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internal_build.go
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internal_build.go
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package main
import (
"fmt"
"io"
"log"
"os"
"os/exec"
"strings"
"text/template"
)
func buildImage(version, build string) {
output, err := exec.Command("docker", "image", "ls").Output()
if err != nil {
log.Fatalf("could not list docker images: %s", err)
}
tempFile, err := os.CreateTemp("/tmp/", "docker.file.*")
if err != nil {
log.Fatalf("could not create temp file: %s", err)
}
defer os.Remove(tempFile.Name())
if !strings.Contains(string(output), "couchbase/server") || !strings.Contains(string(output), fmt.Sprintf("%s-%s", version, build)) {
writeDockerfile(version, build, tempFile)
cmd := exec.Command("docker", "build", ".", "-f", tempFile.Name(), "-t", fmt.Sprintf("couchbase/server:%s-%s", version, build))
stderr, err := cmd.StderrPipe()
if err != nil {
log.Fatalf("could not build docker image: %s", err)
}
if err := cmd.Start(); err != nil {
log.Fatalf("could not build docker image: %s", err)
}
errMessage, err := io.ReadAll(stderr)
if err != nil {
log.Fatalf("could not build docker image: %s", err)
}
log.Println(string(errMessage))
if err := cmd.Wait(); err != nil {
log.Fatalf("could not build docker image: %s", err)
}
}
}
func writeDockerfile(version, buildNum string, file *os.File) {
vars := struct {
Package string
URL string
}{
Package: fmt.Sprintf("couchbase-server-enterprise_%s-%s-ubuntu20.04_amd64.deb", version, buildNum),
URL: fmt.Sprintf("http://builds.com/%s/%s", version, buildNum),
}
const dockerFile = `
FROM ubuntu:20.04
ENV PATH=$PATH:/opt/couchbase/bin:/opt/couchbase/bin/tools:/opt/couchbase/bin/install
RUN set -x && \
apt-get update && \
apt-get install -yq runit wget chrpath tzdata \
lsof lshw sysstat net-tools numactl bzip2 libtinfo5 && \
apt-get autoremove && apt-get clean && \
rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
RUN if [ ! -x /usr/sbin/runsvdir-start ]; then \
cp -a /etc/runit/2 /usr/sbin/runsvdir-start; \
fi
RUN groupadd -g 1000 couchbase && useradd couchbase -u 1000 -g couchbase -M
RUN set -x && \
export INSTALL_DONT_START_SERVER=1 && \
wget {{.URL}}/{{.Package}} && \
apt install -y ./{{.Package}} && \
rm -f ./{{.Package}} && \
apt-get autoremove && apt-get clean && \
rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
RUN mkdir -p /etc/service/couchbase-server/
RUN printf "#!/bin/sh \n\
exec 2>&1 \n\
cd /opt/couchbase \n\
mkdir -p var/lib/couchbase \n\
var/lib/couchbase/config \n\
var/lib/couchbase/data \n\
var/lib/couchbase/stats \n\
var/lib/couchbase/logs \n\
var/lib/moxi \n\
\n\
chown -R couchbase:couchbase var \n\
if [ \"\$(whoami)\" = \"couchbase\" ]; then \n\
exec /opt/couchbase/bin/couchbase-server -- -kernel global_enable_tracing false -noinput \n\
else \n\
exec chpst -ucouchbase /opt/couchbase/bin/couchbase-server -- -kernel global_enable_tracing false -noinput \n\
fi" > /etc/service/couchbase-server/run
RUN chmod a+x /etc/service/couchbase-server/run
RUN chown -R couchbase:couchbase /etc/service
RUN mkdir -p /etc/runit/runsvdir/default/couchbase-server/supervise \
&& chown -R couchbase:couchbase \
/etc/service \
/etc/runit/runsvdir/default/couchbase-server/supervise
RUN printf "#!/bin/sh \
echo \"Running in Docker container - $0 not available\"" > /usr/local/bin/dummy.sh
RUN chmod a+x /usr/local/bin/dummy.sh
RUN ln -s dummy.sh /usr/local/bin/iptables-save && \
ln -s dummy.sh /usr/local/bin/lvdisplay && \
ln -s dummy.sh /usr/local/bin/vgdisplay && \
ln -s dummy.sh /usr/local/bin/pvdisplay
RUN printf "#!/bin/bash \n\
set -e \n\
\
staticConfigFile=/opt/couchbase/etc/couchbase/static_config \n\
restPortValue=8091 \n\
function overridePort() { \n\
portName=\$1 \n\
portNameUpper=\$(echo \$portName | awk '{print toupper(\$0)}') \n\
portValue=\${!portNameUpper} \n\
if [ \"\$portValue\" != \"\" ]; then \n\
if grep -Fq \"{\${portName},\" \${staticConfigFile} \n\
then \n\
echo \"Don't override port \${portName} because already available in \$staticConfigFile\" \n\
else \
echo \"Override port '\$portName' with value '\$portValue'\" \n\
echo \"{\$portName, \$portValue}.\" >> \${staticConfigFile} \n\
\
if [ \${portName} == \"rest_port\" ]; then \n\
restPortValue=\${portValue} \n\
fi \n\
fi \n\
fi \n\
} \n\
\n\
overridePort \"rest_port\" \n\
overridePort \"mccouch_port\" \n\
overridePort \"memcached_port\" \n\
overridePort \"query_port\" \n\
overridePort \"ssl_query_port\" \n\
overridePort \"fts_http_port\" \n\
overridePort \"moxi_port\" \n\
overridePort \"ssl_rest_port\" \n\
overridePort \"ssl_capi_port\" \n\
overridePort \"ssl_proxy_downstream_port\" \n\
overridePort \"ssl_proxy_upstream_port\" \n\
\n\
[[ \"\$1\" == \"couchbase-server\" ]] && { \n\
\n\
if [ \"\$(whoami)\" = \"couchbase\" ]; then \n\
\n\
if [ ! -w /opt/couchbase/var -o \n\
\$(find /opt/couchbase/var -maxdepth 0 -printf '%%u') != \"couchbase\" ]; then \n\
echo \"/opt/couchbase/var is not owned and writable by UID 1000\" \n\
echo \"Aborting as Couchbase Server will likely not run\" \n\
exit 1 \n\
fi \n\
fi \n\
echo \"Starting Couchbase Server -- Web UI available at http://ip:\$restPortValue\" \n\
echo \"and logs available in /opt/couchbase/var/lib/couchbase/logs\" \n\
exec /usr/sbin/runsvdir-start \n\
} \n\
\n\
exec \"\$@\" "> /entrypoint.sh
RUN chmod a+x /entrypoint.sh
ENTRYPOINT ["/entrypoint.sh"]
CMD ["couchbase-server"]
`
tmpl, err := template.New("internal").Parse(dockerFile)
if err != nil {
log.Fatalf("could not create template: %s", err)
}
err = tmpl.Execute(file, vars)
if err != nil {
log.Fatalf("could not execute template: %s", err)
}
}