Move var from rag.settings to common.globals (#11022)

### What problem does this PR solve?

As title.

### Type of change

- [x] Refactoring

---------

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

common/globals.py

@@ -13,13 +13,52 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 #
+import os
+from common.config_utils import get_base_config, decrypt_database_config
 
 EMBEDDING_MDL = ""
 
 EMBEDDING_CFG = ""
 
-DOC_ENGINE = None
+DOC_ENGINE = os.getenv('DOC_ENGINE', 'elasticsearch')
 
 docStoreConn = None
 
-retriever = None
+retriever = None
+
+# move from rag.settings
+ES = {}
+INFINITY = {}
+AZURE = {}
+S3 = {}
+MINIO = {}
+OSS = {}
+OS = {}
+REDIS = {}
+
+STORAGE_IMPL_TYPE = os.getenv('STORAGE_IMPL', 'MINIO')
+
+# Initialize the selected configuration data based on environment variables to solve the problem of initialization errors due to lack of configuration
+if DOC_ENGINE == 'elasticsearch':
+    ES = get_base_config("es", {})
+elif DOC_ENGINE == 'opensearch':
+    OS = get_base_config("os", {})
+elif DOC_ENGINE == 'infinity':
+    INFINITY = get_base_config("infinity", {"uri": "infinity:23817"})
+
+if STORAGE_IMPL_TYPE in ['AZURE_SPN', 'AZURE_SAS']:
+    AZURE = get_base_config("azure", {})
+elif STORAGE_IMPL_TYPE == 'AWS_S3':
+    S3 = get_base_config("s3", {})
+elif STORAGE_IMPL_TYPE == 'MINIO':
+    MINIO = decrypt_database_config(name="minio")
+elif STORAGE_IMPL_TYPE == 'OSS':
+    OSS = get_base_config("oss", {})
+
+try:
+    REDIS = decrypt_database_config(name="redis")
+except Exception:
+    try:
+        REDIS = get_base_config("redis", {})
+    except Exception:
+        REDIS = {}