Fix integration tests and docs

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Install minimal nightly with clippy and rustfmt
         uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: nightly
+          toolchain: nightly-2025-01-23
           components: rustfmt, clippy
 
       - name: Install tool for formatting Cargo.toml files

README.md

@@ -11,17 +11,30 @@ Load data from Parquet and Postgres to Delta Lake
 
 Download the binary from the [Releases page](./releases)
 
-To load data from Postgres to Delta Lake:
+Load data from Postgres to Delta Lake:
 
 ```bash
 export PGPASSWORD="my_password"
-./lakehouse-loader pg-to-delta postgres://test-user@localhost:5432/test-db -q "SELECT * FROM some_table" s3://my-bucket/path/to/table
+./lakehouse-loader pg-to-delta postgres://test-user@localhost:5432/test-db -q "SELECT * FROM some_table" s3://my-bucket/path/to/delta/table
 ```
 
-To load data from Parquet to Delta Lake:
+Load data from Parquet to Delta Lake:
 
 ```bash
-./lakehouse-loader parquet-to-delta some_file.parquet s3://my-bucket/path/to/table
+./lakehouse-loader parquet-to-delta some_file.parquet s3://my-bucket/path/to/delta/table
+```
+
+Load data from Postgres to Iceberg File Catalog:
+
+```bash
+export PGPASSWORD="my_password"
+./lakehouse-loader pg-to-iceberg postgres://test-user@localhost:5432/test-db -q "SELECT * FROM some_table" s3://my-bucket/path/to/iceberg/table
+```
+
+Load data from Parquet to Iceberg File Catalog:
+
+```bash
+./lakehouse-loader parquet-to-iceberg some_file.parquet s3://my-bucket/path/to/iceberg/table
 ```
 
 Supports standard AWS environment variables (e.g. AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_PROFILE, AWS_ENDPOINT etc).

docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   postgres:
-    image: postgres:16
+    image: postgres:16.9
     environment:
       POSTGRES_USER: test-user
       POSTGRES_PASSWORD: test-password
@@ -12,7 +12,7 @@ services:
       - ./tests/postgres-init-scripts:/docker-entrypoint-initdb.d
 
   minio:
-    image: minio/minio:latest
+    image: quay.io/minio/minio:RELEASE.2024-11-07T00-52-20Z
     ports:
       - 9000:9000
       - 9001:9001
@@ -21,14 +21,20 @@ services:
     command: minio server /data
 
   minio-setup:
-    image: minio/mc:latest
+    image: minio/mc:RELEASE.2025-03-12T17-29-24Z
     depends_on:
       - minio
     entrypoint: >
-      /bin/sh -c "
-      until (/usr/bin/mc config host add test-minio http://minio:9000 minioadmin minioadmin) do echo '...waiting...' && sleep 1; done;
+      /bin/sh -c '
+      mkdir ~/.mc;
+      echo ''{\"version\": \"10\", \"aliases\": {\"test-minio\": {\"url\": \"http://minio:9000\", \"accessKey\": \"minioadmin\", \"secretKey\": \"minioadmin\", \"api\": \"S3v4\", \"path\": \"auto\"}}}'' > ~/.mc/config.json;
+      cat ~/.mc/config.json;
       /usr/bin/mc rm -r --force test-minio/lhl-test-bucket;
       /usr/bin/mc mb test-minio/lhl-test-bucket;
       /usr/bin/mc admin user add test-minio test-user test-pass;
       /usr/bin/mc admin policy attach test-minio readwrite --user test-user;
-      exit 0; "
+      exit 0; '
+    healthcheck:
+      test: ["CMD", "false"] # Stack is not ready while the minio-setup container is up
+      interval: 10s
+      timeout: 5s

src/delta_destination.rs

@@ -441,7 +441,7 @@ pub async fn record_batches_to_delta(
     .await?;
 
     let delta_schema = deltalake::kernel::Schema::try_from(schema)?;
-    let table_name = target_url.path_segments().unwrap().last().unwrap();
+    let table_name = target_url.path_segments().unwrap().next_back().unwrap();
 
     let table = CreateBuilder::new()
         .with_log_store(log_store.clone())