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Merged
merged 3 commits into from
Nov 20, 2024
Merged

convert snapshot migration to use aggregation pipeline #1324

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24ba4bd
convert snapshot migration to use aggregation pipeline
dragonpoo Nov 20, 2024
0c5c344
delete after copying records
dragonpoo Nov 20, 2024
1eca3af
different migration based on mongo version.
dragonpoo Nov 20, 2024
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convert snapshot migration to use aggregation pipeline
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@dragonpoo
dragonpoo committed Nov 20, 2024
commit 24ba4bdabef1ee01f968455a42cbc1ccd8625254
45 changes: 27 additions & 18 deletions ...rvice/lowcoder-server/src/main/java/org/lowcoder/runner/migrations/DatabaseChangelog.java
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,7 @@

import java.time.Instant;
import java.time.temporal.ChronoUnit;
import java.util.Arrays;
import java.util.List;
import java.util.Set;

Expand Down Expand Up @@ -319,35 +320,43 @@ public void addTimeSeriesSnapshotHistory(MongockTemplate mongoTemplate, CommonCo

// Create the time-series collection if it doesn't exist
if (!mongoTemplate.collectionExists(ApplicationHistorySnapshotTS.class)) {
if(mongoVersion < 5) {
if (mongoVersion < 5) {
mongoTemplate.createCollection(ApplicationHistorySnapshotTS.class);
} else {
mongoTemplate.createCollection(ApplicationHistorySnapshotTS.class, CollectionOptions.empty().timeSeries("createdAt"));
}
}

Instant thresholdDate = Instant.now().minus(commonConfig.getQuery().getAppSnapshotKeepDuration(), ChronoUnit.DAYS);
List<ApplicationHistorySnapshot> snapshots = mongoTemplate.find(new Query().addCriteria(Criteria.where("createdAt").gte(thresholdDate)), ApplicationHistorySnapshot.class);
snapshots.forEach(snapshot -> {
ApplicationHistorySnapshotTS applicationHistorySnapshotTS = new ApplicationHistorySnapshotTS();
applicationHistorySnapshotTS.setApplicationId(snapshot.getApplicationId());
applicationHistorySnapshotTS.setDsl(snapshot.getDsl());
applicationHistorySnapshotTS.setContext(snapshot.getContext());
applicationHistorySnapshotTS.setCreatedAt(snapshot.getCreatedAt());
applicationHistorySnapshotTS.setCreatedBy(snapshot.getCreatedBy());
applicationHistorySnapshotTS.setModifiedBy(snapshot.getModifiedBy());
applicationHistorySnapshotTS.setUpdatedAt(snapshot.getUpdatedAt());
applicationHistorySnapshotTS.setId(snapshot.getId());
mongoTemplate.insert(applicationHistorySnapshotTS);
mongoTemplate.remove(snapshot);
});

// Ensure indexes if needed
// Use aggregation to move and transform data
Document match = new Document("$match",
new Document("createdAt", new Document("$gte", thresholdDate)));

Document project = new Document("$project", new Document()
.append("applicationId", 1)
.append("dsl", 1)
.append("context", 1)
.append("createdAt", 1)
.append("createdBy", 1)
.append("modifiedBy", 1)
.append("updatedAt", 1)
.append("id", "$_id")); // Map MongoDB's default `_id` to `id` if needed.

Document out = new Document("$out", "applicationHistorySnapshotTS"); // Target collection name

// Execute the aggregation pipeline
mongoTemplate.getDb()
.getCollection("applicationHistorySnapshot") // Original collection name
.aggregate(Arrays.asList(match, project, out))
.toCollection();

ensureIndexes(mongoTemplate, ApplicationHistorySnapshotTS.class,
makeIndex("applicationId"),
makeIndex("createdAt")
);
makeIndex("createdAt"));
}


private void addGidField(MongockTemplate mongoTemplate, String collectionName) {
// Create a query to match all documents
Query query = new Query();
Expand Down
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