gzip 也是一个在实际中比较有用的处理工具，可以减少数据传输，以下是集成gzip http 以及plv8 的处理
gzip Docker 镜像
- Dockerfile
FROM dalongrong/pgspider:base as build
WORKDIR /app
RUN apt-get update && apt-get install -y libssl-dev libz-dev pkg-config
RUN git clone https://github.com/pramsey/pgsql-gzip.git /app/postgresql-11.6/contrib/pgsql-gzip
RUN cd /app/postgresql-11.6/contrib/pgsql-gzip && make && make install
FROM debian:stretch-slim
ENV GOSU_VERSION 1.11
RUN apt-get update && apt-get install -y wget libssl-dev libz-dev libreadline-dev
# explicitly set user/group IDs
RUN set -eux; \
groupadd -r postgres --gid=999; \
# https://salsa.debian.org/postgresql/postgresql-common/blob/997d842ee744687d99a2b2d95c1083a2615c79e8/debian/postgresql-common.postinst#L32-35
useradd -r -g postgres --uid=999 --home-dir=/var/lib/postgresql --shell=/bin/bash postgres; \
# also create the postgres user's home directory with appropriate permissions
# see https://github.com/docker-library/postgres/issues/274
mkdir -p /var/lib/postgresql; \
chown -R postgres:postgres /var/lib/postgresql
RUN wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
&& chmod +x /usr/local/bin/gosu \
&& gosu nobody true
# make the "en_US.UTF-8" locale so postgres will be utf-8 enabled by default
RUN set -eux; \
if [ -f /etc/dpkg/dpkg.cfg.d/docker ]; then \
# if this file exists, we're likely in "debian:xxx-slim", and locales are thus being excluded so we need to remove that exclusion (since we need locales)
grep -q '/usr/share/locale' /etc/dpkg/dpkg.cfg.d/docker; \
sed -ri '/\/usr\/share\/locale/d' /etc/dpkg/dpkg.cfg.d/docker; \
! grep -q '/usr/share/locale' /etc/dpkg/dpkg.cfg.d/docker; \
fi; \
apt-get update; apt-get install -y locales; rm -rf /var/lib/apt/lists/*; \
localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
ENV LANG en_US.utf8
# install "nss_wrapper" in case we need to fake "/etc/passwd" and "/etc/group" (especially for OpenShift)
# https://github.com/docker-library/postgres/issues/359
# https://cwrap.org/nss_wrapper.html
RUN set -eux; \
apt-get update; \
apt-get install -y --no-install-recommends libnss-wrapper; \
rm -rf /var/lib/apt/lists/*
RUN mkdir /docker-entrypoint-initdb.d
COPY --from=build /usr/local/pgspider /usr/local/pgspider
RUN sed -ri "s!^#?(listen_addresses)\s*=\s*\S+.*!\1 = '*'!" /usr/local/pgspider/share/postgresql/postgresql.conf.sample; \
grep -F "listen_addresses = '*'" /usr/local/pgspider/share/postgresql/postgresql.conf.sample
RUN mkdir -p /var/run/postgresql && chown -R postgres:postgres /var/run/postgresql && chmod 2777 /var/run/postgresql
ENV PATH $PATH:/usr/local/pgspider/bin
ENV PGDATA /var/lib/postgresql/data
RUN mkdir -p "$PGDATA" && chown -R postgres:postgres "$PGDATA" && chmod 777 "$PGDATA"
VOLUME /var/lib/postgresql/data
COPY docker-entrypoint.sh /usr/local/bin/
RUN ln -s usr/local/bin/docker-entrypoint.sh / # backwards compat
ENTRYPOINT ["docker-entrypoint.sh"]
EXPOSE 5432
CMD ["postgres"]
- 集成http 的docker 镜像
FROM dalongrong/pgspider:base as build
WORKDIR /app
RUN apt-get update && apt-get install -y libssl-dev libz-dev pkg-config libcurl4-openssl-dev
RUN git clone https://github.com/pramsey/pgsql-gzip.git /app/postgresql-11.6/contrib/pgsql-gzip
RUN git clone https://github.com/pramsey/pgsql-http.git /app/postgresql-11.6/contrib/pgsql-http
RUN cd /app/postgresql-11.6/contrib/pgsql-gzip && make && make install
RUN cd /app/postgresql-11.6/contrib/pgsql-http && make && make install
FROM debian:stretch-slim
ENV GOSU_VERSION 1.11
RUN apt-get update && apt-get install -y wget libssl-dev libcurl4-openssl-dev libz-dev libreadline-dev
# explicitly set user/group IDs
RUN set -eux; \
groupadd -r postgres --gid=999; \
# https://salsa.debian.org/postgresql/postgresql-common/blob/997d842ee744687d99a2b2d95c1083a2615c79e8/debian/postgresql-common.postinst#L32-35
useradd -r -g postgres --uid=999 --home-dir=/var/lib/postgresql --shell=/bin/bash postgres; \
# also create the postgres user's home directory with appropriate permissions
# see https://github.com/docker-library/postgres/issues/274
mkdir -p /var/lib/postgresql; \
chown -R postgres:postgres /var/lib/postgresql
RUN wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
&& chmod +x /usr/local/bin/gosu \
&& gosu nobody true
# make the "en_US.UTF-8" locale so postgres will be utf-8 enabled by default
RUN set -eux; \
if [ -f /etc/dpkg/dpkg.cfg.d/docker ]; then \
# if this file exists, we're likely in "debian:xxx-slim", and locales are thus being excluded so we need to remove that exclusion (since we need locales)
grep -q '/usr/share/locale' /etc/dpkg/dpkg.cfg.d/docker; \
sed -ri '/\/usr\/share\/locale/d' /etc/dpkg/dpkg.cfg.d/docker; \
! grep -q '/usr/share/locale' /etc/dpkg/dpkg.cfg.d/docker; \
fi; \
apt-get update; apt-get install -y locales; rm -rf /var/lib/apt/lists/*; \
localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
ENV LANG en_US.utf8
# install "nss_wrapper" in case we need to fake "/etc/passwd" and "/etc/group" (especially for OpenShift)
# https://github.com/docker-library/postgres/issues/359
# https://cwrap.org/nss_wrapper.html
RUN set -eux; \
apt-get update; \
apt-get install -y --no-install-recommends libnss-wrapper; \
rm -rf /var/lib/apt/lists/*
RUN mkdir /docker-entrypoint-initdb.d
COPY --from=build /usr/local/pgspider /usr/local/pgspider
RUN sed -ri "s!^#?(listen_addresses)\s*=\s*\S+.*!\1 = '*'!" /usr/local/pgspider/share/postgresql/postgresql.conf.sample; \
grep -F "listen_addresses = '*'" /usr/local/pgspider/share/postgresql/postgresql.conf.sample
RUN mkdir -p /var/run/postgresql && chown -R postgres:postgres /var/run/postgresql && chmod 2777 /var/run/postgresql
ENV PATH $PATH:/usr/local/pgspider/bin
ENV PGDATA /var/lib/postgresql/data
RUN mkdir -p "$PGDATA" && chown -R postgres:postgres "$PGDATA" && chmod 777 "$PGDATA"
VOLUME /var/lib/postgresql/data
COPY docker-entrypoint.sh /usr/local/bin/
RUN ln -s usr/local/bin/docker-entrypoint.sh / # backwards compat
ENTRYPOINT ["docker-entrypoint.sh"]
EXPOSE 5432
CMD ["postgres"]
- 集成plv8 的镜像
基于已有的基础镜像添加plv8 支持，因为构建方式使用了静态连接库
FROM dalongrong/pgspider:gzip-http
RUN apt-get update && apt-get install -y libc++1
COPY --from=dalongrong/pgspider:plv8 /usr/local/pgspider/lib/postgresql/plv8-2.3.12.so /usr/local/pgspider/lib/postgresql/plv8-2.3.12.so
COPY --from=dalongrong/pgspider:plv8 /usr/local/pgspider/share/postgresql/extension /usr/local/pgspider/share/postgresql/extension
集成使用
- docker-compose 文件
version: "3"
services:
graphql-engine:
image: hasura/graphql-engine:v1.1.0
ports:
- "8080:8080"
environment:
HASURA_GRAPHQL_DATABASE_URL: postgres://postgres:dalong@pgspider-fdw:5432/postgres
HASURA_GRAPHQL_ENABLE_CONSOLE: "true" # set to "false" to disable console
HASURA_GRAPHQL_ENABLED_LOG_TYPES: startup, http-log, webhook-log, websocket-log, query-log
pgspider-fdw:
image: dalongrong/pgspider:gzip-http-plv8
ports:
- "5432:5432"
environment:
- "POSTGRES_PASSWORD=dalong"
- 启动
docker-compose up -d
- 使用扩展
// create extension
create extension plv8;
create extension http;
create extension gzip;
// create fucntion
CREATE OR REPLACE FUNCTION plv8_eval_test()
RETURNS text AS $$
var result = eval("1+2")
return JSON.stringify(result);
$$ LANGUAGE plv8 IMMUTABLE STRICT;
// select
create table appdemos as
select encode(gzip(content),'hex') as gzip ,plv8_eval_test() FROM http_get('http://httpbin.org/ip');
- hasura 集成
说明
以上是几个扩展的集成，我们可以灵活的扩展pg 对于数据的支持能力
参考资料
https://github.com/rongfengliang/pgspider-docker
https://github.com/hasura/graphql-engine/releases
https://github.com/pramsey/pgsql-gzip
https://github.com/pramsey/pgsql-http
https://hub.docker.com/repository/docker/dalongrong/pgspider