influxdb 是官方提供的fdw，对于influxdb 的访问是通过cgo 直接到处golang 的调用为c 调用（实际上也有一个直接使用golang 编写pg 扩展的项目plgo）
一些说明
对于pgspider 的构建是通过一个base 镜像构建的，但是以为依赖golang 所以提供了一个额外的golang base 镜像，同时在
测试的时候发现base 镜像的基础镜像对于golang 的cgo 支持有问题（debian:stretch-slim）所以使用了debian:buster，golang
版本使用13.3
- Dockerfile-base-go
FROM debian:buster
RUN apt-get update && apt-get install -y build-essential git wget libreadline-dev zlib1g-dev
WORKDIR /app
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
RUN set -eux;
apt-get update;
apt-get install -y --no-install-recommends libnss-wrapper;
rm -rf /var/lib/apt/lists/*
RUN wget https://ftp.postgresql.org/pub/source/v11.6/postgresql-11.6.tar.gz
RUN wget https://raw.githubusercontent.com/pgspider/pgspider/master/pgspider.patch
RUN tar xvf postgresql-11.6.tar.gz
RUN patch -p1 -d postgresql-11.6 < /app/pgspider.patch
RUN cd postgresql-11.6
&& ./configure
&& make && make install
&& cd /app/postgresql-11.6/contrib/pgspider_core_fdw
&& make && make install
&& cd /app/postgresql-11.6/contrib/pgspider_fdw
&& make && make install
&& cd /app/postgresql-11.6/contrib
&& make && make install
ENV PATH $PATH:/usr/local/pgspider/bin
influx pg 扩展构建
- dockerfile
FROM dalongrong/pgspider:base-go as build
WORKDIR /app
RUN wget https://dl.google.com/go/go1.13.3.linux-amd64.tar.gz && tar zxvf go1.13.3.linux-amd64.tar.gz
ENV PATH $PATH:/app/go/bin
ENV GOPATH /opt/go
RUN go get github.com/influxdata/influxdb1-client/v2
RUN git clone https://github.com/pgspider/influxdb_fdw.git /app/postgresql-11.6/contrib/influxdb_fdw
RUN cd /app/postgresql-11.6/contrib/influxdb_fdw && make USE_PGXS=1 with_llvm=no && make install USE_PGXS=1 with_llvm=no
FROM debian:stretch-slim
ENV GOSU_VERSION 1.11
RUN apt-get update && apt-get install -y wget
# explicitly set user/group IDs
RUN set -eux;
groupadd -r postgres --gid=999;
# https://salsa.debian.org/postgresql/postgresql-common/blob/997d842ee744687d99a2b2d95c1083a2615c79e8/debian/postgresql-common.postinst#L32-35
useradd -r -g postgres --uid=999 --home-dir=/var/lib/postgresql --shell=/bin/bash postgres;
# also create the postgres user's home directory with appropriate permissions
# see https://github.com/docker-library/postgres/issues/274
mkdir -p /var/lib/postgresql;
chown -R postgres:postgres /var/lib/postgresql
RUN wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$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"]
使用
依赖的influxdb 使用docker-compose 运行
- docker-compose 文件
version: "3"
services:
pgspider-influxdb:
image: dalongrong/pgspider:influxdb
ports:
- "5432:5432"
influxdb:
image: influxdb
environment:
- "INFLUXDB_ADMIN_USER=dalong"
- "INFLUXDB_ADMIN_PASSWORD=dalong"
- "INFLUXDB_USER=demo"
- "INFLUXDB_USER_PASSWORD=demo"
- "INFLUXDB_DB=mydb"
ports:
- "8086:8086"
chronograf:
image: chronograf
ports:
- "8888:8888"
command: --influxdb-url=http://influxdb:8086
- 启动
docker-compose up -d
- 使用chronograf添加测试数据
- 使用扩展
// 启动扩展
CREATE EXTENSION influxdb_fdw;
// 创建server
CREATE SERVER influxdb_server FOREIGN DATA WRAPPER influxdb_fdw OPTIONS
(dbname 'mydb', host 'http://influxdb', port '8086') ;
// 创建用户映射
CREATE USER MAPPING FOR CURRENT_USER SERVER influxdb_server OPTIONS(user 'dalong', password 'dalong');
// 创建外部表 方法一 直接定义
CREATE FOREIGN TABLE t1(time timestamp with time zone , age int,name text, email text,user_id int) SERVER influxdb_server OPTIONS (table 'demouser');
// 查询数据
SELECT * FROM t1;
//
创建外部表 方法二 使用schem 导入
IMPORT FOREIGN SCHEMA public FROM SERVER influxdb_server INTO public;
// 查询数据
select * from demouser;
- 效果
参考资料
https://www.cnblogs.com/rongfengliang/p/10672695.html
https://github.com/pgspider/influxdb_fdw
https://github.com/pgspider/pgspider
https://github.com/rongfengliang/pgspider-docker
https://hub.docker.com/repository/docker/dalongrong/pgspider
https://github.com/influxdata/influxdb
https://github.com/influxdata/chronograf