zhjwpku commented on code in PR #74:
URL: https://github.com/apache/iceberg-cpp/pull/74#discussion_r2043599178
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src/iceberg/json_internal.cc:
##########
@@ -231,6 +296,53 @@ nlohmann::json SchemaToJson(const Schema& schema) {
return json;
}
+nlohmann::json SnapshotRefToJson(const SnapshotRef& ref) {
+ nlohmann::json json;
+ json[kSnapshotId] = ref.snapshot_id;
+ json[kType] = SnapshotRefTypeToString(ref.type());
+ if (ref.type() == SnapshotRefType::kBranch) {
+ const auto& branch = std::get<SnapshotRef::Branch>(ref.retention);
+ if (branch.min_snapshots_to_keep.has_value()) {
+ json[kMinSnapshotsToKeep] = *branch.min_snapshots_to_keep;
+ }
+ if (branch.max_snapshot_age_ms.has_value()) {
+ json[kMaxSnapshotAgeMs] = *branch.max_snapshot_age_ms;
+ }
+ if (branch.max_ref_age_ms.has_value()) {
+ json[kMaxRefAgeMs] = *branch.max_ref_age_ms;
+ }
+ } else if (ref.type() == SnapshotRefType::kTag) {
+ const auto& tag = std::get<SnapshotRef::Tag>(ref.retention);
+ if (tag.max_ref_age_ms.has_value()) {
+ json[kMaxRefAgeMs] = *tag.max_ref_age_ms;
+ }
+ }
+ return json;
+}
+
+nlohmann::json SnapshotToJson(const Snapshot& snapshot) {
+ nlohmann::json json;
+ json[kSnapshotId] = snapshot.snapshot_id;
+ if (snapshot.parent_snapshot_id.has_value()) {
+ json[kParentSnapshotId] = *snapshot.parent_snapshot_id;
+ }
+ json[kSequenceNumber] = snapshot.sequence_number;
+ json[kTimestampMs] = snapshot.timestamp_ms;
+ json[kManifestList] = snapshot.manifest_list;
+
+ nlohmann::json summary_json;
+ for (const auto& [key, value] : snapshot.summary) {
+ summary_json[key] = value;
+ }
+ json[kSummary] = summary_json;
Review Comment:
brilliant, done that way.
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