如何在高山码头工人上安装有效的Perl Cassandra客户端

Question

哪个是在Alpine docker上运行的最佳Perl Cassandra客户端，我如何安装和使用它？

请提供一个docker文件或至少提供docker命令以及连接到Cassandra的POC脚本。

这是使用DBD :: Cassandra库的最新尝试，docker文件实际上已成功完成并得到部署：

FROM alpine:3.10.3

## alpine curl and wget aren't fully compatible, so we install them
## here. gnupg is needed for Module::Signature.
RUN apk update && apk upgrade
RUN apk add --no-cache curl tar make gcc build-base wget gnupg ca-certificates g++ git gd-dev
RUN apk add --no-cache zlib zlib-dev
RUN apk add --no-cache perl perl-dev

RUN apk add --no-cache perl-app-cpanminus
RUN cpanm App::cpm

WORKDIR /usr

RUN cpm install Try::Tiny
RUN cpm install YAML
RUN cpm install JSON
RUN cpm install JSON::MaybeXS
RUN cpm install HTTP::Request
RUN cpm install HTTP::Response
RUN cpm install HTTP::Daemon

RUN cpm install GD::Simple
RUN cpm install GD::Graph
RUN cpm install Data::HexDump::Range
RUN cpm install Proc::Daemon
RUN cpm install Test::Block
RUN cpm install Text::Colorizer
RUN cpm install Gzip::Faster

ENV PERL5LIB=/usr/local/lib/perl5
ENV PATH=/usr/local/bin:$PATH

RUN apk add --no-cache musl-obstack-dev --repository=http://dl-cdn.alpinelinux.org/alpine/edge/main

RUN cpm install Proc::ProcessTable
RUN cpm install Kafka::Connection

RUN apk add --update openssl && \
    rm -rf /var/cache/apk/*

#RUN cpm install DBI
RUN cpm install DBD::Cassandra

COPY run.sh /run.sh

RUN chmod +x "/run.sh"

RUN mkdir -p /code_path

WORKDIR /code_path

CMD ["/run.sh"]

这里是脚本：

use Data::Dumper;

use DBD::Cassandra;
use DBI;

say("Mama");

my $user = undef;
my $password = undef;

my $host = 'cassandra.cassandra.svc.cluster.local';
my $keyspace = 'grids';
my $table = 'electricity_grid';

my $dbh = DBI->connect("dbi:Cassandra:host=$host;keyspace=$keyspace", $user, $password, { RaiseError => 1 });
my $rows = $dbh->selectall_arrayref("SELECT * FROM $table");

for my $row (@$rows) {
    # Do something with your row
    say($row);
}

但是该代码示例无法像未安装该库那样工作：

bash-5.0# ./demoCassandra.pl 
Can't locate DBD/Cassandra.pm in @INC (you may need to install the 
DBD::Cassandra module) (@INC contains: /usr/local/lib/perl5/5.28.2/x86_64-linux-thread-multi /usr/local/lib/perl5/5.28.2 /usr/local/lib/perl5/x86_64-linux-thread-multi /usr/local/lib/perl5 /usr/local/lib/perl5/site_perl /usr/local/share/perl5/site_perl /usr/lib/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib/perl5/core_perl /usr/share/perl5/core_perl) at ./demoCassandra.pl line 7.
BEGIN failed--compilation aborted at ./demoCassandra.pl line 7.

这是一个古老的尝试：由于下面@valiano的回答的相关性，我在这里将其提升。

我发现的最新库是：DBD :: Cassandra所以我尝试安装perl DBD :: Cassandra在高山码头工人上，这失败了：

cpm install DBD::Cassandra

阅读成功安装的日志后

cpm install IO::Socket::INET6

并且安装失败

cpm install OpenSSL

这是基本文件：

FROM alpine:3.10.3


## alpine curl and wget aren't fully compatible, so we install them
## here. gnupg is needed for Module::Signature.
RUN apk update && apk upgrade
RUN apk add --no-cache curl tar make gcc build-base wget gnupg ca-certificates g++ git gd-dev
RUN apk add --no-cache zlib zlib-dev
RUN apk add --no-cache perl perl-dev

RUN curl -L <this was cencored by stack overflow>cpanm > /bin/cpanm && chmod +x /bin/cpanm
RUN cpanm App::cpm

WORKDIR /usr

RUN cpm install Try::Tiny
RUN cpm install YAML
RUN cpm install JSON
RUN cpm install JSON::MaybeXS
RUN cpm install HTTP::Request
RUN cpm install HTTP::Response
RUN cpm install HTTP::Daemon

RUN cpm install GD::Simple
RUN cpm install GD::Graph
RUN cpm install Data::HexDump::Range
RUN cpm install Proc::Daemon
RUN cpm install Test::Block
RUN cpm install Text::Colorizer
RUN cpm install Gzip::Faster

ENV PERL5LIB=/usr/local/lib/perl5
ENV PATH=/usr/local/bin:$PATH

RUN apk add --no-cache musl-obstack-dev --repository=http://dl-cdn.alpinelinux.org/alpine/edge/testing

RUN cpm install Proc::ProcessTable
RUN cpm install Kafka::Connection

COPY run.sh /run.sh

RUN chmod +x "/run.sh"

RUN mkdir -p /code_path

WORKDIR /code_path

CMD ["/run.sh"]

输出失败文件指示缺少IO :: Socket :: INET6 OpenSSL：

bash-5.0# tail /root/.cpanm/work/1582818617.3526/build.log
/usr/include/openssl/bn.h:332:1: note: declared here
 DEPRECATEDIN_0_9_8(int
 ^~~~~~~~~~~~~~~~~~
OpenSSL.xs: In function 'boot_OpenSSL':
OpenSSL.xs:854:9: warning: implicit declaration of function     'SSL_load_error_strings'; did you mean 'ERR_lib_error_string'? [-Wimplicit-        function-declaration]
     SSL_load_error_strings();
     ^~~~~~~~~~~~~~~~~~~~~~
     ERR_lib_error_string
make: *** [Makefile:353: OpenSSL.o] Error 1
-> FAIL Installing OpenSSL failed. See     /root/.cpanm/work/1582818617.3526/build.log for details. Retry with --force to force install it.

Answer 1

我能够使用以下调整成功构建附加的Dockerfile：

• 对于/bin/cpanm，使用Alpine的本机软件包perl-app-cpanminus：

  RUN apk add --no-cache perl-app-cpanminus

  （而不是手动下载cpanm二进制文件-这是一个特殊的自定义版本吗？]

• [musl-obstack-dev已从edge/testing移至edge/main信息库：

  RUN apk add --no-cache musl-obstack-dev --repository=http://dl-cdn.alpinelinux.org/alpine/edge/main