Fix: MAP value converter for data via debezium

debezium-server-voyager/debezium-server-voyagerexporter/src/main/java/io/debezium/server/ybexporter/DebeziumRecordTransformer.java

@@ -16,12 +16,16 @@
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Map;
+import java.util.HashMap;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * This class ensures of doing any transformation of the record received from debezium
  * before actually writing that record.
  */
 public class DebeziumRecordTransformer implements RecordTransformer {
+	private static final Logger LOGGER = LoggerFactory.getLogger(DebeziumRecordTransformer.class);
 
     private JsonConverter jsonConverter;
     public DebeziumRecordTransformer(){
@@ -70,6 +74,42 @@ private String makeFieldValueSerializable(Object fieldValue, Field field){
             case BYTES:
             case STRUCT:
                 return toKafkaConnectJsonConverted(fieldValue, field);
+            case MAP:
+	            StringBuilder mapString = new StringBuilder();
+                for (Map.Entry<String, String> entry : ((HashMap<String, String>) fieldValue).entrySet()) {
+                    String key = entry.getKey();
+                    String val = entry.getValue();
+                    LOGGER.debug("[MAP] before transforming key - {}", key);
+                    LOGGER.debug("[MAP] before transforming value - {}", val);                    
+                    /*
+                     Escaping the key and value here for the  double quote (")" and backslash char (\) with a backslash character as mentioned here 
+                     https://www.postgresql.org/docs/9/hstore.html#:~:text=To%20include%20a%20double%20quote%20or%20a%20backslash%20in%20a%20key%20or%20value%2C%20escape%20it%20with%20a%20backslash.
+
+                     Following the order of escaping the backslash first and then the double quote becasue first escape the backslashes in the string and adding the backslash for escaping to handle case like
+                     e.g. key - "a\"b" -> (first escaping) -> "a\\"b" -> (second escaping) -> "a\\\"b"
+                     */
+                    key = key.replace("\\", "\\\\"); // escaping backslash \ -> \\ ( "a\b" -> "a\\b" ) "
+                    val = val.replace("\\", "\\\\");
+                    key = key.replace("\"", "\\\""); // escaping double quotes " -> \" ( "a"b" -> "a\"b" ) "
+                    val = val.replace("\"", "\\\"");
+
+		            LOGGER.debug("[MAP] after transforming key - {}", key);
+                    LOGGER.debug("[MAP] after transforming value - {}", val);
+
+                    mapString.append("\"");
+                    mapString.append(key);
+                    mapString.append("\"");
+                    mapString.append(" => ");
+                    mapString.append("\"");
+                    mapString.append(val);
+                    mapString.append("\"");
+                    mapString.append(",");
+                }
+		        if(mapString.length() == 0) {
+                    return "";
+                } 
+                return mapString.toString().substring(0, mapString.length() - 1);
+
         }
         return fieldValue.toString();
     }

migtests/scripts/functions.sh

@@ -150,8 +150,6 @@ EOF
 	run_sqlplus_as_sys ${pdb_name} "create-pdb-tablespace.sql"
 	cp ${SCRIPTS}/oracle/live-grants.sql oracle-inputs.sql
 	run_sqlplus_as_sys ${cdb_name} "oracle-inputs.sql"
-	rm create-pdb-tablespace.sql
-	rm oracle-inputs.sql
 }
 
 grant_permissions_for_live_migration_pg() {
@@ -394,6 +392,7 @@ import_data() {
 		--send-diagnostics=false 
 		--truncate-splits true
 		--max-retries 1
+		--yes
 		"
 
 		if [ "${SOURCE_DB_TYPE}" != "postgresql" ]

migtests/tests/analyze-schema/dummy-export-dir/schema/tables/table.sql

@@ -390,12 +390,13 @@ CREATE TABLE public.locations (
 
 CREATE TABLE image (title text, raster lo);
 
+CREATE TABLE employees (id INT PRIMARY KEY, salary INT, data hstore);
+
 -- IS JSON Predicate
 CREATE TABLE public.json_data (
     id SERIAL PRIMARY KEY,
     data_column TEXT NOT NULL CHECK (data_column IS JSON)
 );
-CREATE TABLE employees (id INT PRIMARY KEY, salary INT);
 -- create table with multirange data types
 
 -- Create tables with primary keys directly

migtests/tests/analyze-schema/expected_issues.json

@@ -2143,5 +2143,16 @@
             "GH": "https://github.com/yugabyte/yugabyte-db/issues/25575",
             "DocsLink": "https://docs.yugabyte.com/preview/yugabyte-voyager/known-issues/postgresql/#postgresql-12-and-later-features",
             "MinimumVersionsFixedIn": null
+        },
+        {
+            "IssueType": "migration_caveats",
+            "ObjectType": "TABLE",
+            "ObjectName": "employees",
+            "Reason": "Unsupported datatype for Live migration with fall-forward/fallback - hstore on column - data",
+            "SqlStatement": "CREATE TABLE employees (id INT PRIMARY KEY, salary INT, data hstore);",
+            "Suggestion": "",
+            "GH": "https://github.com/yugabyte/yb-voyager/issues/1731",
+            "DocsLink": "https://docs.yugabyte.com/preview/yugabyte-voyager/known-issues/postgresql/#unsupported-datatypes-by-voyager-during-live-migration",
+            "MinimumVersionsFixedIn": null
         }
 ]

migtests/tests/analyze-schema/summary.json

@@ -33,7 +33,7 @@
             {
                 "ObjectType": "TABLE",
                 "TotalCount": 64,
-                "InvalidCount": 53,
+                "InvalidCount": 54,
                 "ObjectNames": "test_table_in_type_file, sales_data, salaries2, sales, test_1, test_2, test_non_pk_multi_column_list, test_3, test_4, test_5, test_6, test_7, test_8, test_9, order_details, public.employees4, enum_example.bugs, table_xyz, table_abc, table_1, table_test, test_interval, public.range_columns_partition_test, public.range_columns_partition_test_copy, anydata_test, anydataset_test, anytype_test, uritype_test, \"Test\", public.meeting, public.pr, public.foreign_def_test, public.users, foreign_def_test1, foreign_def_test2, unique_def_test, unique_def_test1, test_xml_type, test_xid_type, public.test_jsonb, public.inet_type, public.citext_type, public.documents, public.ts_query_table, combined_tbl, combined_tbl1, test_udt, test_arr_enum, public.locations, public.xml_data_example, image, public.json_data, employees, bigint_multirange_table, date_multirange_table, int_multirange_table, numeric_multirange_table, timestamp_multirange_table, timestamptz_multirange_table, users_unique_nulls_distinct, users_unique_nulls_not_distinct, sales_unique_nulls_not_distinct, sales_unique_nulls_not_distinct_alter, users_unique_nulls_not_distinct_index"            },
             {
                 "ObjectType": "INDEX",

migtests/tests/pg/assessment-report-test/expectedAssessmentReport.json

@@ -20,9 +20,9 @@
 			},
 			{
 				"ObjectType": "EXTENSION",
-				"TotalCount": 4,
+				"TotalCount": 5,
 				"InvalidCount": 0,
-				"ObjectNames": "citext, pgcrypto, pg_stat_statements, lo"
+				"ObjectNames": "citext, pgcrypto, pg_stat_statements, lo, hstore"
 			},
 			{
 				"ObjectType": "TYPE",
@@ -1107,7 +1107,7 @@
 			"SchemaName": "public",
 			"ObjectName": "combined_tbl",
 			"RowCount": 0,
-			"ColumnCount": 12,
+			"ColumnCount": 13,
 			"Reads": 0,
 			"Writes": 0,
 			"ReadsPerSecond": 0,
@@ -2779,6 +2779,10 @@
 				{
 					"ObjectName": "schema2.products.item (schema2.item_details)",
 					"SqlStatement": ""
+				},
+				{
+					"ObjectName": "public.combined_tbl.data (public.hstore)",
+					"SqlStatement": ""
 				}
 			],
 			"DocsLink": "https://docs.yugabyte.com/preview/yugabyte-voyager/known-issues/postgresql/#unsupported-datatypes-by-voyager-during-live-migration",

migtests/tests/pg/assessment-report-test/pg_assessment_report.sql

@@ -206,6 +206,8 @@ CREATE TYPE public.address_type AS (
 );
 
 CREATE EXTENSION lo;
+
+CREATE EXTENSION hstore;
 --other misc types
 create table public.combined_tbl (
 	id int, 
@@ -220,6 +222,7 @@ create table public.combined_tbl (
     address address_type,
     raster lo,
     arr_enum enum_kind[],
+    data hstore,
     PRIMARY KEY (id, arr_enum)
 );
 

migtests/tests/pg/datatypes/data-migration-report-live-migration-fallf.json

@@ -271,5 +271,44 @@
         "exported_updates": 0,
         "exported_deletes": 0,
         "final_row_count": 2
+    },
+    {
+        "table_name": "public.\"hstore_example\"",
+        "db_type": "source",
+        "exported_snapshot_rows": 13,
+        "imported_snapshot_rows": 0,
+        "imported_inserts": 0,
+        "imported_updates": 0,
+        "imported_deletes": 0,
+        "exported_inserts": 3,
+        "exported_updates": 5,
+        "exported_deletes": 0,
+        "final_row_count": 16
+    },
+    {
+        "table_name": "public.\"hstore_example\"",
+        "db_type": "target",
+        "exported_snapshot_rows": 0,
+        "imported_snapshot_rows": 13,
+        "imported_inserts": 3,
+        "imported_updates": 5,
+        "imported_deletes": 0,
+        "exported_inserts": 0,
+        "exported_updates": 0,
+        "exported_deletes": 0,
+        "final_row_count": 16
+    },
+    {
+        "table_name": "public.\"hstore_example\"",
+        "db_type": "source-replica",
+        "exported_snapshot_rows": 0,
+        "imported_snapshot_rows": 13,
+        "imported_inserts": 3,
+        "imported_updates": 5,
+        "imported_deletes": 0,
+        "exported_inserts": 0,
+        "exported_updates": 0,
+        "exported_deletes": 0,
+        "final_row_count": 16
     }
 ]

migtests/tests/pg/datatypes/export_data_status-report.json

@@ -33,5 +33,10 @@
     "table_name": "null_and_default",
     "status": "DONE",
     "exported_count": 2
+  },
+  {
+    "exported_count": 13,
+    "status": "DONE",
+    "table_name": "hstore_example"
   }
 ]

migtests/tests/pg/datatypes/import_data_status-report.json

@@ -34,6 +34,13 @@
     "imported_count": 3,
     "percentage_complete": 100
   },
+  {
+    "table_name": "public.\"hstore_example\"",
+    "status": "DONE",
+    "total_count": 13,
+    "imported_count": 13,
+    "percentage_complete": 100
+  },
   {
     "table_name": "public.\"null_and_default\"",
     "status": "DONE",

migtests/tests/pg/datatypes/pg_datatypes_data.sql

@@ -34,3 +34,22 @@ select * from datatypes2;
 insert into null_and_default (id) VALUES (1);
 insert into null_and_default VALUES(2, NULL, NULL, NULL);
 
+INSERT INTO hstore_example (data) 
+VALUES 
+    ('"key1"=>"value1", "key2"=>"value2"'),
+    (hstore('a"b', 'd\"a')),
+    (NULL),
+    (''),
+    ('key1 => value1, key2 => value2'),
+    (hstore(ARRAY['key1', 'key2'], ARRAY['value1', 'value2'])),
+    ('key7 => value7, key8 => 123, key9 => true'),
+    ('"paperback" => "243",
+     "publisher" => "postgresqltutorial.com",
+     "language"  => "English",
+     "ISBN-13"   => "978-1449370000",
+     "weight"    => "11.2 ounces"'),
+    (hstore(ROW(1,'{"key1=value1, key2=value2"}'))),
+    (hstore('json_field', '{"key1=value1, key2={"key1=value1, key2=value2"}"}')), --hstore() key and values need no extra processing
+    ('"{\"key1=value1, key2=value2\"}"=>"{\"key1=value1, key2={\"key1=value1, key2=value2\"}\"}"'), --single quotes string need to escaped properly
+    (hstore('"{""key1"":""value1"",""key2"":""value2""}"', '{"key1=value1, key2={"key1=value1, key2=value2"}"}')),
+    (hstore('"{key1:value1,key2:value2}"', '{"key1=value1, key2={"key1=value1, key2=value2"}"}'));

migtests/tests/pg/datatypes/pg_datatypes_schema.sql

@@ -41,5 +41,9 @@ create table datatypes2(id serial primary key, v1 json, v2 BIT(10), v3 int ARRAY
 drop table if exists null_and_default;
 create table null_and_default(id int PRIMARY KEY, b boolean default false, i int default 10, val varchar default 'testdefault');
 
+create EXTENSION hstore;
 
-
+CREATE TABLE hstore_example (
+    id SERIAL PRIMARY KEY,
+    data hstore
+);

migtests/tests/pg/datatypes/source_delta.sql

@@ -51,5 +51,34 @@ UPDATE datatypes2
 SET v1 = '{"updated": true}', v2 = B'0101010101', v5 = B'101010101010101010101010101010', v3 = ARRAY[5, 6, 7, 8], v4 = '{{"e", "f"}, {"g", "h"}}'
 WHERE v1 IS NULL;
 
+UPDATE hstore_example 
+SET data = data || 'key3 => value3'
+WHERE id = 1;
 
+UPDATE hstore_example 
+SET data = hstore('{"key1=value1, key2=value2"}', '{"key1=value1, key2={"key1=value1, key2=value2"}"}')
+WHERE id = 3;
 
+UPDATE hstore_example 
+SET data = '"{\"key1=value1, key2=value2\"}"=>"{\"key1=value1, key2={\"key1=value1, key2=value2\"}\"}"'
+WHERE id = 7;
+
+INSERT INTO hstore_example (data) 
+VALUES 
+    ('key5 => value5, key6 => value6');
+
+INSERT INTO hstore_example (data) 
+VALUES 
+    (hstore('{"key1=value1, key2=value2"}', '{"key1=value1, key2={"key1=value1, key2=value2"}"}'));
+
+INSERT INTO hstore_example (data) 
+VALUES 
+    ('');
+
+UPDATE hstore_example 
+SET data = NULL
+WHERE id = 5;
+
+UPDATE hstore_example 
+SET data = ''
+WHERE id = 6;

migtests/tests/pg/datatypes/target_delta.sql

@@ -61,3 +61,26 @@ SET v1 = '{"new": "data"}', v2 = B'1111000011', v5=B'001010100101010101010101010
 
 DELETE FROM datatypes2
 WHERE 5 = ANY(v3);
+
+-- NOT WORKING WIT H YB CDC GRPC connector as of now
+-- INSERT INTO hstore_example (data) 
+-- VALUES 
+--     ('key7 => value7, key8 => value8');
+
+-- UPDATE hstore_example 
+-- SET data = delete(data, 'key2')
+-- WHERE id = 8;
+
+-- DELETE FROM hstore_example WHERE data ? 'key5';
+
+-- INSERT INTO hstore_example (data) 
+-- VALUES 
+-- (hstore('"{""key1"":""value1"",""key2"":""value2""}"', '{"key1=value1, key2={"key1=value1, key2=value2"}"}'));
+
+-- UPDATE hstore_example 
+-- SET data = hstore('{"key1=value1, key2=value2"}', '{"key1=value1, key2={"key1=value1, key2=value2"}"}')
+-- WHERE id = 15;
+
+-- UPDATE hstore_example 
+-- SET data = '"{\"key1=value1, key2=value2\"}"=>"{\"key1=value1, key2={\"key1=value1, key2=value2\"}\"}"'
+-- WHERE id = 14;

migtests/tests/pg/datatypes/validate

@@ -26,6 +26,7 @@ EXPECTED_ROW_COUNT = {
 	'datetime_type2': 2, 
 	'null_and_default' :2,
 	'decimal_types': 3,
+	'hstore_example': 13,
 }
 
 EXPECTED_SUM_OF_COLUMN = {
@@ -73,7 +74,7 @@ def migration_completed_checks_fb():
 def migration_completed_checks(tgt):
 	table_list = tgt.get_table_names("public")
 	print("table_list:", table_list)
-	assert len(table_list) == 7
+	assert len(table_list) == 8
 
 	got_row_count = tgt.row_count_of_all_tables("public")
 	for table_name, row_count in EXPECTED_ROW_COUNT.items():
@@ -146,6 +147,14 @@ def migration_completed_checks(tgt):
 	tgt.assert_all_values_of_col("null_and_default", "i", "public", expected_values=[10, None])
 	tgt.assert_all_values_of_col("null_and_default", "b", "public", expected_values=[False, None])
 
+	print("hstore_example:")
+	expected_hstore_values=['"f1"=>"1", "f2"=>"{\\"key1=value1, key2=value2\\"}"', None, '"json_field"=>"{\\"key1=value1, key2={\\"key1=value1, key2=value2\\"}\\"}"', 
+	'"weight"=>"11.2 ounces", "ISBN-13"=>"978-1449370000", "language"=>"English", "paperback"=>"243", "publisher"=>"postgresqltutorial.com"', '"key1"=>"value1", "key2"=>"value2"', 
+	'"\\"{key1:value1,key2:value2}\\""=>"{\\"key1=value1, key2={\\"key1=value1, key2=value2\\"}\\"}"', '"a\\"b"=>"d\\\\\\"a"', '"{\\"key1=value1, key2=value2\\"}"=>"{\\"key1=value1, key2={\\"key1=value1, key2=value2\\"}\\"}"', 
+	'"key7"=>"value7", "key8"=>"123", "key9"=>"true"', '"\\"{\\"\\"key1\\"\\":\\"\\"value1\\"\\",\\"\\"key2\\"\\":\\"\\"value2\\"\\"}\\""=>"{\\"key1=value1, key2={\\"key1=value1, key2=value2\\"}\\"}"', '']
+	tgt.assert_distinct_values_of_col("hstore_example", "data", "public", expected_distinct_values=expected_hstore_values)
+
+
 def YB_specific_checks(tgt):
 	yb.verify_colocation(tgt, "postgresql")
 

migtests/tests/pg/datatypes/validateAfterChanges

@@ -29,6 +29,7 @@ EXPECTED_ROW_COUNT = {
 	'datetime_type2': 2, 
 	'null_and_default' :2,
 	'decimal_types': 4,
+	'hstore_example': 16,
 }
 
 EXPECTED_SUM_OF_COLUMN = {
@@ -65,6 +66,7 @@ EXPECTED_ROW_COUNT_FF = {
 	'datetime_type2': 3, 
 	'null_and_default' :2,
 	'decimal_types': 4,
+	'hstore_example': 16,
 }
 
 EXPECTED_SUM_OF_COLUMN_FF = {
@@ -128,6 +130,14 @@ def migration_completed_checks(tgt):
 	expected_distinct_values = EXPECTED_DISNTICT_VALUES['v5']
 	tgt.assert_distinct_values_of_col("datatypes2", "v5", "public", 
 		None, expected_distinct_values = expected_distinct_values)
+
+	print("hstore_example:")
+	expected_hstore_values=['"f1"=>"1", "f2"=>"{\\"key1=value1, key2=value2\\"}"', None, '"json_field"=>"{\\"key1=value1, key2={\\"key1=value1, key2=value2\\"}\\"}"', 
+	'"weight"=>"11.2 ounces", "ISBN-13"=>"978-1449370000", "language"=>"English", "paperback"=>"243", "publisher"=>"postgresqltutorial.com"', 
+	'"key1"=>"value1", "key2"=>"value2", "key3"=>"value3"', '"\\"{key1:value1,key2:value2}\\""=>"{\\"key1=value1, key2={\\"key1=value1, key2=value2\\"}\\"}"',
+	'"a\\"b"=>"d\\\\\\"a"', '"{\\"key1=value1, key2=value2\\"}"=>"{\\"key1=value1, key2={\\"key1=value1, key2=value2\\"}\\"}"', '"key5"=>"value5", "key6"=>"value6"', 
+	'"\\"{\\"\\"key1\\"\\":\\"\\"value1\\"\\",\\"\\"key2\\"\\":\\"\\"value2\\"\\"}\\""=>"{\\"key1=value1, key2={\\"key1=value1, key2=value2\\"}\\"}"', '']
+	tgt.assert_distinct_values_of_col("hstore_example", "data", "public", expected_distinct_values=expected_hstore_values)
 
 if __name__ == "__main__":
 	main()