fix(connector): fix gcs source connector

ci/scripts/notify.py

@@ -98,6 +98,7 @@ def get_mock_test_status(test):
         "e2e-clickhouse-sink-tests": "hard_failed",
         "e2e-pulsar-sink-tests": "",
         "s3-source-test-for-opendal-fs-engine": "",
+        "s3-source-tests": "",
         "pulsar-source-tests": "",
         "connector-node-integration-test": ""
     }

ci/scripts/s3-source-test-for-opendal-fs-engine.sh

@@ -30,7 +30,7 @@ cargo make ci-start ci-3cn-3fe-opendal-fs-backend
 
 echo "--- Run test"
 python3 -m pip install minio psycopg2-binary
-python3 e2e_test/s3/$script.py
+python3 e2e_test/s3/$script
 
 echo "--- Kill cluster"
 rm -rf /tmp/rw_ci

ci/workflows/main-cron.yml

@@ -490,6 +490,7 @@ steps:
     retry: *auto-retry
 
   - label: "PosixFs source on OpenDAL fs engine (csv parser)"
+    key: "s3-source-test-for-opendal-fs-engine"
     command: "ci/scripts/s3-source-test.sh -p ci-release -s 'posix_fs_source.py csv_without_header'"
     if: |
       !(build.pull_request.labels includes "ci/main-cron/skip-ci") && build.env("CI_STEPS") == null
@@ -507,7 +508,7 @@ steps:
 
   - label: "S3 source on OpenDAL fs engine"
     key: "s3-source-test-for-opendal-fs-engine"
-    command: "ci/scripts/s3-source-test-for-opendal-fs-engine.sh -p ci-release -s run"
+    command: "ci/scripts/s3-source-test-for-opendal-fs-engine.sh -p ci-release -s run.csv"
     if: |
       !(build.pull_request.labels includes "ci/main-cron/skip-ci") && build.env("CI_STEPS") == null
       || build.pull_request.labels includes "ci/run-s3-source-tests"
@@ -527,6 +528,29 @@ steps:
     timeout_in_minutes: 20
     retry: *auto-retry
 
+  # TODO(Kexiang): Enable this test after we have a GCS_SOURCE_TEST_CONF.
+  # - label: "GCS source on OpenDAL fs engine"
+  #   key: "s3-source-test-for-opendal-fs-engine"
+  #   command: "ci/scripts/s3-source-test-for-opendal-fs-engine.sh -p ci-release -s gcs.csv"
+  #   if: |
+  #     !(build.pull_request.labels includes "ci/main-cron/skip-ci") && build.env("CI_STEPS") == null
+  #     || build.pull_request.labels includes "ci/run-s3-source-tests"
+  #     || build.env("CI_STEPS") =~ /(^|,)s3-source-tests?(,|$$)/
+  #   depends_on: build
+  #   plugins:
+  #     - seek-oss/aws-sm#v2.3.1:
+  #         env:
+  #           S3_SOURCE_TEST_CONF: ci_s3_source_test_aws
+  #     - docker-compose#v4.9.0:
+  #         run: rw-build-env
+  #         config: ci/docker-compose.yml
+  #         mount-buildkite-agent: true
+  #         environment:
+  #           - S3_SOURCE_TEST_CONF
+  #     - ./ci/plugins/upload-failure-logs
+  #   timeout_in_minutes: 20
+  #   retry: *auto-retry
+
   - label: "pulsar source check"
     key: "pulsar-source-tests"
     command: "ci/scripts/pulsar-source-test.sh -p ci-release"

e2e_test/s3/gcs_source.py

@@ -57,7 +57,7 @@ def _encode():
         connector = 'gcs',
         match_pattern = '{prefix}*.{fmt}',
         gcs.bucket_name = '{config['GCS_BUCKET']}',
-        gcs.credentials = '{credential}',
+        gcs.credential = '{credential}',
     ) FORMAT PLAIN ENCODE {_encode()};''')
 
     total_rows = file_num * item_num_per_file

src/connector/src/source/base.rs

@@ -42,7 +42,7 @@ use super::google_pubsub::GooglePubsubMeta;
 use super::kafka::KafkaMeta;
 use super::monitor::SourceMetrics;
 use super::nexmark::source::message::NexmarkMeta;
-use super::{OPENDAL_S3_CONNECTOR, POSIX_FS_CONNECTOR};
+use super::{GCS_CONNECTOR, OPENDAL_S3_CONNECTOR, POSIX_FS_CONNECTOR};
 use crate::parser::ParserConfig;
 pub(crate) use crate::source::common::CommonSplitReader;
 use crate::source::filesystem::FsPageItem;
@@ -389,6 +389,7 @@ impl ConnectorProperties {
             .map(|s| {
                 s.eq_ignore_ascii_case(OPENDAL_S3_CONNECTOR)
                     || s.eq_ignore_ascii_case(POSIX_FS_CONNECTOR)
+                    || s.eq_ignore_ascii_case(GCS_CONNECTOR)
             })
             .unwrap_or(false)
     }
@@ -399,6 +400,7 @@ impl ConnectorProperties {
             .map(|s| {
                 s.eq_ignore_ascii_case(OPENDAL_S3_CONNECTOR)
                     || s.eq_ignore_ascii_case(POSIX_FS_CONNECTOR)
+                    || s.eq_ignore_ascii_case(GCS_CONNECTOR)
             })
             .unwrap_or(false)
     }

src/connector/src/source/filesystem/opendal_source/gcs_source.rs

@@ -32,9 +32,13 @@ impl<Src: OpendalSource> OpendalEnumerator<Src> {
         builder.bucket(&gcs_properties.bucket_name);
 
         // if credential env is set, use it. Otherwise, ADC will be used.
-        let cred = gcs_properties.credential;
-        if let Some(cred) = cred {
+        if let Some(cred) = gcs_properties.credential {
             builder.credential(&cred);
+        } else {
+            let cred = std::env::var("GOOGLE_APPLICATION_CREDENTIALS");
+            if let Ok(cred) = cred {
+                builder.credential(&cred);
+            }
         }
 
         if let Some(service_account) = gcs_properties.service_account {

src/connector/src/source/filesystem/opendal_source/mod.rs

@@ -38,10 +38,15 @@ pub const POSIX_FS_CONNECTOR: &str = "posix_fs";
 pub struct GcsProperties {
     #[serde(rename = "gcs.bucket_name")]
     pub bucket_name: String,
+
+    /// The base64 encoded credential key. If not set, ADC will be used.
     #[serde(rename = "gcs.credential")]
     pub credential: Option<String>,
+
+    /// If credential/ADC is not set. The service account can be used to provide the credential info.
     #[serde(rename = "gcs.service_account", default)]
     pub service_account: Option<String>,
+
     #[serde(rename = "match_pattern", default)]
     pub match_pattern: Option<String>,
 
@@ -107,7 +112,7 @@ pub struct OpendalS3Properties {
     #[serde(flatten)]
     pub s3_properties: S3PropertiesCommon,
 
-    // The following are only supported by s3_v2 (opendal) source.
+    /// The following are only supported by s3_v2 (opendal) source.
     #[serde(rename = "s3.assume_role", default)]
     pub assume_role: Option<String>,
 
@@ -131,11 +136,11 @@ impl SourceProperties for OpendalS3Properties {
 
 #[derive(Clone, Debug, Deserialize, PartialEq, WithOptions)]
 pub struct PosixFsProperties {
-    // The root directly of the files to search. The files will be searched recursively.
+    /// The root directly of the files to search. The files will be searched recursively.
     #[serde(rename = "posix_fs.root")]
     pub root: String,
 
-    // The regex pattern to match files under root directory.
+    /// The regex pattern to match files under root directory.
     #[serde(rename = "match_pattern", default)]
     pub match_pattern: Option<String>,
 

src/connector/with_options_source.yaml

@@ -22,9 +22,11 @@ GcsProperties:
     required: true
   - name: gcs.credential
     field_type: String
+    comments: The base64 encoded credential key. If not set, ADC will be used.
     required: false
   - name: gcs.service_account
     field_type: String
+    comments: If credential/ADC is not set. The service account can be used to provide the credential info.
     required: false
     default: Default::default
   - name: match_pattern
@@ -453,15 +455,18 @@ OpendalS3Properties:
     required: false
   - name: s3.assume_role
     field_type: String
+    comments: The following are only supported by s3_v2 (opendal) source.
     required: false
     default: Default::default
 PosixFsProperties:
   fields:
   - name: posix_fs.root
     field_type: String
+    comments: The root directly of the files to search. The files will be searched recursively.
     required: true
   - name: match_pattern
     field_type: String
+    comments: The regex pattern to match files under root directory.
     required: false
     default: Default::default
 PubsubProperties: