4 files changed, 70 insertions, 10 deletions
diff --git a/packaging/docker/catlfish-dev/Dockerfile b/packaging/docker/catlfish-dev/Dockerfile
index 11ebed5..241c58d 100644
--- a/packaging/docker/catlfish-dev/Dockerfile
+++ b/packaging/docker/catlfish-dev/Dockerfile
@@ -2,18 +2,29 @@
 # /usr/local/etc/catlfish/catlfish.config so mounting
 # /usr/local/etc/catlfish is recommended. This can be done using the
 # `-v' flag to `docker run'.
-
+#
 # NOTE: The directory on the host system that's mounted at
 # /var/local/db/catlfish in the container has to be writable by a host
 # user with uid 147.
-
+#
+# Example, running a frontend node:
+# $ docker run -v /etc/catlfish:/usr/local/etc/catlfish:ro catlfish
+#       frontend /usr/local/catlfish
+#
+# Example, running a merge node:
 # $ docker run -v /etc/catlfish:/usr/local/etc/catlfish:ro catlfish
+#       merge /usr/local/catlfish /var/local/db/catlfish-merge
 
 FROM erlang
 RUN apt-get update
 RUN echo 'debconf debconf/frontend select noninteractive' | debconf-set-selections
+
+# For building.
 RUN apt-get -y -q install gcc git make curl
 
+# For merge.
+RUN apt-get -y -q install git python-ecdsa python-yaml
+
 # Build dependencies in /usr/local/src.
 WORKDIR /usr/local/src
 
@@ -41,10 +52,8 @@ RUN make -C plop
 RUN git clone https://git.nordu.net/catlfish.git
 RUN make -C catlfish PREFIX=/usr/local all release
 
-# Config dir and database dir are mounted from host using `-v' to
-# 'docker run'.
+# Config dir is mounted from host using `-v' to 'docker run'.
 VOLUME /usr/local/etc/catlfish
-VOLUME /var/local/db/catlfish
 
 # Create a catlfish user.
 RUN groupadd --gid 147 catlfish
@@ -54,12 +63,12 @@ RUN useradd --uid 147 --gid 147 catlfish
 # /var/run/catlfish and not in /usr/local/etc/catlfish, so symlink.
 RUN mkdir /var/run/catlfish
 WORKDIR /var/run/catlfish
-RUN mkdir erlang_log sasl_log supervisord_log
+RUN mkdir erlang_log sasl_log merge_log
 RUN chown -R catlfish:catlfish /var/run/catlfish
 RUN ln -s /usr/local/etc/catlfish/catlfish.config /var/run/catlfish/
 
-# Run supervisord.
-ADD supervisord.conf /etc/supervisor/
+ADD merge.sh /usr/local/catlfish/
+ADD start.sh /var/run/catlfish/
 WORKDIR /var/run/catlfish
 USER catlfish
-CMD ["/usr/bin/supervisord", "-c", "/etc/supervisor/supervisord.conf"]
+ENTRYPOINT ["/var/run/catlfish/start.sh"]
diff --git a/packaging/docker/catlfish-dev/merge.sh b/packaging/docker/catlfish-dev/merge.sh
new file mode 100755
index 0000000..304d8a4
--- /dev/null
+++ b/packaging/docker/catlfish-dev/merge.sh
@@ -0,0 +1,29 @@
+#! /bin/sh
+
+# Default intervals
+# - 5m before first merge
+# - 20m between subsequent merges
+S1=300; [ -n "$1" ] && S1=$1
+S2=1200; [ -n "$2" ] && S2=$2
+
+DBDIR="$3"
+
+[ -d $DBDIR ] || mkdir $DBDIR
+[ -d $DBDIR/chains ] || mkdir $DBDIR/chains
+[ -e $DBDIR/logorder ] || touch $DBDIR/logorder
+
+echo "merge: ERL_LIBS: $ERL_LIBS"
+
+date
+echo "merge: waiting $(expr $S1 / 60)m$(expr $S1 % 60)s before merging for the first time"
+sleep $S1
+
+while true; do
+    echo "$0: merging"
+    date
+    python /usr/local/src/catlfish/tools/merge.py \
+           --config /usr/local/etc/catlfish/system.cfg \
+           --localconfig /usr/local/etc/catlfish/merge.cfg
+    echo "merge: waiting $(expr $S2 / 60)m$(expr $S2 % 60)s before merging again"
+    sleep $S2
+done
diff --git a/packaging/docker/catlfish-dev/start.sh b/packaging/docker/catlfish-dev/start.sh
new file mode 100755
index 0000000..8b3697d
--- /dev/null
+++ b/packaging/docker/catlfish-dev/start.sh
@@ -0,0 +1,22 @@
+#! /bin/sh
+
+role=$1; [ -n "$1" ] && shift
+erlbase=$1; [ -n "$1" ] && shift
+database=$1; [ -n "$1" ] && shift
+
+case $role in
+    frontend|storage|signing)
+        $erlbase/bin/run_erl \
+            /var/run/catlfish/ \
+            /var/run/catlfish/erlang_log/ \
+            "exec $erlbase/bin/erl -config catlfish"
+        ;;
+    merge)
+        ERL_LIBS=$erlbase/lib/catlfish-0.6.0-dev.ez/catlfish-0.6.0-dev
+        ERL_LIBS=$ERL_LIBS:$erlbase/lib/lager-2.1.1.ez/lager-2.1.1
+        export ERL_LIBS
+        $erlbase/merge.sh 60 3600 $database > merge_log/stdout 2> merge_log/stderr
+        ;;
+    *)
+        echo "catlfish: unknown role: $role"
+esac
diff --git a/packaging/docker/catlfish-dev/supervisord.conf b/packaging/docker/catlfish-dev/supervisord.conf
index f3493e5..8eda9b9 100644
--- a/packaging/docker/catlfish-dev/supervisord.conf
+++ b/packaging/docker/catlfish-dev/supervisord.conf
@@ -3,4 +3,4 @@ nodaemon=true
 
 [program:catlfish]
 childlogdir=/var/run/catlfish/supervisord_log
-command=/usr/local/catlfish/bin/run_erl /var/run/catlfish/ /var/run/catlfish/erlang_log/ "exec /usr/local/catlfish/bin/erl -config catlfish"
+command=/usr/local/catlfish/start.sh