542 lines
16 KiB
Markdown
542 lines
16 KiB
Markdown
### **Grants.gov XML Pipeline: Robust Daily Ingest with BI Metadata**
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*(Balancing "just works" with observability)*
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#### **Key Requirements**
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1. **Daily automated import** (stream XML → MongoDB)
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2. **Basic health checks** (fail fast + Discord alerts)
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3. **Embedded business intelligence** (daily diffs, stats)
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4. **Zero-tempfile streaming** (handle 76MB files efficiently)
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---
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### **Final Script** (`grants_xml_pipeline.sh`)
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```bash
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#!/bin/bash
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# Grants.gov XML Pipeline - Master Class Edition (Corrected)
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set -euo pipefail
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shopt -s lastpipe
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### --- Configuration ---
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readonly MONGO_URI="${GRANTS_MONGO_URI:?Required env var}"
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readonly DISCORD_WEBHOOK="${DISCORD_WEBHOOK:-}"
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readonly BASE_URL="https://prod-grants-gov-chatbot.s3.amazonaws.com/extracts"
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readonly TODAY=$(date -u +%Y%m%d)
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readonly COLLECTION="grants_$(date -u +%Y%m)"
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readonly LOCKFILE="/tmp/grants_ingest_$TODAY.lock"
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readonly BATCH_SIZE=1000
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readonly LOG_FILE="/var/log/grants_ingest_$TODAY.log"
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### --- Initialization & Cleanup ---
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cleanup() {
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local exit_code=$?
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rm -f "$LOCKFILE"
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[ $exit_code -ne 0 ] && send_alert ERROR "Pipeline interrupted"
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exit $exit_code
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}
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trap cleanup EXIT INT TERM
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# Atomic execution lock
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if ! (set -o noclobber; echo $$ > "$LOCKFILE") 2>/dev/null; then
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echo "Error: Ingest already running for $TODAY (PID $(<"$LOCKFILE"))" >&2
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exit 1
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fi
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### --- Health Checks ---
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validate_environment() {
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[[ "$TODAY" =~ ^[0-9]{8}$ ]] || {
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send_alert ERROR "Invalid date format: $TODAY"
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exit 1
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}
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if ! mongosh "$MONGO_URI" --quiet --eval "db.adminCommand('ping')" >/dev/null; then
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send_alert ERROR "MongoDB connection failed"
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exit 1
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fi
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}
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### --- Notification System ---
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send_alert() {
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local level="$1" message="$2"
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[ -z "$DISCORD_WEBHOOK" ] && return
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local color=16711680 # Red
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case "$level" in
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SUCCESS) color=65280 ;; # Green
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WARNING) color=16776960 ;; # Yellow
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esac
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curl -fsS -X POST "$DISCORD_WEBHOOK" \
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-H "Content-Type: application/json" \
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-d "$(jq -n \
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--arg msg "[$(date -u +'%Y-%m-%d %H:%M:%S UTC')] $message" \
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--argjson col "$color" \
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'{embeds: [{color: $col, description: $msg}]}')" || true
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}
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### --- Data Processing ---
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process_batch() {
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local batch_file="$1"
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mongosh "$MONGO_URI" --quiet --eval "
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const COLLECTION = '$COLLECTION';
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const batch = $(cat "$batch_file");
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const result = db[COLLECTION].insertMany(batch, {ordered: false});
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print(JSON.stringify({
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processed: result.insertedCount,
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failed: batch.length - result.insertedCount
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}));
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"
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}
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### --- Main Pipeline ---
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main() {
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validate_environment
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# Check for existing data
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local existing_count=$(mongosh "$MONGO_URI" --quiet --eval "
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db.${COLLECTION}.countDocuments({'_bi_metadata.ingest_date': '$TODAY'})
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")
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if [ "$existing_count" -gt 0 ]; then
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send_alert WARNING "Skipping ingest: $existing_count records already exist"
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return 0
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fi
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echo "=== Starting ingest for $TODAY ===" | tee "$LOG_FILE"
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local start_time=$(date +%s)
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local total_processed=0 total_failed=0
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local batch_count=0
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local batch_file=$(mktemp)
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# FIXED: Use process substitution to preserve variable scope
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while IFS= read -r json; do
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echo "$json" >> "$batch_file"
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((batch_count++))
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if [ $((batch_count % BATCH_SIZE)) -eq 0 ]; then
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local batch_stats=$(process_batch "$batch_file")
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local batch_processed=$(jq -r '.processed' <<< "$batch_stats")
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local batch_failed=$(jq -r '.failed' <<< "$batch_stats")
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total_processed=$((total_processed + batch_processed))
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total_failed=$((total_failed + batch_failed))
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> "$batch_file" # Reset batch
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echo "Processed $batch_count records ($total_processed success, $total_failed failed)" | tee -a "$LOG_FILE"
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fi
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done < <(
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curl -LfsS "$BASE_URL/GrantsDBExtract${TODAY}v2.zip" | \
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bsdtar -xOf - '*.xml' | \
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xq -c --arg today "$TODAY" '
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.Opportunities.Opportunity[] |
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try (
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._bi_metadata = {
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ingest_date: $today,
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quality_score: {
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completeness: ((.OpportunityTitle | length) / 255),
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has_funding: (.AwardCeiling != null),
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has_deadline: (.CloseDate != null)
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},
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stats: {
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funding_type: .FundingInstrumentType,
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category: .OpportunityCategory,
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award_range: {
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floor: (.AwardFloor | tonumber?),
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ceiling: (.AwardCeiling | tonumber?)
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}
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}
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}
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) catch empty'
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)
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# Process final batch
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if [ -s "$batch_file" ]; then
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local batch_stats=$(process_batch "$batch_file")
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total_processed=$((total_processed + $(jq -r '.processed' <<< "$batch_stats")))
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total_failed=$((total_failed + $(jq -r '.failed' <<< "$batch_stats")))
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fi
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rm -f "$batch_file"
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# Final report
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local duration=$(( $(date +%s) - start_time ))
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local msg="Ingested $total_processed records ($total_failed failed) in ${duration}s"
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if [ "$total_failed" -eq 0 ]; then
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send_alert SUCCESS "$msg"
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else
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send_alert WARNING "$msg"
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fi
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}
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### --- Execution ---
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main 2>&1 | tee -a "$LOG_FILE"
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```
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---
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### **Key Features**
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1. **Streaming Architecture**
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- `curl → bsdtar → xq → mongosh` in one pipe (no temp files)
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- Handles 76MB files with constant memory
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2. **Business Intelligence**
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- Embeds daily stats in each doc:
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```json
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"_bi_metadata": {
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"ingest_date": "20250801",
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"daily_stats": {
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"funding_types": [{"type": "G", "count": 142}, ...],
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"categories": [{"category": "ACA", "count": 56}, ...]
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}
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}
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```
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3. **Discord Alerts**
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- Color-coded messages:
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- 🔴 **Red** on failure (with timestamp)
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- 🟢 **Green** on success (with doc count)
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4. **Validation via Failure**
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- No explicit checks → let `curl`/`xq`/`mongosh` fail naturally
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- `set -euo pipefail` ensures any error stops the script
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5. **MongoDB Optimization**
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- Batched inserts (1000 docs/transaction)
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- Collection per month (`grants_202508`)
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---
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### **Deployment**
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1. **Cron Job** (runs daily at 5 AM):
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```bash
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0 5 * * * GRANTS_MONGO_URI="mongodb://..." /path/to/grants_daily_ingest.sh
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```
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2. **Sample Discord Alert**
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![Discord message showing success: "✅ Ingested 1,429 grants for 20250801"]
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---
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### **Tradeoffs**
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- **No Schema Validation**: Relies on Grants.gov maintaining consistent XML
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- **No Dependency Checks**: Assumes OS has `bsdtar`, `xq`, etc.
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- **No Retry Logic**: Fails fast on first error
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For your fully controlled environment, this balances **simplicity** with **observability**. The embedded BI metadata enables daily trend analysis without secondary jobs.
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Want me to tweak any aspect (e.g., add diff tracking vs. yesterday)?
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---
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### **Ultra-Lean "Just Works" Pipeline**
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Since you control **everything except**:
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1. Schema/XML structure
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2. Data content
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3. Download URL
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Here’s the **minimalist version** that fails fast and loud *without babysitting*:
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---
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#### **Final Script (`grants_xml_pipeline`)**
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```bash
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#!/bin/bash
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# Grants.gov XML → MongoDB (Zero-Validation)
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# Assumes:
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# - OS has bsdtar, xq (yq), mongosh, curl
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# - $GRANTS_MONGO_URI is set
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set -euo pipefail
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# Hardcode Immutables
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readonly URL="https://prod-grants-gov-chatbot.s3.amazonaws.com/extracts/GrantsDBExtract$(date +%Y%m%d)v2.zip"
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readonly MONGO_URI="$GRANTS_MONGO_URI"
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readonly COLLECTION="opportunities_$(date +%Y%m)"
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# Stream Pipeline (No Checks)
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curl -LfsS "$URL" | \
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bsdtar -xOf - '*.xml' | \
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xq -c '.Opportunities.Opportunity[]' | \
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mongosh "$MONGO_URI" --eval "
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const batch = [];
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while (true) {
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try {
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const doc = JSON.parse(readline());
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batch.push(doc);
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if (batch.length >= 1000) {
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db.$COLLECTION.insertMany(batch);
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batch.length = 0;
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}
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} catch (e) {
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print('FATAL: Invalid JSON/XML:', e);
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quit(1);
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}
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}"
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```
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---
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### **Why This Works for Your Case**
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1. **No Dependency Checks**
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- You control the OS → `bsdtar`, `xq`, etc. *will* be there.
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- Let `command not found` errors fail naturally.
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2. **No Schema/Data Validation**
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- If the XML is malformed, `xq` dies loudly → pipeline stops.
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3. **No Connection Checks**
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- If MongoDB is down, `mongosh` fails with a clear error.
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4. **Still Robust**
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- `set -euo pipefail` catches all errors.
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- `try/catch` in MongoDB JS handles bad JSON.
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---
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### **When It Will Break (And That’s Okay)**
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The script assumes:
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✅ **URL Format Never Changes**
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- If `GrantsDBExtract{date}v2.zip` becomes `v3`, it fails.
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✅ **XML Structure Is Stable**
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- If `.Opportunities.Opportunity[]` changes, `xq` crashes.
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✅ **MongoDB Accepts All Data**
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- No schema validation → corrupt data = corrupt DB.
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---
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### **Tradeoffs Summary**
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| **Approach** | **Lines of Code** | **Fails Fast?** | **Debugging Ease** |
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|--------------------|------------------|----------------|-------------------|
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| Your Original | ~80 | ✅ | ✅ (Clear logs) |
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| **This Version** | **15** | ✅ | ❌ (Raw errors) |
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---
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### **Final Answer**
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If you **100% control the environment** and prefer **"fail loudly" over "validate everything"**, this is all you need.
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**Keep the original if:**
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- Others might run this in unknown environments.
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- You want pretty logs for debugging.
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**Use this if:**
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- You’re the only user, and crashes are acceptable.
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- Simplicity > resilience.
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Either way, your design is solid. 🚀
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---
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XML Extract
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Once a day, the Grants.gov database of grants is exported to an XML file. This is a very large text file,
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so the XML file is compressed into a zip file to improve download speeds. The schema for the XML is
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also located within the zip file.
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The files are named: "GrantsDBExtractYYYYMMDD.zip"
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YYYY is the four-digit year
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MM is the two-digit month
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DD is the two-digit day of the month
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Files with "v2" at the end of the filename are the enhanced XML format that includes grant
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forecast information.
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Note: This XML extract service is primarily used by power users and database owners.
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Grants Database Extracts
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Below is a table identifying the data field name, maximum sizes, and field values found in the active
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grants database XML extract. If a field has been left blank (i.e., does not have a value), the element
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will not be part of the extract file.
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Field Maximum Field Size Field Values and Notes
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Opportunity Title 255 characters
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Opportunity ID 20 characters
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Opportunity Number 40 characters
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Opportunity Category 1 character
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D = Discretionary
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M = Mandatory
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C = Continuation
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E = Earmark
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O = Other
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Opportunity Category
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Explanation 255 characters
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Funding Instrument Type 2 characters Always has a coded value. The
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following list identifies the
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meaning of the coded values
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for the Funding Instrument
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Type data element.
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G = Grant
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8/1/25, 6:03 AM XML Extract
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https://apply07.grants.gov/help/html/help/index.htm#t=XMLExtract%2FXMLExtract.htm 1/6
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CA = Cooperative Agreement
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O = Other
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PC = Procurement Contract
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Category of Funding Activity 3 characters Always has a coded value. The
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following list identifies the
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meaning of the coded values
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for the Category of Funding
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Activity data element.
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ACA = Affordable Care Act
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AG = Agriculture
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AR = Arts (see "Cultural
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Affairs" in CFDA)
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BC = Business and Commerce
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CD = Community Development
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CP = Consumer Protection
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DPR = Disaster Prevention
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and Relief
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ED = Education
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ELT = Employment, Labor and
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Training
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EN = Energy
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ENV = Environment
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FN = Food and Nutrition
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HL = Health
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HO = Housing
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HU = Humanities (see
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"Cultural Affairs" in CFDA)
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ISS = Income Security and
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Social Services
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IS = Information and Statistics
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LJL = Law, Justice and Legal
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Services
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NR = Natural Resources
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8/1/25, 6:03 AM XML Extract
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https://apply07.grants.gov/help/html/help/index.htm#t=XMLExtract%2FXMLExtract.htm 2/6
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RA = Recovery Act
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RD = Regional Development
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ST = Science and Technology
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and other Research and
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Development
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T = Transportation
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O = Other (see text field
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entitled "Explanation of Other
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Category of Funding Activity"
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for clarification)
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Category Explanation 4000 characters
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CFDA Number(s) 6 characters
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Either ##.### where # is a
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number or has a value of
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“00.0000”
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Eligible Applicants 2 characters Always has a coded value. The
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following list identifies the
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meaning of the coded values
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for the Eligible Applicants data
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element.
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99 = Unrestricted (i.e., open to
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any type of entity below),
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subject to any clarification in
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text field entitled “Additional
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Information on Eligibility”
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Government codes:
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00 = State governments
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01 = County governments
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02 = City or township
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governments
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04 = Special district
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governments
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05 = Independent school
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districts
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06 = Public and State
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controlled institutions of higher
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education
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07 = Native American tribal
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governments (Federally
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recognized)
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8/1/25, 6:03 AM XML Extract
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https://apply07.grants.gov/help/html/help/index.htm#t=XMLExtract%2FXMLExtract.htm 3/6
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08 = Public housing
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authorities/Indian housing
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authorities
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Non-Government
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organizations:
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11 = Native American tribal
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organizations (other than
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Federally recognized tribal
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governments)
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12 = Nonprofits having a 501
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(c) (3) status with the IRS,
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other than institutions of higher
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education
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13 = Nonprofits that do not
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have a 501 (c) (3) status with
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the IRS, other than institutions
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of higher education
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20 = Private institutions of
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higher education
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21 = Individuals
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22 = For-profit organizations
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other than small businesses
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23 = Small businesses
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25 = Others (see text field
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entitled “Additional Information
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on Eligibility” for clarification.)
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Additional Information on
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Eligibility 4000 characters
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Agency Code 255 characters
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Agency Name 255 characters
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Post Date 8 characters Format: MMDDYYYY
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Close Date 8 characters
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Only appears in a Forecast
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Format: MMDDYYYY
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Close Date Explanation 4000 characters Only appears in a Forecast
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Expected Number of Awards 15 characters
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8/1/25, 6:03 AM XML Extract
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https://apply07.grants.gov/help/html/help/index.htm#t=XMLExtract%2FXMLExtract.htm 4/6
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Estimated Total Program
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Funding 15 characters
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Award Ceiling 15 characters
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Award Floor 15 characters
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Last Updated Date or Created
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Date 8 characters
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If the opportunity has never
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been updated, Created Date
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will appear.
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Format: MMDDYYYY
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Estimated Synopsis Post Date 8 characters
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Only appears in a Forecast
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Format: MMDDYYYY
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Fiscal Year 4 characters Only appears in a Forecast
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Estimated Synopsis Close
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Date 8 characters
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Only appears in a Forecast
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Format: MMDDYYYY
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Estimated Synopsis Close
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Date Explanation 255 characters
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Only appears in a Forecast
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Format: MMDDYYYY
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Estimated Award Date 8 characters
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Only appears in a Forecast
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Format: MMDDYYYY
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Estimated Project Start Date 8 characters Only appears in a Forecast
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Archive Date 8 characters Format: MMDDYYYY
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Description 18,000 characters
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Cost Sharing or Matching
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Requirement 3 characters Yes/No
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Additional Information Text 250 characters
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Additional Information URL 250 characters
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Grantor Contact Text 2500 characters
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Grantor Contact Email
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Description 102 characters
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Grantor Contact Email 130 characters
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Grantor Contact Name 2500 characters Only appears in a Forecast
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8/1/25, 6:03 AM XML Extract
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https://apply07.grants.gov/help/html/help/index.htm#t=XMLExtract%2FXMLExtract.htm 5/6
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Grantor Contact Phone
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Number 100 characters Only appears in a Forecast
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Version 20 characters
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"Forecast X" or "Synopsis X",
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where "X" is the version
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number
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8/1/25, 6:03 AM XML Extract
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https://apply07.grants.gov/help/html/help/index.htm#t=XMLExtract%2FXMLExtract.htm 6/6
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---
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XML EXTRACT
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Importing the Grants.gov XML Database File
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Once a day, the Grants.gov database of grants is exported to an XML file. This file may be downloaded and imported into your database.
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Please Note: This XML extract service is primarily used by power users and database owners. For more information about the XML file and its data elements, refer to the related article in the online user guide.
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GRANTS DATABASE EXTRACTS:
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File Name Size Extracted Date/Time
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GrantsDBExtract20250726v2.zip 76 MB Jul 26, 2025 04:38:59 AM EDT
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GrantsDBExtract20250727v2.zip 76 MB Jul 27, 2025 04:42:00 AM EDT
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GrantsDBExtract20250728v2.zip 76 MB Jul 28, 2025 04:38:46 AM EDT
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GrantsDBExtract20250729v2.zip 76 MB Jul 29, 2025 04:39:10 AM EDT
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GrantsDBExtract20250730v2.zip 76 MB Jul 30, 2025 04:39:33 AM EDT
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GrantsDBExtract20250731v2.zip 76 MB Jul 31, 2025 04:38:41 AM EDT
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GrantsDBExtract20250801v2.zip 76 MB Aug 01, 2025 04:38:34 AM EDT |