From b42cf0c797661bfc94eb8162817eb8fa118a69a2 Mon Sep 17 00:00:00 2001
From: Alex Browne <stephenalexbrowne@gmail.com>
Date: Wed, 14 Nov 2018 18:39:06 -0800
Subject: Add workaround for broken save method

---
 packages/pipeline/src/ormconfig.ts                 |  2 +-
 .../pipeline/src/scripts/pull_missing_events.ts    | 22 +++++++++++++++++++++-
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/packages/pipeline/src/ormconfig.ts b/packages/pipeline/src/ormconfig.ts
index 0e489e560..64b5b1827 100644
--- a/packages/pipeline/src/ormconfig.ts
+++ b/packages/pipeline/src/ormconfig.ts
@@ -26,7 +26,7 @@ const config: ConnectionOptions = {
     type: 'postgres',
     url: process.env.ZEROEX_DATA_PIPELINE_DB_URL,
     synchronize: false,
-    logging: ['error', 'warn'],
+    // logging: ['error'],
     entities,
     migrations: ['./lib/migrations/**/*.js'],
 };
diff --git a/packages/pipeline/src/scripts/pull_missing_events.ts b/packages/pipeline/src/scripts/pull_missing_events.ts
index f53bc12bd..2dc81f205 100644
--- a/packages/pipeline/src/scripts/pull_missing_events.ts
+++ b/packages/pipeline/src/scripts/pull_missing_events.ts
@@ -38,7 +38,27 @@ async function getExchangeEventsAsync(provider: Web3ProviderEngine): Promise<voi
     const events = parseExchangeEvents(eventLogs);
     console.log(`Retrieved and parsed ${events.length} total events.`);
     console.log('Saving events...');
-    await eventsRepository.save(events, { chunk: Math.ceil(events.length / BATCH_SAVE_SIZE) });
+    // Note(albrow): This is a temporary hack because `save` is not working as
+    // documented and is causing a foreign key constraint violation. Hopefully
+    // can remove later because this "poor man's upsert" implementation operates
+    // on one event at a time and is therefore much slower.
+    // await eventsRepository.save(events, { chunk: Math.ceil(events.length / BATCH_SAVE_SIZE) });
+    for (const event of events) {
+        try {
+            await eventsRepository.save(event);
+        } catch {
+            // Assume this is a foreign key constraint error and try doing an
+            // update instead.
+            await eventsRepository.update(
+                {
+                    contractAddress: event.contractAddress,
+                    blockNumber: event.blockNumber,
+                    logIndex: event.logIndex,
+                },
+                event,
+            );
+        }
+    }
     const totalEvents = await eventsRepository.count();
     console.log(`Done saving events. There are now ${totalEvents} total events.`);
 }
-- 
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