acid: Add entrypoint script

Signed-off-by: Malfurious <m@lfurio.us>

1 files changed, 52 insertions, 0 deletions

diff --git a/acid/cychedelic b/acid/cychedelic
new file mode 100755
index 0000000..002fb98
--- /dev/null
+++ b/acid/cychedelic
@@ -0,0 +1,52 @@
+#!/bin/bash
+
+# cychedelic ACID daemon
+# cychedelic is an automated Continuous Deployment solution.  See the README for
+# more information.
+
+source config.sh
+
+now() {
+    date '+%s'
+}
+
+should_restart() {
+    curtime=$(now)
+    runtime=$((curtime-starttime))
+    [ $runtime -gt $CYCHE_MAINT_TIME ]
+}
+
+update() {
+    forceopt="--force-self"
+    selfopt="--self"
+
+    for line in "${CYCHE_SERVICES[@]}"; do
+        hash=$(cyche-source $line)
+
+        if [ $? -ne 0 ] || [ "$1" == "$forceopt" ]; then
+            read -r -a arr <<< "$line"
+            cyche-build "${arr[0]}" "$hash" $selfopt
+        fi
+
+        forceopt="--force"
+        selfopt=""
+    done
+}
+
+# startup: A restart of the ACID daemon usually indicates an elapse of the
+# $CYCHE_MAINT_TIME period, so rebuild services and perform cleanup now.  We
+# sleep briefly at the beginning to allow the previous cychedelic instance time
+# to die.
+sleep "$CYCHE_STARTUP_TIME"
+update --force
+docker system prune --force --all
+starttime=$(now)
+
+# monitor source changes
+while ! should_restart; do
+    sleep "$CYCHE_POLL_TIME"
+    update
+done
+
+# force self-upgrade to trigger maintenance activities
+update --force-self