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Merge pull request #32 from davide-scola/0.x-add_grenache_request
[0.x] Request
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| Original file line number | Diff line number | Diff line change |
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@@ -37,6 +37,7 @@ grenache-get | |
| grenache-put | ||
| grenache-keygen | ||
| grenache-lookup | ||
| grenache-request | ||
| grenache-announce | ||
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| # | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,225 @@ | ||
| #!/bin/bash | ||
| ############################################################################ | ||
| # This file is part of Grenache Command Line Interface. # | ||
| # # | ||
| # Copyright (C) 2017-2025 Davide Scola <davide@bitfinex.com> # | ||
| # # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); you may # | ||
| # not use this file except in compliance with the License. You may obtain # | ||
| # a copy of the License at # | ||
| # # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 # | ||
| # # | ||
| # Unless required by applicable law or agreed to in writing, software # | ||
| # distributed under the License is distributed on an "AS IS" BASIS, # | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or # | ||
| # implied. See the License for the specific language governing permissions # | ||
| # and limitations under the License. # | ||
| ############################################################################ | ||
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| readonly ME="${BASH_SOURCE[0]}" | ||
| readonly WHOAMI="$(@READLINK@ -snf "${ME}")" | ||
| readonly ARGV=$(@GETOPT@ -o 'a:cg:hn:p:q:rs:tVw:' --long 'arg:,color,grape:,help,numeric:,port:,query:,raw,string:,tls,version,worker:' -n "${ME##*/}" -- "$@") || exit 1 | ||
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| TLS='' | ||
| COLOR='' | ||
| EXIT_CODE=1 | ||
| REQUEST_ARGC=0 | ||
| RESPONSE_ARGV=() | ||
| REQUEST_WORKER='' | ||
| REQUEST_QUERY='.' | ||
| RESPONSE_QUERY='.' | ||
| REQUEST_ARGUMENTS='[]' | ||
| LOOKUP_ARGV=(--random) | ||
| REQUEST_ARGV=(--compact-output --monochrome-output) | ||
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| # Show program's help. | ||
| function show_help { | ||
| @CAT@ <<_EOF | ||
| ${ME##*/} sends a request to a service in the DHT | ||
| Usage: ${ME##*/} [OPTION]... SERVICE ACTION | ||
| Options: | ||
| -a, --arg Add an argument, JSON encoded | ||
| -c, --color Pretty print | ||
| -g, --grape Set the Grape hostname | ||
| -n, --numeric Add a numeric argument | ||
| -p, --port Set the Grape port number | ||
| -q, --query Filter response against query | ||
| -r, --raw Print string output as-is | ||
| -s, --string Add a string argument | ||
| -t, --tls Enable TLS | ||
| -w, --worker Don't lookup, use this worker | ||
| -h, --help Show help message | ||
| -V, --version Show version information | ||
| The \`--arg', \`--numeric' and \`--string' options can be repeated several times | ||
| to add multiple arguments, which will be passed in the same order as they were | ||
| supplied on the command line. | ||
| Examples: | ||
| ${ME##*/} 'foo' 'bar' Call the bar action of the foo service | ||
| ${ME##*/} -n 1 'foo' 'bar' The same thing, but passing a numeric argument | ||
| Report bugs to <@PACKAGE_BUGREPORT@>. | ||
| _EOF | ||
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| exit 1 | ||
| } | ||
|
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| # Show program's version. | ||
| function show_version { | ||
| @CAT@ <<_EOF | ||
| ${WHOAMI##*/} @PACKAGE_VERSION@ | ||
| Copyright (C) 2017-2025 Davide Scola <@PACKAGE_BUGREPORT@> | ||
| This is free software; see the source for copying conditions. There is | ||
| NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR | ||
| PURPOSE. | ||
| Written by Davide Scola. | ||
| _EOF | ||
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| exit 1 | ||
| } | ||
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| while true; do | ||
| case "$1" in | ||
| -a | --arg ) | ||
| REQUEST_ARGV+=(--arg "a$((++REQUEST_ARGC))" "${2}") | ||
| REQUEST_QUERY+=' += [ $a'"${REQUEST_ARGC}"' | fromjson ] | .'; shift 2 | ||
| ;; | ||
| -c | --color ) | ||
| COLOR='yes'; shift 1 | ||
| ;; | ||
| -g | --grape ) | ||
| [[ -z "${2}" ]] && { | ||
| echo "${ME##*/}: error: empty Grape hostname." >&2 | ||
| exit 1 | ||
| } | ||
|
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| LOOKUP_ARGV+=(--grape "${2}"); shift 2 | ||
| ;; | ||
| -h | --help ) | ||
| show_help; shift 1 | ||
| ;; | ||
| -n | --numeric ) | ||
| REQUEST_ARGV+=(--arg "n$((++REQUEST_ARGC))" "${2}") | ||
| REQUEST_QUERY+=' += [ $n'"${REQUEST_ARGC}"' | tonumber ] | .'; shift 2 | ||
| ;; | ||
| -p | --port ) | ||
| [[ -z "${2}" ]] && { | ||
| echo "${ME##*/}: error: empty Grape port." >&2 | ||
| exit 1 | ||
| } | ||
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| LOOKUP_ARGV+=(--port "${2}"); shift 2 | ||
| ;; | ||
| -q | --query ) | ||
| [[ -z "${2}" ]] && { | ||
| echo "${ME##*/}: error: empty response query." >&2 | ||
| exit 1 | ||
| } | ||
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| RESPONSE_QUERY="${2}"; shift 2 | ||
| ;; | ||
| -r | --raw ) | ||
| RESPONSE_ARGV+=(--raw-output); shift 1 | ||
| ;; | ||
| -s | --string ) | ||
| REQUEST_ARGV+=(--arg "s$((++REQUEST_ARGC))" "${2}") | ||
| REQUEST_QUERY+=' += [ $s'"${REQUEST_ARGC}"' | tostring ] | .'; shift 2 | ||
| ;; | ||
| -t | --tls ) | ||
| TLS='yes'; LOOKUP_ARGV+=(--tls); shift 1 | ||
| ;; | ||
| -V | --version ) | ||
| show_version; shift 1 | ||
| ;; | ||
| -w | --worker ) | ||
| [[ -z "${2}" ]] && { | ||
| echo "${ME##*/}: error: empty worker address." >&2 | ||
| exit 1 | ||
| } | ||
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| [[ "${2##*:}" =~ ^[0-9]+$ ]] || { | ||
| echo "${ME##*/}: error: invalid worker port number." >&2 | ||
| exit 1 | ||
| } | ||
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| [[ "$((${2##*:} & 0xFFFF))" -eq 0 ]] && { | ||
| echo "${ME##*/}: error: worker port number must be greater than zero." >&2 | ||
| exit 1 | ||
| } | ||
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| [[ "${2##*:}" -ne "$((${2##*:} & 0xFFFF))" ]] && { | ||
| echo "${ME##*/}: error: worker port number too big." >&2 | ||
| exit 1 | ||
| } | ||
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| REQUEST_WORKER="${2%:*}:$((${2##*:} & 0xFFFF))"; shift 2 | ||
| ;; | ||
| -- ) shift; break ;; | ||
| * ) break ;; | ||
| esac | ||
| done | ||
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| [[ -z "${COLOR}" ]] && { | ||
| RESPONSE_ARGV+=(--compact-output --monochrome-output) | ||
| } | ||
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| [[ "${#}" -lt 2 ]] && { | ||
| show_help | ||
| } | ||
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| [[ -f "${HOME}/.grenache-cli/grenache-cli.conf" ]] || { | ||
| echo "${ME##*/}: error: you need to run \`grenache-keygen' first." >&2 | ||
| exit "${EXIT_CODE}" | ||
| } | ||
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| exec {stderr}>&2 | ||
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| [[ x"${GRENACHE_CLI_DEBUG:+set}" != xset ]] && { | ||
| exec 2>/dev/null | ||
| } | ||
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| [[ "${REQUEST_ARGC}" -gt 0 ]] && { | ||
| REQUEST_ARGUMENTS="$(@JQ@ "${REQUEST_ARGV[@]}" --from-file <(echo "${REQUEST_QUERY}") <<<"${REQUEST_ARGUMENTS}")" | ||
|
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| [[ "${?}" -ne 0 ]] && { | ||
| echo "${ME##*/}: error: provided arguments are invalid." >&"${stderr}" | ||
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| exec {stderr}>&- | ||
| exit "${EXIT_CODE}" | ||
| } | ||
| } | ||
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| JSON="$(@CURL@ -qK "${HOME}/.grenache-cli/grenache-cli.conf" -A '@PACKAGE@/@PACKAGE_VERSION@' "http${TLS:+s}://${REQUEST_WORKER:-$(grenache-lookup "${LOOKUP_ARGV[@]}" "${1}")}" < <( \ | ||
| @JQ@ --null-input --compact-output --monochrome-output \ | ||
| --arg 'action' "${2}" \ | ||
| --arg 'service' "${1}" \ | ||
| --arg 'rid' "$(@UUIDGEN@)" \ | ||
| --arg 'args' "${REQUEST_ARGUMENTS}" \ | ||
| '[ $rid, $service, { "action": $action, "args": $args | fromjson } ]' \ | ||
| ))" | ||
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| [[ -z "${JSON}" ]] && { | ||
| echo "${ME##*/}: error: service ${1} cannot be queried." >&"${stderr}" | ||
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| exec {stderr}>&- | ||
| exit "${EXIT_CODE}" | ||
| } | ||
|
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| @JQ@ --exit-status '.[1]' >/dev/null <<<"${JSON}" && { | ||
| @JQ@ --raw-output '.[1]' <<<"${JSON}" >&"${stderr}" | ||
| } || { | ||
| EXIT_CODE=0 | ||
| @JQ@ "${RESPONSE_ARGV[@]}" --from-file <(printf '.[2] | %s' "${RESPONSE_QUERY}") <<<"${JSON}" | ||
| } | ||
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| exec {stderr}>&- | ||
| exit "${EXIT_CODE}" |