AstCLI

Crystal version of Asterisk PBX astcli utility.

Why?

I am working on cloud project, that works in docker swarm; Asterisk PBX running in host networking mode; AMI and ARI clients connected with asterisk through docker0 interface.

However, in order to get main application started, some initial operations and validations should be made (with Asterisk), either before app get started, in docker-entrypoint script... So it is why I've created this tool.

Usage

Use it same way as original astcli utility:

./astcli -u ${ASTERISK_AMI_USERNAME} \
         -s ${ASTERISK_AMI_PASSWORD} \
         -h ${ASTERISK_HOST:-$(ip route | grep default | head -n 1 | cut -d' ' -f3)} \
         -p ${ASTERISK_AMI_PORT} \
         dialplan show globals

Additionally, it is possible to execute any AMI action, not only AMI action 'command', as with original astcli. To do so, just pass JSON string as argument:

./astcli -u ${ASTERISK_AMI_USERNAME} \
         -s ${ASTERISK_AMI_PASSWORD} \
         -h ${ASTERISK_HOST:-$(ip route | grep default | head -n 1 | cut -d' ' -f3)} \
         -p ${ASTERISK_AMI_PORT} \
         "{\"Action\": \"SIPpeers\"}"

Examples

Asterisk CLI command:

crystal src/astcli.cr -- -u astcli -s astcli "dialplan show globals" | grep "CONSOLE="
# => CONSOLE=Console/dsp

Asterisk AMI action:

crystal src/astcli.cr -- -u astcli -s astcli '{"Action": "GetConfig", "filename": "extensions.conf"}'
# =>
# {
#   "response": "Success",
#   "actionid": "GetConfig-5cac06e9-51cb-4c20-bdce-9bd641e72dc1",
#   "category-000000": "general",
#   "line-000000-000000": "static=yes",
#   "line-000000-000001": "writeprotect=no",
#   "line-000000-000002": "clearglobalvars=no",
#   "category-000001": "globals",
#   "line-000001-000000": "CONSOLE=Console/dsp",
#   ...

crystal src/astcli.cr -- -u astcli -s astcli '{"Action": "GetConfig", "filename": "extensions.conf"}' | \
jq -r '."line-000001-000000"'
# => CONSOLE=Console/dsp

Installation

Just compile it and start with command-line: ./astcli --help.

Docker

If you want just to use astcli within docker-container, simply use multi-stage build. Example:

FROM andrius/crystal-lang as astcli

WORKDIR /src
RUN git clone https://github.com/ctiapps/astcli.git . \
 && git checkout tags/v0.1.0
RUN shards build --production --release --no-debug --progress --warnings=all
# create list of deps to copy or astcli won't work with Alpine linux
RUN ldd ./bin/astcli | tr -s '[:blank:]' '\n' | grep '^/' | \
    xargs -I % sh -c 'mkdir -p $(dirname deps%); cp % deps%;'
RUN find ./deps/

#########################################################

FROM andrius/alpine-ruby:latest

# Copyng dependences. Could be skipped with Debian or Ubuntu
COPY --from=astcli /src/deps /
# that will fix DNS resolve issue in docker
COPY --from=astcli /lib/x86_64-linux-gnu/libnss_dns.so.* /lib/x86_64-linux-gnu/
COPY --from=astcli /lib/x86_64-linux-gnu/libresolv.so.*  /lib/x86_64-linux-gnu/

# Copy astcli script
COPY --from=astcli /src/bin/astcli /usr/local/bin/astcli

# Everything else...
ENV WORKDIR /app
WORKDIR ${WORKDIR}

ENV TIMEZONE "Europe/Amsterdam"

ENV DOCKER_BUILD_DEPS build-base \
  git \
  libxml2-dev \
  libxslt-dev \
  ...