From fd0bbe677ef5b2acfa256f6e6393d63ca9988be8 Mon Sep 17 00:00:00 2001
From: Gilles Filippini <pini@pini.fr>
Date: Fri, 9 Apr 2021 14:00:05 +0000
Subject: [PATCH] [build] docker: add entrypoint script
First of all, this script moves the duniter configuration file 'conf.json'
into the '/etc/duniter' volume, so that one could delete the '/var/lib/duniter'
volume without losing the configuration.
A symbolic link is set up into /var/lib/duniter/duniter_default to point to
the new path:
/var/lib/duniter/duniter_default/conf.json -> /etc/duniter/conf.json
Then, this script enables the folowing environment variables:
* DUNITER_MANUAL_CONFIG (boolean, default = false)
When set to 'true' (or 'yes', or '1'), the script waits until the file
'/etc/duniter/conf.json.orig' is present before starting the duniter
service. Here is the workflow when enabled:
1. wait for '/etc/duniter/conf.json.orig'
2. if this file was changed since the previous startup:
2.1. Save 'conf.json' to 'conf.json.old'
2.2. Replace 'conf.json' with 'conf.json.orig'
2.3. Save the new file's checksum to compare with at next startup
3. continue the startup sequence
When set to false, the startup sequence continues.
Requires 'jq' to sort the files before comparing them.
* DUNITER_AUTO_SYNC (boolean, default = false)
Requires 'DUNITER_SYNC_HOST'.
When set to 'true' (or 'yes', or '1') and the folder
'/var/lib/duniter/duniter_default/data' doesn't exist, a 'duniter sync'
command will be issued before starting the service.
When set to false, the service is started directly.
* DUNITER_SYNC_HOST (hostname, default = "")
This is the 'host:port' parameter to use with 'duniter sync' when
'DUNITER_AUTO_SYNC' is enabled.
The synchronization won't be launched when the variable is not defined
or empty.
---
release/docker/Dockerfile | 8 +++-
release/docker/docker-entrypoint.sh | 70 +++++++++++++++++++++++++++++
2 files changed, 77 insertions(+), 1 deletion(-)
create mode 100755 release/docker/docker-entrypoint.sh
diff --git a/release/docker/Dockerfile b/release/docker/Dockerfile
index f45486c75..e609085bd 100644
--- a/release/docker/Dockerfile
+++ b/release/docker/Dockerfile
@@ -36,6 +36,9 @@ RUN PATH=${HOME}/.cargo/bin:${PATH} \
FROM node:10-alpine
+# install jq
+RUN apk add jq
+
# create group and user duniter
RUN addgroup -S -g 1111 duniter && \
adduser -SD -h /duniter -G duniter -u 1111 duniter
@@ -49,6 +52,9 @@ RUN cp /duniter/duniter/docker.sh /usr/bin/duniter && \
chmod +x /usr/bin/duniter && \
chown duniter:duniter /usr/bin/duniter
+# copy entrypoint
+COPY release/docker/docker-entrypoint.sh /
+
# create volumes
VOLUME /var/lib/duniter
VOLUME /etc/duniter
@@ -60,5 +66,5 @@ EXPOSE 9220 10901 20901
USER duniter
WORKDIR /duniter
-ENTRYPOINT ["/usr/bin/duniter"]
+ENTRYPOINT ["/docker-entrypoint.sh"]
CMD []
diff --git a/release/docker/docker-entrypoint.sh b/release/docker/docker-entrypoint.sh
new file mode 100755
index 000000000..ed93a0c0c
--- /dev/null
+++ b/release/docker/docker-entrypoint.sh
@@ -0,0 +1,70 @@
+#!/bin/sh
+
+home=/var/lib/duniter
+config=/etc/duniter
+home_default=$home/duniter_default
+
+function boolean () {
+ echo "$1" | sed -E 's/^(true|yes|1)$/true/i'
+}
+
+manual_config="$(boolean "${DUNITER_MANUAL_CONFIG:-false}")"
+auto_sync="$(boolean "${DUNITER_AUTO_SYNC:-false}")"
+
+# Use path /etc/duniter/conf.json
+if ! [ -f "$config/conf.json" ] && [ -f "$home_default/conf.json" ]; then
+ mv "$home_default/conf.json" "$conf/conf.json"
+fi
+mkdir -p "$home/duniter_default"
+ln -fs "$config/conf.json" "$home_default/conf.json"
+
+# Manual config when enabled
+if [ "$manual_config" = true ]; then
+ # Do not start until a configuration file was initialized
+ while ! [ -f "$config/conf.json.orig" ]; do
+ echo "Waiting for initial configuration file... Please copy your configuration file to '$config/conf.json.orig'"
+ sleep 10
+ done
+ echo "Configuration file found. Continuing..."
+ # Use new conf.json.orig when changed
+ md5_file="$config/conf.json.orig.md5"
+ if ! md5sum -c "$md5_file"; then
+ if [ -f "$config/conf.json" ]; then
+ echo "Backing up old configuration file to '$config/conf.json.old'..."
+ mv $config/conf.json $config/conf.json.old
+ fi
+ echo "Installing new configuration file..."
+ cp "$config/conf.json.orig" "$config/conf.json"
+ md5sum "$config/conf.json.orig" >"$md5_file"
+ fi
+ # Log differences between initial, old and current conf file
+ jq --sort-keys -r . "$config/conf.json.orig" >"$config/conf.json.orig.sorted"
+ jq --sort-keys -r . "$config/conf.json" >"$config/conf.json.sorted"
+ if [ -f "$config/conf.json.old" ]; then
+ jq --sort-keys -r . "$config/conf.json.old" >"$config/conf.json.old.sorted"
+ if ! diff -q "$config/conf.json.old.sorted" "$config/conf.json.orig.sorted"; then
+ diff -u "$config/conf.json.old.sorted" "$config/conf.json.orig.sorted"
+ fi
+ fi
+ if ! diff -q "$config/conf.json.orig.sorted" "$config/conf.json.sorted"; then
+ diff -u "$config/conf.json.orig.sorted" "$config/conf.json.sorted"
+ fi
+fi
+
+# Auto start synchronization when enabled and starting from scratch
+if [ "$auto_sync" = true ]; then
+ if ! [ -d "$home_default/data" ]; then
+ echo "No 'data' folder. "
+ if [ -z "$DUNITER_SYNC_HOST" ]; then
+ echo "DUNITER_SYNC_HOST undefined. Can't start synchronization!"
+ else
+ echo "Starting synchronization..."
+ /usr/bin/duniter sync --home "$home" "$DUNITER_SYNC_HOST"
+ fi
+ fi
+fi
+
+# Start duniter
+echo Starting duniter with:
+echo /usr/bin/duniter "$@"
+/usr/bin/duniter "$@"
--
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