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42 lines
1.1 KiB
Bash
42 lines
1.1 KiB
Bash
#!/usr/bin/env bash
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set -e -o pipefail
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# this is a special command to allow inspection on this container
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if [[ "$1" == "inspect" ]]; then
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shift
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exec "$@"
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fi
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cd "$(dirname "${BASH_SOURCE[0]}")"
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LNTOP_HOME_DIR=.lntop
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LNTOP_CONFIG="$LNTOP_HOME_DIR/config.toml"
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LNTOP_CONFIG_TEMPLATE="$LNTOP_HOME_DIR/config-template.toml"
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LNTOP_HOST_GID=${LNTOP_HOST_GID:?required}
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LNTOP_HOST_UID=${LNTOP_HOST_UID:?required}
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# make sure lntop's home dir exists (should be mapped to host via a volume)
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if [[ ! -d "$LNTOP_HOME_DIR" ]]; then
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mkdir -p "$LNTOP_HOME_DIR"
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chown ${LNTOP_HOST_UID}:${LNTOP_HOST_GID} "$LNTOP_HOME_DIR"
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fi
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eval_template() {
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local template_file=$1
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eval "cat <<TEMPLATE_EOF_MARKER
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$(<${template_file})
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TEMPLATE_EOF_MARKER
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" 2> /dev/null
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}
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# stage template file only if it does not already exist
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if [[ ! -e "$LNTOP_CONFIG_TEMPLATE" ]]; then
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cp initial-config-template.toml "$LNTOP_CONFIG_TEMPLATE"
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fi
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# we dynamically prepare config from template by baking in env variables
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echo "# !!! GENERATED !!! DO NOT EDIT THIS FILE, EDIT config-template.toml INSTEAD" > "$LNTOP_CONFIG"
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eval_template initial-config-template.toml >> "$LNTOP_CONFIG"
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exec lntop "$@" |