Added initial nginx services

- Proxy allows ingress traffic to be sent to another element in
service mesh
- Mirroring is also in the default configuration
- Default configuration is to proxy to a clover-server and mirror
to snort-ids
- A location_path (URI in HTTP requests) can be reconfigured to
restrict proxing; default to '/'
- A proxy_path can be reconfigured to specify an alternate destination
- A mirror path can be reconfigured to specify where traffic
will be spanned
- The default server_port (listen port) for the proxy is 9180 but can be
reconfigured
- The default server_name is http-proxy but can be reconfigured
- Reconfiguration is done over GRPC with jinja2 template for nginx
- Currently snort ids sends alerts to proxy with stub code in GRPC

- Refactored the code to have a nginx base with subservices
- Proxy, Load Balancer (lb), and Server can share code - mainly GRPC
server
- Nginx subservices have separate docker builds

- Improved build scripts for CI
- Render yaml manifests dynamically
- Improve nginx_client for runtime modifications (but not really
useful yet)

Change-Id: Icbff6890021bcc8a8da4690c9261205d6e1ca43a
Signed-off-by: Eddie Arrage <eddie.arrage@huawei.com>

3 files changed, 39 insertions, 0 deletions

diff --git a/samples/services/nginx/docker/process/grpc_process.sh b/samples/services/nginx/docker/process/grpc_process.sh
new file mode 100755
index 0000000..cc8aa60
--- /dev/null
+++ b/samples/services/nginx/docker/process/grpc_process.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+#
+# Copyright (c) Authors of Clover
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+
+python grpc/nginx_grpc_server.py $1
+
diff --git a/samples/services/nginx/docker/process/nginx_process.sh b/samples/services/nginx/docker/process/nginx_process.sh
new file mode 100755
index 0000000..00edc66
--- /dev/null
+++ b/samples/services/nginx/docker/process/nginx_process.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+#
+# Copyright (c) Authors of Clover
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+
+service nginx restart
+
diff --git a/samples/services/nginx/docker/process/start_process.sh b/samples/services/nginx/docker/process/start_process.sh
new file mode 100755
index 0000000..b84d2d6
--- /dev/null
+++ b/samples/services/nginx/docker/process/start_process.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+#
+# Copyright (c) Authors of Clover
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+
+# Start the nginx process
+./process/nginx_process.sh
+
+# Start the grpc server
+./process/grpc_process.sh $1 -D