A metric aggregation that executes using scripts to provide a metric output. response = client.search( index: 'ledger', size: 0, body: { query: { match_all: {} }, aggregations: { profit: { scripted_metric: { init_script: 'state.transactions = []', map_script: "state.transactions.add(doc.type.value == 'sale' ? doc.amount.value : -1 * doc.amount.value)", combine_script: 'double profit = 0; for (t in