working out the worker/execution interface
This commit is contained in:
209
packs/core/actions/http_request.sh
Executable file
209
packs/core/actions/http_request.sh
Executable file
@@ -0,0 +1,209 @@
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#!/bin/bash
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# HTTP Request Action - Core Pack
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# Make HTTP requests to external APIs using curl
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set -e
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set -o pipefail
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# Read JSON parameters from stdin
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INPUT=$(cat)
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# Parse required parameters
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URL=$(echo "$INPUT" | jq -r '.url // ""')
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if [ -z "$URL" ] || [ "$URL" = "null" ]; then
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echo "ERROR: 'url' parameter is required" >&2
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exit 1
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fi
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# Parse optional parameters
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METHOD=$(echo "$INPUT" | jq -r '.method // "GET"' | tr '[:lower:]' '[:upper:]')
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HEADERS=$(echo "$INPUT" | jq -r '.headers // {}')
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BODY=$(echo "$INPUT" | jq -r '.body // ""')
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JSON_BODY=$(echo "$INPUT" | jq -c '.json_body // null')
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QUERY_PARAMS=$(echo "$INPUT" | jq -r '.query_params // {}')
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TIMEOUT=$(echo "$INPUT" | jq -r '.timeout // 30')
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VERIFY_SSL=$(echo "$INPUT" | jq -r '.verify_ssl // true')
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AUTH_TYPE=$(echo "$INPUT" | jq -r '.auth_type // "none"')
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FOLLOW_REDIRECTS=$(echo "$INPUT" | jq -r '.follow_redirects // true')
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MAX_REDIRECTS=$(echo "$INPUT" | jq -r '.max_redirects // 10')
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# Build URL with query parameters
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FINAL_URL="$URL"
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if [ "$QUERY_PARAMS" != "{}" ] && [ "$QUERY_PARAMS" != "null" ]; then
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QUERY_STRING=$(echo "$QUERY_PARAMS" | jq -r 'to_entries | map("\(.key)=\(.value | @uri)") | join("&")')
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if [[ "$FINAL_URL" == *"?"* ]]; then
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FINAL_URL="${FINAL_URL}&${QUERY_STRING}"
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else
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FINAL_URL="${FINAL_URL}?${QUERY_STRING}"
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fi
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fi
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# Build curl arguments array
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CURL_ARGS=(
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-X "$METHOD"
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-s # Silent mode
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-w "\n%{http_code}\n%{time_total}\n%{url_effective}\n" # Write out metadata
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--max-time "$TIMEOUT"
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--connect-timeout 10
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)
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# Handle SSL verification
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if [ "$VERIFY_SSL" = "false" ]; then
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CURL_ARGS+=(-k)
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fi
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# Handle redirects
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if [ "$FOLLOW_REDIRECTS" = "true" ]; then
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CURL_ARGS+=(-L --max-redirs "$MAX_REDIRECTS")
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fi
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# Add headers
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if [ "$HEADERS" != "{}" ] && [ "$HEADERS" != "null" ]; then
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while IFS= read -r header; do
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if [ -n "$header" ]; then
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CURL_ARGS+=(-H "$header")
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fi
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done < <(echo "$HEADERS" | jq -r 'to_entries | map("\(.key): \(.value)") | .[]')
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fi
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# Handle authentication
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case "$AUTH_TYPE" in
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basic)
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AUTH_USERNAME=$(echo "$INPUT" | jq -r '.auth_username // ""')
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AUTH_PASSWORD=$(echo "$INPUT" | jq -r '.auth_password // ""')
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if [ -n "$AUTH_USERNAME" ] && [ "$AUTH_USERNAME" != "null" ]; then
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CURL_ARGS+=(-u "${AUTH_USERNAME}:${AUTH_PASSWORD}")
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fi
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;;
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bearer)
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AUTH_TOKEN=$(echo "$INPUT" | jq -r '.auth_token // ""')
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if [ -n "$AUTH_TOKEN" ] && [ "$AUTH_TOKEN" != "null" ]; then
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CURL_ARGS+=(-H "Authorization: Bearer ${AUTH_TOKEN}")
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fi
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;;
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esac
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# Handle request body
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if [ "$JSON_BODY" != "null" ] && [ "$JSON_BODY" != "" ]; then
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CURL_ARGS+=(-H "Content-Type: application/json")
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CURL_ARGS+=(-d "$JSON_BODY")
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elif [ -n "$BODY" ] && [ "$BODY" != "null" ]; then
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CURL_ARGS+=(-d "$BODY")
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fi
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# Capture start time
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START_TIME=$(date +%s%3N)
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# Make the request and capture response headers
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TEMP_HEADERS=$(mktemp)
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CURL_ARGS+=(--dump-header "$TEMP_HEADERS")
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# Execute curl and capture output
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set +e
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RESPONSE=$(curl "${CURL_ARGS[@]}" "$FINAL_URL" 2>&1)
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CURL_EXIT_CODE=$?
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set -e
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# Calculate elapsed time
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END_TIME=$(date +%s%3N)
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ELAPSED_MS=$((END_TIME - START_TIME))
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# Parse curl output (last 3 lines are: http_code, time_total, url_effective)
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BODY_OUTPUT=$(echo "$RESPONSE" | head -n -3)
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HTTP_CODE=$(echo "$RESPONSE" | tail -n 3 | head -n 1 | tr -d '\r\n')
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CURL_TIME=$(echo "$RESPONSE" | tail -n 2 | head -n 1 | tr -d '\r\n')
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EFFECTIVE_URL=$(echo "$RESPONSE" | tail -n 1 | tr -d '\r\n')
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# Ensure HTTP_CODE is numeric, default to 0 if not
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if ! [[ "$HTTP_CODE" =~ ^[0-9]+$ ]]; then
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HTTP_CODE=0
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fi
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# If curl failed, handle error
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if [ "$CURL_EXIT_CODE" -ne 0 ]; then
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ERROR_MSG="curl failed with exit code $CURL_EXIT_CODE"
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# Determine specific error
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case $CURL_EXIT_CODE in
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6) ERROR_MSG="Could not resolve host" ;;
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7) ERROR_MSG="Failed to connect to host" ;;
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28) ERROR_MSG="Request timeout" ;;
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35) ERROR_MSG="SSL/TLS connection error" ;;
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52) ERROR_MSG="Empty reply from server" ;;
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56) ERROR_MSG="Failure receiving network data" ;;
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*) ERROR_MSG="curl error code $CURL_EXIT_CODE" ;;
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esac
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# Output error result as JSON
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jq -n \
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--arg error "$ERROR_MSG" \
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--argjson elapsed "$ELAPSED_MS" \
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--arg url "$FINAL_URL" \
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'{
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status_code: 0,
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headers: {},
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body: "",
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json: null,
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elapsed_ms: $elapsed,
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url: $url,
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success: false,
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error: $error
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}'
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rm -f "$TEMP_HEADERS"
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exit 1
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fi
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# Parse response headers into JSON
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HEADERS_JSON="{}"
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if [ -f "$TEMP_HEADERS" ]; then
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# Skip the status line and parse headers
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HEADERS_JSON=$(grep -v "^HTTP/" "$TEMP_HEADERS" | grep ":" | sed 's/\r$//' | jq -R -s -c '
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split("\n") |
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map(select(length > 0)) |
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map(split(": "; "") | select(length > 1) | {key: .[0], value: (.[1:] | join(": "))}) |
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map({(.key): .value}) |
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add // {}
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' || echo '{}')
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rm -f "$TEMP_HEADERS"
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fi
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# Ensure HEADERS_JSON is valid JSON
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if ! echo "$HEADERS_JSON" | jq empty 2>/dev/null; then
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HEADERS_JSON="{}"
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fi
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# Determine if successful (2xx status code)
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SUCCESS=false
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if [ "$HTTP_CODE" -ge 200 ] && [ "$HTTP_CODE" -lt 300 ]; then
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SUCCESS=true
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fi
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# Try to parse body as JSON
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JSON_PARSED="null"
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if [ -n "$BODY_OUTPUT" ] && echo "$BODY_OUTPUT" | jq empty 2>/dev/null; then
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JSON_PARSED=$(echo "$BODY_OUTPUT" | jq -c '.' || echo 'null')
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fi
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# Output result as JSON
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jq -n \
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--argjson status_code "$HTTP_CODE" \
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--argjson headers "$HEADERS_JSON" \
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--arg body "$BODY_OUTPUT" \
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--argjson json "$JSON_PARSED" \
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--argjson elapsed "$ELAPSED_MS" \
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--arg url "$EFFECTIVE_URL" \
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--argjson success "$SUCCESS" \
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'{
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status_code: $status_code,
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headers: $headers,
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body: $body,
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json: $json,
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elapsed_ms: $elapsed,
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url: $url,
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success: $success
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}'
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# Exit with success
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exit 0
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