阿里巴巴 MySQL binlog 增量订阅&消费组件
This report summarizes scanner evidence for alibaba/canal, a Java project with 29,742 GitHub stars. SynthScan examined 152,168 lines of code across 1252 source files, recording 187 pattern matches distributed across 5 syntactic categories. The legacy adjusted pattern signal is 8.0 (Moderate pattern signal); it is not an authorship estimate.
Use the findings to ask whether maintainers can explain intent, verify dependencies, simplify unnecessary scaffolding, and focus review effort. Risk Payload v1 adds ownership, supply-chain, over-engineering, and review-effort vectors when available. These are prompts for human verification, not probabilities, security findings, or measured maintenance costs.
Use each vector to guide manual verification of the underlying findings.
Can maintainers explain intent, assumptions, and trade-offs? 47 finding(s).
Are imports declared and package/API names verified? 140 finding(s).
Are wrappers, guards, and repeated structures necessary? 0 finding(s).
Which changes need focused human review? 187 finding(s).
This chart tracks the legacy adjusted pattern score across scan runs. Changes can reflect source changes, scan coverage, or detector/scoring versions; they do not measure AI adoption or prove that a team refactored code. Compare runs only when their scoring versions are compatible. The dashed line tracks the raw pattern-hit count.
Groups findings by configured severity weight. Severity is not a confidence estimate, security rating, or proof that a package is missing. Verify imports against the project's manifests and inspect each finding in its local design context.
This horizontal bar chart shows where configured pattern scores accumulate across directories. Treat the bars as locations to inspect, not as evidence of authorship or code quality. Use the file-level findings to decide whether a directory needs a focused ownership, dependency, complexity, or review check.
The scanner identified 187 distinct pattern matches across 5 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a detector match to inspect in context. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.
Reading the findings table: The Severity column indicates the configured finding weight (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — legacy comment-context matches receive a ×1.5 score weight. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier under the legacy scoring model.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| CRITICAL | …a/otter/canal/deployer/admin/CanalAdminController.java | 193 | Collection<File> files = org.apache.commons.io.FileUtils.listFiles(new File("../logs/canal/"), | CODE |
| CRITICAL | …a/otter/canal/deployer/admin/CanalAdminController.java | 210 | Collection<File> files = org.apache.commons.io.FileUtils.listFiles(new File(desPath), | CODE |
| CRITICAL | …anal/admin/handler/HandshakeInitializationHandler.java | 39 | final byte[] seed = org.apache.commons.lang3.RandomUtils.nextBytes(8); | CODE |
| CRITICAL | …rver/netty/handler/HandshakeInitializationHandler.java | 39 | final byte[] seed = org.apache.commons.lang3.RandomUtils.nextBytes(8); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 656 | // Construct using com.alibaba.otter.canal.protocol.AdminPacket.Packet.newBuilder() | COMMENT |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 1439 | // Construct using com.alibaba.otter.canal.protocol.AdminPacket.Ack.newBuilder() | COMMENT |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 2161 | // Construct using com.alibaba.otter.canal.protocol.AdminPacket.Handshake.newBuilder() | COMMENT |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 3019 | // Construct using com.alibaba.otter.canal.protocol.AdminPacket.ClientAuth.newBuilder() | COMMENT |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 3776 | // Construct using com.alibaba.otter.canal.protocol.AdminPacket.ServerAdmin.newBuilder() | COMMENT |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 4423 | // Construct using com.alibaba.otter.canal.protocol.AdminPacket.InstanceAdmin.newBuilder() | COMMENT |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 5485 | // Construct using com.alibaba.otter.canal.protocol.AdminPacket.LogAdmin.newBuilder() | COMMENT |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 142 | return com.alibaba.otter.canal.protocol.AdminPacket.getDescriptor().getEnumTypes().get(0); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 401 | com.alibaba.otter.canal.protocol.AdminPacket.PacketType result = com.alibaba.otter.canal.protocol.AdminPacket.Pack | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 436 | if (type_ != com.alibaba.otter.canal.protocol.AdminPacket.PacketType.PACKAGETYPECOMPATIBLEPROTO2.getNumber()) { | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 461 | if (type_ != com.alibaba.otter.canal.protocol.AdminPacket.PacketType.PACKAGETYPECOMPATIBLEPROTO2.getNumber()) { | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 693 | return com.alibaba.otter.canal.protocol.AdminPacket.Packet.getDefaultInstance(); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 707 | com.alibaba.otter.canal.protocol.AdminPacket.Packet result = new com.alibaba.otter.canal.protocol.AdminPacket.Pa | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 765 | if (other == com.alibaba.otter.canal.protocol.AdminPacket.Packet.getDefaultInstance()) return this; | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 929 | com.alibaba.otter.canal.protocol.AdminPacket.PacketType result = com.alibaba.otter.canal.protocol.AdminPacket.Pa | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 1001 | DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.AdminPacket.Packet(); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 1472 | return com.alibaba.otter.canal.protocol.AdminPacket.Ack.getDefaultInstance(); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 1486 | com.alibaba.otter.canal.protocol.AdminPacket.Ack result = new com.alibaba.otter.canal.protocol.AdminPacket.Ack(t | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 1539 | if (other == com.alibaba.otter.canal.protocol.AdminPacket.Ack.getDefaultInstance()) return this; | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 1734 | DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.AdminPacket.Ack(); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 2194 | return com.alibaba.otter.canal.protocol.AdminPacket.Handshake.getDefaultInstance(); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 2208 | com.alibaba.otter.canal.protocol.AdminPacket.Handshake result = new com.alibaba.otter.canal.protocol.AdminPacket | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 2261 | if (other == com.alibaba.otter.canal.protocol.AdminPacket.Handshake.getDefaultInstance()) return this; | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 2447 | DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.AdminPacket.Handshake(); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 3056 | return com.alibaba.otter.canal.protocol.AdminPacket.ClientAuth.getDefaultInstance(); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 3070 | com.alibaba.otter.canal.protocol.AdminPacket.ClientAuth result = new com.alibaba.otter.canal.protocol.AdminPacke | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 3128 | if (other == com.alibaba.otter.canal.protocol.AdminPacket.ClientAuth.getDefaultInstance()) return this; | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 3425 | DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.AdminPacket.ClientAuth(); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 3807 | return com.alibaba.otter.canal.protocol.AdminPacket.ServerAdmin.getDefaultInstance(); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 3821 | com.alibaba.otter.canal.protocol.AdminPacket.ServerAdmin result = new com.alibaba.otter.canal.protocol.AdminPack | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 3870 | if (other == com.alibaba.otter.canal.protocol.AdminPacket.ServerAdmin.getDefaultInstance()) return this; | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 4011 | DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.AdminPacket.ServerAdmin(); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 4456 | return com.alibaba.otter.canal.protocol.AdminPacket.InstanceAdmin.getDefaultInstance(); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 4470 | com.alibaba.otter.canal.protocol.AdminPacket.InstanceAdmin result = new com.alibaba.otter.canal.protocol.AdminPa | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 4520 | if (other == com.alibaba.otter.canal.protocol.AdminPacket.InstanceAdmin.getDefaultInstance()) return this; | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 4734 | DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.AdminPacket.InstanceAdmin(); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 5524 | return com.alibaba.otter.canal.protocol.AdminPacket.LogAdmin.getDefaultInstance(); | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 5538 | com.alibaba.otter.canal.protocol.AdminPacket.LogAdmin result = new com.alibaba.otter.canal.protocol.AdminPacket. | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 5600 | if (other == com.alibaba.otter.canal.protocol.AdminPacket.LogAdmin.getDefaultInstance()) return this; | CODE |
| CRITICAL | …java/com/alibaba/otter/canal/protocol/AdminPacket.java | 6092 | DEFAULT_INSTANCE = new com.alibaba.otter.canal.protocol.AdminPacket.LogAdmin(); | CODE |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 876 | // Construct using com.alibaba.otter.canal.protocol.CanalEntry.Entry.newBuilder() | COMMENT |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 2463 | // Construct using com.alibaba.otter.canal.protocol.CanalEntry.Header.newBuilder() | COMMENT |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 3637 | com.google.protobuf.AbstractMessageLite.Builder.addAll( | CODE |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 4821 | // Construct using com.alibaba.otter.canal.protocol.CanalEntry.Column.newBuilder() | COMMENT |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 5562 | com.google.protobuf.AbstractMessageLite.Builder.addAll( | CODE |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 6519 | // Construct using com.alibaba.otter.canal.protocol.CanalEntry.RowData.newBuilder() | COMMENT |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 6915 | com.google.protobuf.AbstractMessageLite.Builder.addAll( | CODE |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 7227 | com.google.protobuf.AbstractMessageLite.Builder.addAll( | CODE |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 7539 | com.google.protobuf.AbstractMessageLite.Builder.addAll( | CODE |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 8493 | // Construct using com.alibaba.otter.canal.protocol.CanalEntry.RowChange.newBuilder() | COMMENT |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 9145 | com.google.protobuf.AbstractMessageLite.Builder.addAll( | CODE |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 9457 | com.google.protobuf.AbstractMessageLite.Builder.addAll( | CODE |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 10241 | // Construct using com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin.newBuilder() | COMMENT |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 10732 | com.google.protobuf.AbstractMessageLite.Builder.addAll( | CODE |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 11411 | // Construct using com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd.newBuilder() | COMMENT |
| CRITICAL | …/java/com/alibaba/otter/canal/protocol/CanalEntry.java | 11893 | com.google.protobuf.AbstractMessageLite.Builder.addAll( | CODE |
| 79 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | …a/com/alibaba/otter/canal/deployer/CanalConstants.java | 61 | // public static final String CANAL_MQ_CANALGETTIMEOUT = ROOT + "." + "mq.canalGetTimeout"; | COMMENT |
| LOW | …com/taobao/tddl/dbsync/binlog/event/RowsLogBuffer.java | 501 | final int d = (int) (i64 / 1000000); | COMMENT |
| LOW | …com/taobao/tddl/dbsync/binlog/event/RowsLogBuffer.java | 721 | break; | COMMENT |
| LOW | …otter/canal/parse/driver/mysql/packets/Capability.java | 21 | int CLIENT_LONG_FLAG = 0x00000004; | COMMENT |
| LOW | …otter/canal/parse/driver/mysql/packets/Capability.java | 41 | int CLIENT_ODBC = 0x00000040; | COMMENT |
| LOW | …otter/canal/parse/driver/mysql/packets/Capability.java | 61 | // https://dev.mysql.com/doc/internals/en/packet-OK_Packet.html | COMMENT |
| LOW | …otter/canal/parse/driver/mysql/packets/Capability.java | 121 | // Server: Can send multiple resultsets for COM_QUERY. | COMMENT |
| LOW | …otter/canal/parse/driver/mysql/packets/Capability.java | 141 | // Server:Understands length-encoded integer for auth response data in | COMMENT |
| LOW | …/mysql/packets/client/BinlogDumpGTIDCommandPacket.java | 41 | // 3. [4] binlog-filename-len | COMMENT |
| LOW | …/canal/parse/inbound/mysql/tsdb/DatabaseTableMeta.java | 401 | // content.put("useSchema", schema); | COMMENT |
| LOW | admin/admin-ui/tests/unit/components/Breadcrumb.spec.js | 81 | // const second = breadcrumbArray.at(1) | COMMENT |
| LOW | admin/admin-ui/src/icons/svgo.yml | 1 | # replace default config | COMMENT |
| LOW | charts/canal-admin/Chart.yaml | 1 | apiVersion: v2 | COMMENT |
| LOW | charts/canal-admin/Chart.yaml | 21 | # incremented each time you make changes to the application. Versions are not expected to | COMMENT |
| LOW | charts/canal-admin/values.yaml | 41 | podSecurityContext: {} | COMMENT |
| LOW | charts/canal-server/Chart.yaml | 1 | apiVersion: v2 | COMMENT |
| LOW | charts/canal-server/Chart.yaml | 21 | # incremented each time you make changes to the application. Versions are not expected to | COMMENT |
| LOW | charts/canal-server/values.yaml | 41 | podSecurityContext: {} | COMMENT |
| LOW | charts/canal-server/values.yaml | 81 | # We usually recommend not to specify default resources and to leave this as a conscious | COMMENT |
| LOW | …a/otter/canal/server/netty/handler/SessionHandler.java | 121 | // if (get.getTimeout() == -1) {//是否是初始值 | COMMENT |
| LOW | …a/otter/canal/server/netty/handler/SessionHandler.java | 161 | // ByteBuffer byteBuffer = (ByteBuffer) | COMMENT |
| LOW | …ter/canal/server/embedded/CanalServerWithEmbedded.java | 401 | positionRanges = canalInstance.getMetaManager().removeBatch(clientIdentity, batchId); // 更新位置 | COMMENT |
| LOW | …ickhouse/src/test/resources/clickhouse/mytest_user.yml | 21 | COMMENT | |
| LOW | …ouse/src/test/resources/clickhouse/mytest_customer.yml | 21 | COMMENT | |
| LOW | …ickhouse/src/main/resources/clickhouse/mytest_user.yml | 21 | COMMENT | |
| LOW | …nt-adapter/launcher/src/main/resources/application.yml | 61 | # key: mysql1 | COMMENT |
| LOW | …nt-adapter/launcher/src/main/resources/application.yml | 81 | # jdbc.username: postgres | COMMENT |
| LOW | …nt-adapter/launcher/src/main/resources/application.yml | 101 | # - name: phoenix | COMMENT |
| LOW | client-adapter/es7x/src/main/resources/es7/customer.yml | 21 | # }, | COMMENT |
| LOW | client-adapter/es7x/src/main/resources/es7/customer.yml | 41 | # } | COMMENT |
| LOW | …libaba/otter/canal/client/adapter/rdb/test/DBTest.java | 61 | COMMENT | |
| LOW | …otter/canal/client/adapter/rdb/test/SqlParserTest.java | 1 | //wpackage com.alibaba.otter.canal.client.adapter.rdb.test; | COMMENT |
| LOW | …otter/canal/client/adapter/rdb/test/SqlParserTest.java | 21 | // } | COMMENT |
| LOW | …otter/canal/client/adapter/rdb/test/SqlParserTest.java | 41 | // + " `name` varchar(30) NOT NULL,\n" + " `c_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,\n | COMMENT |
| LOW | …otter/canal/client/adapter/rdb/test/SqlParserTest.java | 61 | // // // 使用select访问者进行select的关键信息打印 | COMMENT |
| LOW | …otter/canal/client/adapter/rdb/test/SqlParserTest.java | 81 | // StringWriter out = new StringWriter(); | COMMENT |
| LOW | …ent-adapter/rdb/src/main/resources/rdb/mytest_user.yml | 21 | COMMENT | |
| LOW | …otter/canal/client/adapter/es6x/test/SqlParseTest.java | 41 | COMMENT | |
| LOW | client-adapter/es6x/src/main/resources/es6/customer.yml | 21 | # "type": "long" | COMMENT |
| LOW | client-adapter/es6x/src/main/resources/es6/customer.yml | 41 | # "customer":"order" | COMMENT |
| LOW | …pter/hbase/src/main/resources/hbase/mytest_person2.yml | 21 | birthday: BIRTHDAY | COMMENT |
| LOW | …pter/hbase/src/main/resources/hbase/mytest_person2.yml | 41 | # $UNSIGNED_INT 对应PHOENIX里的UNSIGNED_INT 4字节 | COMMENT |
| LOW | …pter/hbase/src/main/resources/hbase/mytest_person2.yml | 61 | # $VARBINARY 对应PHOENIX里的VARBINARY 动态长度 | COMMENT |
| LOW | client-adapter/es8x/src/main/resources/es8/customer.yml | 21 | # }, | COMMENT |
| LOW | client-adapter/es8x/src/main/resources/es8/customer.yml | 41 | # } | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | …com/taobao/tddl/dbsync/binlog/event/QueryLogEvent.java | 252 | * When adding new status vars, please don't forget to update the | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | …com/taobao/tddl/dbsync/binlog/event/QueryLogEvent.java | 556 | * This variable stores the default collation for the utf8mb4 character set. | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | …main/resources/public/static/js/chunk-libs.c04beefc.js | 18 | var n=Object.freeze({});function r(t){return void 0===t||null===t}function o(t){return void 0!==t&&null!==t}function i(t | CODE |