateway.name }}"
             - "--gateway-host={{ .Values.gateway.host }}"
             - "--function-manager={{ .Release.Name }}-function-manager.{{ .Release.Namespace }}"
             - "--resync-period={{ .Values.resyncPeriod }}"
@@ -64,28 +61,8 @@ spec:
                 value: cookie
             initialDelaySeconds: 10
             periodSeconds: 3
-          volumeMounts:
-            - mountPath: "/data/{{ template "name" . }}"
-              name: {{ template "fullname" . }}
-            - mountPath: "/var/run/docker.sock"
-              name: {{ template "fullname" . }}-docker
-            - mountPath: "/data/tls"
-              name: tls
-              readOnly: true
-          env:
-            - name: DOCKER_API_VERSION
-              value: "1.24"
           resources:
 {{ .Values.resources | default .Values.global.resources | toYaml | indent 12 }}
-      volumes:
-        - name: {{ template "fullname" . }}
-          emptyDir: {}
-        - name: {{ template "fullname" . }}-docker
-          hostPath:
-            path: /var/run/docker.sock
-        - name: tls
-          secret:
-            secretName: {{ default .Values.global.tls.secretName .Values.ingress.tls.secretName }}
 {{- if .Values.nodeSelector }}
       nodeSelector:
 {{ toYaml .Values.nodeSelector | indent 8 }}

charts/dispatch/charts/api-manager/values.yaml

@@ -4,14 +4,13 @@
 replicaCount: 1
 maxUnavailable: 0
 maxSurge: 1
-image:
+image: {}
   # host: vmware
-  repository: dispatch-api-manager
+  # repository: dispatch-server
   # tag: latest
   # pullPolicy: Always
 
 gateway:
-  name: kong
   host: "http://api-gateway-kongadmin.kong:8001"
 
 service:
@@ -41,4 +40,4 @@ resources: {}
   #requests:
   #  cpu: 100m
   #  memory: 128Mi
-resyncPeriod: 10
+resyncPeriod: 10s

charts/dispatch/charts/event-manager/templates/cluster-role.yaml

@@ -1,5 +1,4 @@
 {{- if .Values.global.rbac.create -}}
-# A cluster role for create/get/list/delete/update secrets
 apiVersion: rbac.authorization.k8s.io/v1beta1
 kind: ClusterRole
 metadata:

charts/dispatch/charts/event-manager/templates/config-map.yaml

@@ -4,11 +4,7 @@ metadata:
   name: {{ template "fullname" . }}
   namespace: {{ .Release.Namespace }}
 data:
-  organization: {{ .Values.global.organization }}
-  config.json: |-
-    {
-      "rabbitmq": {
-        "url": "{{ .Values.queue.rabbitmq.url }}",
-        "exchangeName": "{{ .Values.queue.rabbitmq.exchangeName }}"
-      }
-    }
+  config.yaml: |-
+    ---
+    events:
+      rabbitmq-url: {{ .Values.queue.rabbitmq.url }}