Add support for extensions loading and creation.

10/root/usr/bin/run-postgresql

@@ -47,6 +47,7 @@ if $PG_INITIALIZED ; then
     create_users
 fi
 
+create_extensions
 process_extending_files \
     "${APP_DATA}/src/postgresql-start" \
     "${CONTAINER_SCRIPTS_PATH}/start"

10/root/usr/share/container-scripts/postgresql/README.md

@@ -74,6 +74,15 @@ Set to an estimate of how much memory is available for disk caching by the opera
 **`POSTGRESQL_LOG_DESTINATION (default: /var/lib/pgsql/data/userdata/log/postgresql-*.log)`**  
  Where to log errors, the default is `/var/lib/pgsql/data/userdata/log/postgresql-*.log` and this file is rotated; it can be changed to `/dev/stderr` to make debugging easier
 
+The following environment variables deal with extensions. They are all optional, and if not set, no extensions will be enabled.
+
+**`POSTGRESQL_LIBRARIES`**
+       A comma-separated list of libraries that Postgres will preload using shared_preload_libraries.
+
+**`POSTGRESQL_EXTENSIONS`**
+       A space-separated list of extensions to create when the server start. Once created, the extensions will stay even if the variable is cleared.
+
+
 You can also set the following mount points by passing the `-v /host/dir:/container/dir:Z` flag to Docker.
 
 **`/var/lib/pgsql/data`**  

10/root/usr/share/container-scripts/postgresql/common.sh

@@ -144,6 +144,13 @@ function should_hack_data_sync_retry() {
   return 1
 }
 
+function generate_postgresql_libraries_config() {
+  if [ -v POSTGRESQL_LIBRARIES ]; then
+    echo "shared_preload_libraries='${POSTGRESQL_LIBRARIES}'" >> "${POSTGRESQL_CONFIG_FILE}"
+  fi
+}
+
+
 # New config is generated every time a container is created. It only contains
 # additional custom settings and is included from $PGDATA/postgresql.conf.
 function generate_postgresql_config() {
@@ -171,6 +178,7 @@ function generate_postgresql_config() {
     echo "log_filename = '$(basename "${POSTGRESQL_LOG_DESTINATION}")'" >>"${POSTGRESQL_CONFIG_FILE}"
   fi
 
+  generate_postgresql_libraries_config
   (
   shopt -s nullglob
   for conf in "${APP_DATA}"/src/postgresql-cfg/*.conf; do
@@ -516,3 +524,12 @@ process_extending_files()
     done
   done <<<"$(get_matched_files '*.sh' "$@" | sort -u)"
 }
+
+create_extensions()
+{
+  if [ -v POSTGRESQL_EXTENSIONS ]; then
+    for EXT in $POSTGRESQL_EXTENSIONS; do
+      psql -c "CREATE EXTENSION IF NOT EXISTS ${EXT};"
+    done
+  fi
+}

12/root/usr/bin/run-postgresql

@@ -47,6 +47,7 @@ if $PG_INITIALIZED ; then
     create_users
 fi
 
+create_extensions
 process_extending_files \
     "${APP_DATA}/src/postgresql-start" \
     "${CONTAINER_SCRIPTS_PATH}/start"

12/root/usr/share/container-scripts/postgresql/README.md

@@ -74,6 +74,15 @@ Set to an estimate of how much memory is available for disk caching by the opera
 **`POSTGRESQL_LOG_DESTINATION (default: /var/lib/pgsql/data/userdata/log/postgresql-*.log)`**  
  Where to log errors, the default is `/var/lib/pgsql/data/userdata/log/postgresql-*.log` and this file is rotated; it can be changed to `/dev/stderr` to make debugging easier
 
+The following environment variables deal with extensions. They are all optional, and if not set, no extensions will be enabled.
+
+**`POSTGRESQL_LIBRARIES`**
+       A comma-separated list of libraries that Postgres will preload using shared_preload_libraries.
+
+**`POSTGRESQL_EXTENSIONS`**
+       A space-separated list of extensions to create when the server start. Once created, the extensions will stay even if the variable is cleared.
+
+
 You can also set the following mount points by passing the `-v /host/dir:/container/dir:Z` flag to Docker.
 
 **`/var/lib/pgsql/data`**  

12/root/usr/share/container-scripts/postgresql/common.sh

@@ -144,6 +144,13 @@ function should_hack_data_sync_retry() {
   return 1
 }
 
+function generate_postgresql_libraries_config() {
+  if [ -v POSTGRESQL_LIBRARIES ]; then
+    echo "shared_preload_libraries='${POSTGRESQL_LIBRARIES}'" >> "${POSTGRESQL_CONFIG_FILE}"
+  fi
+}
+
+
 # New config is generated every time a container is created. It only contains
 # additional custom settings and is included from $PGDATA/postgresql.conf.
 function generate_postgresql_config() {
@@ -171,6 +178,7 @@ function generate_postgresql_config() {
     echo "log_filename = '$(basename "${POSTGRESQL_LOG_DESTINATION}")'" >>"${POSTGRESQL_CONFIG_FILE}"
   fi
 
+  generate_postgresql_libraries_config
   (
   shopt -s nullglob
   for conf in "${APP_DATA}"/src/postgresql-cfg/*.conf; do
@@ -516,3 +524,12 @@ process_extending_files()
     done
   done <<<"$(get_matched_files '*.sh' "$@" | sort -u)"
 }
+
+create_extensions()
+{
+  if [ -v POSTGRESQL_EXTENSIONS ]; then
+    for EXT in $POSTGRESQL_EXTENSIONS; do
+      psql -c "CREATE EXTENSION IF NOT EXISTS ${EXT};"
+    done
+  fi
+}

13/root/usr/bin/run-postgresql

@@ -47,6 +47,7 @@ if $PG_INITIALIZED ; then
     create_users
 fi
 
+create_extensions
 process_extending_files \
     "${APP_DATA}/src/postgresql-start" \
     "${CONTAINER_SCRIPTS_PATH}/start"

13/root/usr/share/container-scripts/postgresql/README.md

@@ -74,6 +74,15 @@ Set to an estimate of how much memory is available for disk caching by the opera
 **`POSTGRESQL_LOG_DESTINATION (default: /var/lib/pgsql/data/userdata/log/postgresql-*.log)`**  
  Where to log errors, the default is `/var/lib/pgsql/data/userdata/log/postgresql-*.log` and this file is rotated; it can be changed to `/dev/stderr` to make debugging easier
 
+The following environment variables deal with extensions. They are all optional, and if not set, no extensions will be enabled.
+
+**`POSTGRESQL_LIBRARIES`**
+       A comma-separated list of libraries that Postgres will preload using shared_preload_libraries.
+
+**`POSTGRESQL_EXTENSIONS`**
+       A space-separated list of extensions to create when the server start. Once created, the extensions will stay even if the variable is cleared.
+
+
 You can also set the following mount points by passing the `-v /host/dir:/container/dir:Z` flag to Docker.
 
 **`/var/lib/pgsql/data`**  

13/root/usr/share/container-scripts/postgresql/common.sh

@@ -144,6 +144,13 @@ function should_hack_data_sync_retry() {
   return 1
 }
 
+function generate_postgresql_libraries_config() {
+  if [ -v POSTGRESQL_LIBRARIES ]; then
+    echo "shared_preload_libraries='${POSTGRESQL_LIBRARIES}'" >> "${POSTGRESQL_CONFIG_FILE}"
+  fi
+}
+
+
 # New config is generated every time a container is created. It only contains
 # additional custom settings and is included from $PGDATA/postgresql.conf.
 function generate_postgresql_config() {
@@ -171,6 +178,7 @@ function generate_postgresql_config() {
     echo "log_filename = '$(basename "${POSTGRESQL_LOG_DESTINATION}")'" >>"${POSTGRESQL_CONFIG_FILE}"
   fi
 
+  generate_postgresql_libraries_config
   (
   shopt -s nullglob
   for conf in "${APP_DATA}"/src/postgresql-cfg/*.conf; do
@@ -516,3 +524,12 @@ process_extending_files()
     done
   done <<<"$(get_matched_files '*.sh' "$@" | sort -u)"
 }
+
+create_extensions()
+{
+  if [ -v POSTGRESQL_EXTENSIONS ]; then
+    for EXT in $POSTGRESQL_EXTENSIONS; do
+      psql -c "CREATE EXTENSION IF NOT EXISTS ${EXT};"
+    done
+  fi
+}

14/root/usr/bin/run-postgresql

@@ -47,6 +47,7 @@ if $PG_INITIALIZED ; then
     create_users
 fi
 
+create_extensions
 process_extending_files \
     "${APP_DATA}/src/postgresql-start" \
     "${CONTAINER_SCRIPTS_PATH}/start"

14/root/usr/share/container-scripts/postgresql/README.md

@@ -74,6 +74,15 @@ Set to an estimate of how much memory is available for disk caching by the opera
 **`POSTGRESQL_LOG_DESTINATION (default: /var/lib/pgsql/data/userdata/log/postgresql-*.log)`**  
  Where to log errors, the default is `/var/lib/pgsql/data/userdata/log/postgresql-*.log` and this file is rotated; it can be changed to `/dev/stderr` to make debugging easier
 
+The following environment variables deal with extensions. They are all optional, and if not set, no extensions will be enabled.
+
+**`POSTGRESQL_LIBRARIES`**
+       A comma-separated list of libraries that Postgres will preload using shared_preload_libraries.
+
+**`POSTGRESQL_EXTENSIONS`**
+       A space-separated list of extensions to create when the server start. Once created, the extensions will stay even if the variable is cleared.
+
+
 You can also set the following mount points by passing the `-v /host/dir:/container/dir:Z` flag to Docker.
 
 **`/var/lib/pgsql/data`**  

14/root/usr/share/container-scripts/postgresql/common.sh

@@ -144,6 +144,13 @@ function should_hack_data_sync_retry() {
   return 1
 }
 
+function generate_postgresql_libraries_config() {
+  if [ -v POSTGRESQL_LIBRARIES ]; then
+    echo "shared_preload_libraries='${POSTGRESQL_LIBRARIES}'" >> "${POSTGRESQL_CONFIG_FILE}"
+  fi
+}
+
+
 # New config is generated every time a container is created. It only contains
 # additional custom settings and is included from $PGDATA/postgresql.conf.
 function generate_postgresql_config() {
@@ -171,6 +178,7 @@ function generate_postgresql_config() {
     echo "log_filename = '$(basename "${POSTGRESQL_LOG_DESTINATION}")'" >>"${POSTGRESQL_CONFIG_FILE}"
   fi
 
+  generate_postgresql_libraries_config
   (
   shopt -s nullglob
   for conf in "${APP_DATA}"/src/postgresql-cfg/*.conf; do
@@ -516,3 +524,12 @@ process_extending_files()
     done
   done <<<"$(get_matched_files '*.sh' "$@" | sort -u)"
 }
+
+create_extensions()
+{
+  if [ -v POSTGRESQL_EXTENSIONS ]; then
+    for EXT in $POSTGRESQL_EXTENSIONS; do
+      psql -c "CREATE EXTENSION IF NOT EXISTS ${EXT};"
+    done
+  fi
+}

15/root/usr/bin/run-postgresql

@@ -47,6 +47,7 @@ if $PG_INITIALIZED ; then
     create_users
 fi
 
+create_extensions
 process_extending_files \
     "${APP_DATA}/src/postgresql-start" \
     "${CONTAINER_SCRIPTS_PATH}/start"

15/root/usr/share/container-scripts/postgresql/README.md

@@ -74,6 +74,15 @@ Set to an estimate of how much memory is available for disk caching by the opera
 **`POSTGRESQL_LOG_DESTINATION (default: /var/lib/pgsql/data/userdata/log/postgresql-*.log)`**  
  Where to log errors, the default is `/var/lib/pgsql/data/userdata/log/postgresql-*.log` and this file is rotated; it can be changed to `/dev/stderr` to make debugging easier
 
+The following environment variables deal with extensions. They are all optional, and if not set, no extensions will be enabled.
+
+**`POSTGRESQL_LIBRARIES`**
+       A comma-separated list of libraries that Postgres will preload using shared_preload_libraries.
+
+**`POSTGRESQL_EXTENSIONS`**
+       A space-separated list of extensions to create when the server start. Once created, the extensions will stay even if the variable is cleared.
+
+
 You can also set the following mount points by passing the `-v /host/dir:/container/dir:Z` flag to Docker.
 
 **`/var/lib/pgsql/data`**  

15/root/usr/share/container-scripts/postgresql/common.sh

@@ -144,6 +144,13 @@ function should_hack_data_sync_retry() {
   return 1
 }
 
+function generate_postgresql_libraries_config() {
+  if [ -v POSTGRESQL_LIBRARIES ]; then
+    echo "shared_preload_libraries='${POSTGRESQL_LIBRARIES}'" >> "${POSTGRESQL_CONFIG_FILE}"
+  fi
+}
+
+
 # New config is generated every time a container is created. It only contains
 # additional custom settings and is included from $PGDATA/postgresql.conf.
 function generate_postgresql_config() {
@@ -171,6 +178,7 @@ function generate_postgresql_config() {
     echo "log_filename = '$(basename "${POSTGRESQL_LOG_DESTINATION}")'" >>"${POSTGRESQL_CONFIG_FILE}"
   fi
 
+  generate_postgresql_libraries_config
   (
   shopt -s nullglob
   for conf in "${APP_DATA}"/src/postgresql-cfg/*.conf; do
@@ -516,3 +524,12 @@ process_extending_files()
     done
   done <<<"$(get_matched_files '*.sh' "$@" | sort -u)"
 }
+
+create_extensions()
+{
+  if [ -v POSTGRESQL_EXTENSIONS ]; then
+    for EXT in $POSTGRESQL_EXTENSIONS; do
+      psql -c "CREATE EXTENSION IF NOT EXISTS ${EXT};"
+    done
+  fi
+}

16/root/usr/bin/run-postgresql

@@ -47,6 +47,7 @@ if $PG_INITIALIZED ; then
     create_users
 fi
 
+create_extensions
 process_extending_files \
     "${APP_DATA}/src/postgresql-start" \
     "${CONTAINER_SCRIPTS_PATH}/start"

16/root/usr/share/container-scripts/postgresql/README.md

@@ -74,6 +74,15 @@ Set to an estimate of how much memory is available for disk caching by the opera
 **`POSTGRESQL_LOG_DESTINATION (default: /var/lib/pgsql/data/userdata/log/postgresql-*.log)`**  
  Where to log errors, the default is `/var/lib/pgsql/data/userdata/log/postgresql-*.log` and this file is rotated; it can be changed to `/dev/stderr` to make debugging easier
 
+The following environment variables deal with extensions. They are all optional, and if not set, no extensions will be enabled.
+
+**`POSTGRESQL_LIBRARIES`**
+       A comma-separated list of libraries that Postgres will preload using shared_preload_libraries.
+
+**`POSTGRESQL_EXTENSIONS`**
+       A space-separated list of extensions to create when the server start. Once created, the extensions will stay even if the variable is cleared.
+
+
 You can also set the following mount points by passing the `-v /host/dir:/container/dir:Z` flag to Docker.
 
 **`/var/lib/pgsql/data`**  

16/root/usr/share/container-scripts/postgresql/common.sh

@@ -144,6 +144,13 @@ function should_hack_data_sync_retry() {
   return 1
 }
 
+function generate_postgresql_libraries_config() {
+  if [ -v POSTGRESQL_LIBRARIES ]; then
+    echo "shared_preload_libraries='${POSTGRESQL_LIBRARIES}'" >> "${POSTGRESQL_CONFIG_FILE}"
+  fi
+}
+
+
 # New config is generated every time a container is created. It only contains
 # additional custom settings and is included from $PGDATA/postgresql.conf.
 function generate_postgresql_config() {
@@ -171,6 +178,7 @@ function generate_postgresql_config() {
     echo "log_filename = '$(basename "${POSTGRESQL_LOG_DESTINATION}")'" >>"${POSTGRESQL_CONFIG_FILE}"
   fi
 
+  generate_postgresql_libraries_config
   (
   shopt -s nullglob
   for conf in "${APP_DATA}"/src/postgresql-cfg/*.conf; do
@@ -516,3 +524,12 @@ process_extending_files()
     done
   done <<<"$(get_matched_files '*.sh' "$@" | sort -u)"
 }
+
+create_extensions()
+{
+  if [ -v POSTGRESQL_EXTENSIONS ]; then
+    for EXT in $POSTGRESQL_EXTENSIONS; do
+      psql -c "CREATE EXTENSION IF NOT EXISTS ${EXT};"
+    done
+  fi
+}

src/root/usr/bin/run-postgresql

@@ -47,6 +47,7 @@ if $PG_INITIALIZED ; then
     create_users
 fi
 
+create_extensions
 process_extending_files \
     "${APP_DATA}/src/postgresql-start" \
     "${CONTAINER_SCRIPTS_PATH}/start"

src/root/usr/share/container-scripts/postgresql/README.md

@@ -74,6 +74,15 @@ Set to an estimate of how much memory is available for disk caching by the opera
 **`POSTGRESQL_LOG_DESTINATION (default: /var/lib/pgsql/data/userdata/log/postgresql-*.log)`**  
  Where to log errors, the default is `/var/lib/pgsql/data/userdata/log/postgresql-*.log` and this file is rotated; it can be changed to `/dev/stderr` to make debugging easier
 
+The following environment variables deal with extensions. They are all optional, and if not set, no extensions will be enabled.
+
+**`POSTGRESQL_LIBRARIES`**
+       A comma-separated list of libraries that Postgres will preload using shared_preload_libraries.
+
+**`POSTGRESQL_EXTENSIONS`**
+       A space-separated list of extensions to create when the server start. Once created, the extensions will stay even if the variable is cleared.
+
+
 You can also set the following mount points by passing the `-v /host/dir:/container/dir:Z` flag to Docker.
 
 **`/var/lib/pgsql/data`**