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rqlite/docker-entrypoint.sh
2025-04-03 13:25:26 -04:00

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#!/bin/sh
contains() {
key=$1
shift
for a in "$@"; do
case "$a" in
"$key"*) return 1 ;;
esac
done
return 0
}
DEFAULT_NODE_ID=$(hostname)
DEFAULT_ADV_ADDRESS=$(hostname -f)
CMD=$1
ARGS="$@"
contains "-http-addr" $ARGS
if [ $? -eq 0 ]; then
HTTP_ADDR="${HTTP_ADDR:-0.0.0.0:4001}"
http_addr="-http-addr $HTTP_ADDR"
fi
contains "-http-adv-addr" $ARGS
if [ $? -eq 0 ]; then
HTTP_ADV_ADDR="${HTTP_ADV_ADDR:-$DEFAULT_ADV_ADDRESS:4001}"
http_adv_addr="-http-adv-addr $HTTP_ADV_ADDR"
fi
contains "-raft-addr" $ARGS
if [ $? -eq 0 ]; then
RAFT_ADDR="${RAFT_ADDR:-0.0.0.0:4002}"
raft_addr="-raft-addr $RAFT_ADDR"
fi
contains "-raft-adv-addr" $ARGS
if [ $? -eq 0 ]; then
RAFT_ADV_ADDR="${RAFT_ADV_ADDR:-$DEFAULT_ADV_ADDRESS:4002}"
raft_adv_addr="-raft-adv-addr $RAFT_ADV_ADDR"
fi
contains "-node-id" $ARGS
if [ $? -eq 0 ]; then
NODE_ID="${NODE_ID:-$DEFAULT_NODE_ID}"
node_id="-node-id $NODE_ID"
fi
extensions_path=""
if [ -n "$SQLITE_EXTENSIONS" ]; then
contains "-extensions-path" $ARGS
if [ $? -eq 1 ]; then
printf "Setting both -extensions-path and SQLITE_EXTENSIONS is not allowed\n"
exit 1
fi
case "$SQLITE_EXTENSIONS" in
*,*)
IFS=","
;;
esac
for ext in $SQLITE_EXTENSIONS; do
path="/opt/extensions/$ext.zip"
if [ ! -e "$path" ]; then
printf "SQLite extension %s does not exist\n" "$ext"
exit 1
fi
if [ -z "$extensions_path" ]; then
extensions_path="$path"
else
extensions_path="${extensions_path},$path"
fi
done
unset IFS
fi
if [ -n "$extensions_path" ]; then
extensions_path_flag="-extensions-path=$extensions_path"
fi
if [ -n "$CUSTOM_SQLITE_EXTENSIONS_PATH" ]; then
contains "-extensions-path" $ARGS
if [ $? -eq 1 ]; then
printf "Setting both -extensions-path and CUSTOM_SQLITE_EXTENSIONS_PATH is not allowed\n"
exit 1
fi
if [ -n "$extensions_path_flag" ]; then
extensions_path_flag="$extensions_path_flag,$CUSTOM_SQLITE_EXTENSIONS_PATH"
else
extensions_path_flag="-extensions-path=$CUSTOM_SQLITE_EXTENSIONS_PATH"
fi
fi
fk_flag=""
if [ -n "$ENABLE_FK" ]; then
fk_flag="-fk"
fi
# When running on Kubernetes, delay a small time so DNS records
# are configured across the cluster when this rqlited comes up. Because
# rqlite does node-discovery using a headless service, it must have
# accurate DNS records. If the Pods addresses are not in the records,
# the DNS lookup will result in an error, and the Kubernetes system will
# cache this failure for (by default) 30 seconds. So this delay
# actually means getting to "ready" is quicker.
#
# This is kind of a hack. If anyone knows a better way file
# a GitHub issue at https://github.com/rqlite/rqlite.
if [ -n "$KUBERNETES_SERVICE_HOST" ] && [ -z "$START_DELAY" ]; then
START_DELAY=5
fi
[ -n "$START_DELAY" ] && sleep "$START_DELAY"
RQLITED=/bin/rqlited
rqlited_commands="$RQLITED $node_id $http_addr $http_adv_addr $raft_addr $raft_adv_addr $extensions_path_flag $fk_flag"
data_dir="${DATA_DIR:-/rqlite/file/data}"
# Check for two specific invocation commands. If neither is found, just run
# the command exactly as passed.
case "$CMD" in
run)
# Default from Dockerfile
set -- $rqlited_commands "$data_dir"
;;
-*)
# User is passing some options, so merge them.
set -- $rqlited_commands "$@" "$data_dir"
;;
esac
exec "$@"