Merge pull request 'Publish daily BTC price in public remoteStorage' (#581) from feature/btc-rate-tracker into master

Reviewed-on: #581
Reviewed-by: Greg <greg@noreply.kosmos.org>

site-cookbooks/kosmos-bitcoin/attributes/default.rb

@@ -111,3 +111,5 @@ node.default['btcpay']['postgres']['user'] = 'satoshi'
 node.default['peerswap']['repo'] = 'https://github.com/ElementsProject/peerswap.git'
 node.default['peerswap']['revision'] = 'master'
 node.default['peerswap-lnd']['source_dir'] = '/opt/peerswap'
+
+node.default['price_tracking']['rs_base_url'] = "https://storage.kosmos.org/kosmos/public/btc-price"

site-cookbooks/kosmos-bitcoin/recipes/price_tracking.rb

@@ -0,0 +1,59 @@
+#
+# Cookbook:: kosmos-bitcoin
+# Recipe:: price_tracking
+#
+# Track BTC rates and publish them via remoteStorage
+#
+
+%w[curl jq].each do |pkg|
+  apt_package pkg
+end
+
+daily_tracker_path = "/usr/local/bin/btc-price-tracker-daily"
+
+credentials = Chef::EncryptedDataBagItem.load('credentials', 'kosmos-rs')
+
+template daily_tracker_path do
+  source "btc-price-tracker-daily.sh.erb"
+  mode '0740'
+  variables rs_base_url: node['price_tracking']['rs_base_url']
+  notifies :restart, "systemd_unit[lnd-channel-backup.service]", :delayed
+end
+
+systemd_unit 'btc-price-tracker-daily.service' do
+  content({
+    Unit: {
+      Description: 'BTC price tracker (daily rates)',
+      After: 'network-online.target',
+      Wants: 'network-online.target'
+    },
+    Service: {
+      Type: 'oneshot',
+      ExecStart: daily_tracker_path,
+      Environment: "RS_AUTH=#{credentials["auth_tokens"]["/btc-price"]}"
+    },
+    Install: {
+      WantedBy: 'multi-user.target'
+    }
+  })
+  sensitive true
+  triggers_reload true
+  action [:create]
+end
+
+systemd_unit 'btc-price-tracker-daily.timer' do
+  content({
+    Unit: {
+      Description: 'Run BTC price tracker daily'
+    },
+    Timer: {
+      OnCalendar: '*-*-* 00:00:00',
+      Persistent: 'true'
+    },
+    Install: {
+      WantedBy: 'timers.target'
+    }
+  })
+  triggers_reload true
+  action [:create, :enable, :start]
+end

site-cookbooks/kosmos-bitcoin/templates/btc-price-tracker-daily.sh.erb

@@ -0,0 +1,49 @@
+#!/bin/bash
+
+# Calculate yesterday's date in YYYY-MM-DD format
+YESTERDAY=$(date -d "yesterday" +%Y-%m-%d)
+echo "Starting price tracking for $YESTERDAY" >&2
+
+# Fetch and process rates for a fiat currency
+get_price_data() {
+    local currency=$1
+    local data avg open24 last
+
+    data=$(curl -s "https://www.bitstamp.net/api/v2/ticker/btc${currency,,}/")
+    if [ $? -eq 0 ] && [ ! -z "$data" ]; then
+        echo "Successfully retrieved ${currency} price data" >&2
+        open24=$(echo "$data" | jq -r '.open_24')
+        last=$(echo "$data" | jq -r '.last')
+        avg=$(( (${open24%.*} + ${last%.*}) / 2 ))
+        echo $avg
+    else
+        echo "ERROR: Failed to retrieve ${currency} price data" >&2
+        exit 1
+    fi
+}
+
+# Get price data for each currency
+usd_avg=$(get_price_data "USD")
+eur_avg=$(get_price_data "EUR")
+gbp_avg=$(get_price_data "GBP")
+
+# Create JSON
+json="{\"EUR\":$eur_avg,\"USD\":$usd_avg,\"GBP\":$gbp_avg}"
+echo "Rates: $json" >&2
+
+# PUT in remote storage
+response=$(curl -X PUT \
+    -H "Authorization: Bearer $RS_AUTH" \
+    -H "Content-Type: application/json" \
+    -d "$json" \
+    -w "%{http_code}" \
+    -s \
+    -o /dev/null \
+    "<%= @rs_base_url %>/$YESTERDAY")
+
+if [ "$response" -eq 200 ] || [ "$response" -eq 201 ]; then
+   echo "Successfully uploaded price data" >&2
+else
+   echo "ERROR: Failed to upload price data. HTTP status: $response" >&2
+   exit 1
+fi