Initial set of builds for Cadmium

.gitignore

@@ -0,0 +1,2 @@
+/cadmium
+/source

.gitlab-ci.yml

@@ -0,0 +1,23 @@
+image: golang:1.10
+
+build:
+  stage: build
+  variables:
+    CADDY_TAG: $CI_COMMIT_TAG
+  script:
+    - scripts/download "$(dirname $CI_PROJECT_URL)/caddy/-/archive/${CADDY_TAG}/caddy-${CADDY_TAG}.tar.gz"
+    - mkdir -p "$GOPATH/src/github.com/mholt"
+    - ln -s "$(pwd)/source" "$GOPATH/src/github.com/mholt/caddy"
+    - scripts/build ${CADDY_TAG}
+  artifacts:
+    paths:
+      - cadmium
+      - source
+  only:
+    - tags
+    - api
+    - pipelines
+    - triggers
+    - web
+
+

patches/collection.go

@@ -0,0 +1,56 @@
+// package telemetry implements a stub of the Caddy telemetry client package API
+// found at https://github.com/mholt/caddy/tree/master/telemetry
+//
+// It doesn't do anything. Replacing the telemetry code with a stub is the best
+// way to ensure compatibility with plugins is maintained. The
+// `-disabled-metrics` runtime flag doesn't work. The compile-time
+// `enableTelemetry` flag is OK, but this is better.
+
+package telemetry
+
+import (
+	"github.com/google/uuid"
+)
+
+func Init(instanceID uuid.UUID, disabledMetricsKeys []string) {
+
+}
+
+func StartEmitting() {
+
+}
+
+func StopEmitting() {
+
+}
+
+func Reset() {
+}
+
+func Set(key string, val interface{}) {
+
+}
+
+func SetNested(key, subkey string, val interface{}) {
+
+}
+
+func Append(key string, value interface{}) {
+
+}
+
+func AppendUnique(key string, value interface{}) {
+
+}
+
+func Add(key string, amount int) {
+
+}
+
+func Increment(key string) {
+
+}
+
+func FastHash(input []byte) string {
+	return ""
+}

patches/run.go.diff

@@ -0,0 +1,27 @@
+--- a/caddy/caddymain/run.go	2018-07-12 01:02:24.244606006 +0100
++++ b/caddy/caddymain/run.go	2018-07-12 01:02:48.584895759 +0100
+@@ -117,7 +117,7 @@
+ 		os.Exit(0)
+ 	}
+ 	if version {
+-		fmt.Printf("%s %s (unofficial)\n", appName, appVersion)
++		fmt.Printf("%s %s\n", appName, appVersion)
+ 		if devBuild && gitShortStat != "" {
+ 			fmt.Printf("%s\n%s\n", gitShortStat, gitFilesModified)
+ 		}
+@@ -490,7 +490,7 @@
+ 	return envMap, nil
+ }
+ 
+-const appName = "Caddy"
++const appName = "Cadmium"
+ 
+ // Flags that control program flow or startup
+ var (
+@@ -519,4 +519,4 @@
+ 	gitFilesModified string // git diff-index --name-only HEAD
+ )
+ 
+-const enableTelemetry = true
++const enableTelemetry = false
+lupine@gitlab-t470p:~/Desktop/caddy

scripts/build

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+if [ "x$1" = "x" ]; then
+	echo "Usage: $0 <Tag>"
+	exit 1
+fi
+
+echo "Building Cadmium $1..."
+
+cm="github.com/mholt/caddy/caddy/caddymain"
+go build \
+  -o cadmium \
+  -ldflags "-X \"$cm.gitTag=$1\" -X \"$cm.gitNearestTag=$1\"" \
+  github.com/mholt/caddy/caddy
+

scripts/download

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+if [ "x$1" = "x" ]; then
+	echo "Usage: $0 <Tarball URL>"
+	exit 1
+fi
+
+if [ -e "source" ]; then
+	echo "source/ directory already exists, remove it first"
+	exit 1
+fi
+
+curl -L "$1" | tar -xzf -
+mv caddy* source
+
+# Disable telemetry in run.go and rename to Cadmium
+patch -d source -p1 <"$(pwd)/patches/run.go.diff"
+
+# Replace telemetry with a stub
+rm -r source/telemetry
+mkdir source/telemetry
+cp patches/collection.go source/telemetry/collection.go
+
+