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68 lines
2.0 KiB
68 lines
2.0 KiB
#!/bin/sh
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# Use the value of the corresponding env var (if present),
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# or a default value otherwise.
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: "${DATA_FOLDER:="data"}"
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: "${ROCKET_PORT:="80"}"
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CONFIG_FILE="${DATA_FOLDER}"/config.json
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# Check if there is a .env file configured
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# If that is the case, load it into the environment before running any check
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if [ -z "${ENV_FILE}" ]; then
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ENV_FILE=".env"
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fi
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if [ -r "${ENV_FILE}" ]; then
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# shellcheck disable=SC1090
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. "${ENV_FILE}"
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fi
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# Given a config key, return the corresponding config value from the
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# config file. If the key doesn't exist, return an empty string.
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get_config_val() {
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key="$1"
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# Extract a line of the form:
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# "domain": "https://bw.example.com/path",
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grep "\"${key}\":" "${CONFIG_FILE}" |
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# To extract just the value (https://bw.example.com/path), delete:
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# (1) everything up to and including the first ':',
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# (2) whitespace and '"' from the front,
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# (3) ',' and '"' from the back.
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sed -e 's/[^:]\+://' -e 's/^[ "]\+//' -e 's/[,"]\+$//'
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}
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# Extract the base path from a domain URL. For example:
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# - `` -> ``
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# - `https://bw.example.com` -> ``
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# - `https://bw.example.com/` -> ``
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# - `https://bw.example.com/path` -> `/path`
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# - `https://bw.example.com/multi/path` -> `/multi/path`
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get_base_path() {
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echo "$1" |
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# Delete:
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# (1) everything up to and including '://',
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# (2) everything up to '/',
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# (3) trailing '/' from the back.
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sed -e 's|.*://||' -e 's|[^/]\+||' -e 's|/*$||'
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}
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# Read domain URL from config.json, if present.
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if [ -r "${CONFIG_FILE}" ]; then
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domain="$(get_config_val 'domain')"
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if [ -n "${domain}" ]; then
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# config.json 'domain' overrides the DOMAIN env var.
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DOMAIN="${domain}"
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fi
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fi
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addr="${ROCKET_ADDRESS}"
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if [ -z "${addr}" ] || [ "${addr}" = '0.0.0.0' ] || [ "${addr}" = '::' ]; then
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addr='localhost'
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fi
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base_path="$(get_base_path "${DOMAIN}")"
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if [ -n "${ROCKET_TLS}" ]; then
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s='s'
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fi
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curl --insecure --fail --silent --show-error \
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"http${s}://${addr}:${ROCKET_PORT}${base_path}/alive" || exit 1
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