Add Redshift support for credentials and column retrieval

api/src/utils/query_engine/credentials.rs

@@ -82,7 +82,6 @@ pub struct PostgresCredentials {
     pub ssh_private_key: Option<String>,
 }
 
-// Deprecated: REDSHIFT just uses postgres credentials
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct RedshiftCredentials {
     pub host: String,
@@ -222,7 +221,16 @@ pub async fn get_data_source_credentials(
                     if redact_secret {
                         credential.password = "[REDACTED]".to_string();
                     }
-                    Credential::Postgres(credential)
+                    // Convert PostgresCredentials to RedshiftCredentials
+                    let redshift_creds = RedshiftCredentials {
+                        host: credential.host,
+                        port: credential.port,
+                        username: credential.username,
+                        password: credential.password,
+                        database: Some(credential.database),
+                        schemas: credential.schema.map(|s| vec![s]),
+                    };
+                    Credential::Redshift(redshift_creds)
                 }
                 Err(e) => {
                     tracing::error!("Error deserializing Redshift secret: {:?}, raw secret: {}", e, secret_string);

api/src/utils/query_engine/import_dataset_columns.rs

@@ -3,12 +3,13 @@ use crate::database::{lib::get_pg_pool, models::DatasetColumn, schema::dataset_c
 use super::{
     credentials::{
         BigqueryCredentials, Credential, MySqlCredentials, PostgresCredentials,
-        SnowflakeCredentials,
+        SnowflakeCredentials, RedshiftCredentials,
     },
     data_source_connections::{
         get_bigquery_client::get_bigquery_client, get_mysql_connection::get_mysql_connection,
         get_postgres_connection::get_postgres_connection,
         get_snowflake_client::get_snowflake_client,
+        get_redshift_connection::get_redshift_connection,
     },
 };
 use anyhow::{anyhow, Result};
@@ -191,6 +192,17 @@ pub async fn retrieve_dataset_columns(
                 Err(e) => return Err(e),
             }
         }
+        Credential::Redshift(credentials) => {
+            match get_redshift_columns_batch(
+                &[(dataset_name.clone(), schema_name.clone())],
+                credentials,
+            )
+            .await
+            {
+                Ok(cols) => cols,
+                Err(e) => return Err(e),
+            }
+        }
         _ => return Err(anyhow!("Unsupported data source type")),
     };
 
@@ -213,6 +225,9 @@ pub async fn retrieve_dataset_columns_batch(
         Credential::Snowflake(credentials) => {
             get_snowflake_columns_batch(datasets, credentials, database).await
         }
+        Credential::Redshift(credentials) => {
+            get_redshift_columns_batch(datasets, credentials).await
+        }
         _ => Err(anyhow!("Unsupported data source type")),
     }
 }
@@ -458,6 +473,69 @@ async fn get_postgres_columns_batch(
     Ok(columns)
 }
 
+async fn get_redshift_columns_batch(
+    datasets: &[(String, String)],
+    credentials: &RedshiftCredentials,
+) -> Result<Vec<DatasetColumnRecord>> {
+    // Convert RedshiftCredentials to PostgresCredentials for the connection
+    let pg_credentials = PostgresCredentials {
+        host: credentials.host.clone(),
+        port: credentials.port,
+        username: credentials.username.clone(),
+        password: credentials.password.clone(),
+        database: credentials.database.clone().unwrap_or_default(),
+        schema: None,
+        jump_host: None,
+        ssh_username: None,
+        ssh_private_key: None,
+    };
+
+    let redshift_pool = match get_redshift_connection(&pg_credentials).await {
+        Ok(conn) => conn,
+        Err(e) => return Err(e),
+    };
+
+    // Build the IN clause for (schema, table) pairs
+    let table_pairs: Vec<String> = datasets
+        .iter()
+        .map(|(table, schema)| format!("('{schema}', '{table}')"))
+        .collect();
+    let table_pairs_str = table_pairs.join(", ");
+
+    // Query for tables and views in Redshift
+    // Note: Redshift doesn't support pg_catalog.pg_statio_all_tables and pg_catalog.pg_description
+    // the same way PostgreSQL does, so we simplify the query
+    let sql = format!(
+        "SELECT
+            c.table_name as dataset_name,
+            c.table_schema as schema_name,
+            c.column_name as name,
+            c.data_type as type_,
+            CASE WHEN c.is_nullable = 'YES' THEN true ELSE false END as nullable,
+            NULL AS comment,
+            t.table_type as source_type
+        FROM
+            information_schema.columns c
+        JOIN
+            information_schema.tables t ON c.table_name = t.table_name AND c.table_schema = t.table_schema
+        WHERE
+            (c.table_schema, c.table_name) IN ({})
+            AND t.table_type IN ('BASE TABLE', 'VIEW', 'MATERIALIZED VIEW')
+        ORDER BY
+            c.table_schema,
+            c.table_name,
+            c.ordinal_position;",
+        table_pairs_str
+    );
+
+    let columns = sqlx::query_as::<_, DatasetColumnRecord>(&sql)
+        .fetch_all(&redshift_pool)
+        .await
+        .map_err(|e| anyhow!("Error fetching columns from Redshift: {:?}", e))?;
+
+    Ok(columns)
+}
+
 async fn get_mysql_columns_batch(
     datasets: &[(String, String)],
     credentials: &MySqlCredentials,
@@ -648,6 +726,7 @@ async fn get_bigquery_columns_batch(
 
     Ok(columns)
 }
+
 async fn get_snowflake_columns(
     dataset_name: &String,
     schema_name: &String,

cli/buster_project.yml

@@ -1,19 +0,0 @@
-name: hello_blake
-version: 1.0.0
-profile: hello_blake
-model-paths:
-- models
-analysis-paths:
-- analyses
-test-paths:
-- tests
-seed-paths:
-- seeds
-macro-paths:
-- macros
-snapshot-paths:
-- snapshots
-clean-targets:
-- target
-- dbt_packages
-models: {}

cli/src/commands/init.rs

@@ -185,8 +185,19 @@ async fn setup_redshift(buster_url: String, buster_api_key: String) -> Result<()
     println!("Port: {}", port.to_string().cyan());
     println!("Username: {}", username.cyan());
     println!("Password: {}", "********".cyan());
-    println!("Database: {}", database.clone().unwrap_or_else(|| "All databases".to_string()).cyan());
-    println!("Schema: {}", schema.clone().unwrap_or_else(|| "All schemas".to_string()).cyan());
+    
+    // Display database and schema with clear indication if they're empty
+    if let Some(db) = &database {
+        println!("Database: {}", db.cyan());
+    } else {
+        println!("Database: {}", "All databases (null)".cyan());
+    }
+    
+    if let Some(sch) = &schema {
+        println!("Schema: {}", sch.cyan());
+    } else {
+        println!("Schema: {}", "All schemas (null)".cyan());
+    }
 
     let confirm = Confirm::new("Do you want to create this data source?")
         .with_default(true)
@@ -208,6 +219,8 @@ async fn setup_redshift(buster_url: String, buster_api_key: String) -> Result<()
     };
 
     // Create API request
+    // Note: PostgresCredentials requires String for database and schema, not Option<String>
+    // We use empty strings to represent null/all databases or schemas
     let request = PostDataSourcesRequest {
         name: name.clone(),
         env: "dev".to_string(), // Default to dev environment