71 lines
3.0 KiB
Java
71 lines
3.0 KiB
Java
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package com.common.service;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.jdbc.core.JdbcTemplate;
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import org.springframework.stereotype.Component;
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import org.springframework.transaction.support.TransactionSynchronizationManager;
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import java.util.LinkedHashMap;
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import java.util.Map;
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import java.util.concurrent.atomic.AtomicLong;
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/** Writes one aggregated outbox row in the same transaction as the corresponding fact batch. */
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@Component
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public class StatsProjectionOutboxWriter {
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private final JdbcTemplate jdbc;
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private final ObjectMapper objectMapper;
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private final AtomicLong events = new AtomicLong();
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private final AtomicLong failures = new AtomicLong();
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@Value("${stats.projection-async.enabled:true}") private boolean enabled;
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@Value("${stats.projection-async.outbox-table:stats_projection_outbox}") private String outboxTable;
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public StatsProjectionOutboxWriter(JdbcTemplate jdbc, ObjectMapper objectMapper) {
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this.jdbc = jdbc;
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this.objectMapper = objectMapper.copy();
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this.objectMapper.deactivateDefaultTyping();
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}
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public boolean isEnabled() { return enabled; }
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public int append(StatsProjectionOutboxEvent event) {
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if (!enabled || event == null || event.isEmpty()) return 0;
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if (!TransactionSynchronizationManager.isActualTransactionActive()) {
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throw new IllegalStateException("Stats projection outbox must be written inside a transaction");
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}
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event.validate();
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try {
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int inserted = jdbc.update("INSERT INTO " + safeTable(outboxTable) +
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" (event_id,event_schema,payload,status,attempt_count,next_attempt_at," +
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"created_at,updated_at) VALUES (?,?,?,'PENDING',0,SYSDATE,SYSDATE,SYSDATE)",
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event.getEventId(), event.getSchema(), objectMapper.writeValueAsString(event));
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events.incrementAndGet();
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return inserted;
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} catch (JsonProcessingException serializationFailure) {
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failures.incrementAndGet();
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throw new IllegalStateException("Failed to serialize stats projection outbox event", serializationFailure);
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} catch (RuntimeException databaseFailure) {
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failures.incrementAndGet();
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throw databaseFailure;
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}
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}
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public Map<String, Object> status() {
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Map<String, Object> result = new LinkedHashMap<>();
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result.put("enabled", enabled);
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result.put("outbox_table", outboxTable);
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result.put("events_written_total", events.get());
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result.put("write_failures_total", failures.get());
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return result;
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}
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static String safeTable(String table) {
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if (table == null || !table.matches("[A-Za-z][A-Za-z0-9_]*")) {
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throw new IllegalStateException("Invalid stats projection table: " + table);
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}
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return table;
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}
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}
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