Allow pre-release

start_server.sh

@@ -53,7 +53,7 @@ function install_vastai_sdk() {
             echo "WARNING: Both SDK_BRANCH and SDK_VERSION are set; using SDK_BRANCH=${SDK_BRANCH}"
         fi
         echo "Installing vastai-sdk from https://github.com/vast-ai/vast-sdk/ @ ${SDK_BRANCH}"
-        if ! uv pip install "vastai-sdk @ git+https://github.com/vast-ai/vast-sdk.git@${SDK_BRANCH}"; then
+        if ! uv pip install --prerelease=allow "vastai-sdk @ git+https://github.com/vast-ai/vast-sdk.git@${SDK_BRANCH}"; then
             report_error_and_exit "Failed to install vastai-sdk from vast-ai/vast-sdk@${SDK_BRANCH}"
         fi
         return 0
@@ -61,14 +61,14 @@ function install_vastai_sdk() {
 
     if [ -n "${SDK_VERSION:-}" ]; then
         echo "Installing vastai-sdk version ${SDK_VERSION}"
-        if ! uv pip install "vastai-sdk==${SDK_VERSION}"; then
+        if ! uv pip install --prerelease=allow "vastai-sdk==${SDK_VERSION}"; then
             report_error_and_exit "Failed to install vastai-sdk==${SDK_VERSION}"
         fi
         return 0
     fi
 
     echo "Installing default vastai-sdk"
-    if ! uv pip install vastai-sdk; then
+    if ! uv pip install --prerelease=allow vastai-sdk; then
         report_error_and_exit "Failed to install vastai-sdk"
     fi
 }
@@ -222,18 +222,44 @@ if [ "$IS_DEPLOYMENT" = "true" ]; then
     DEPLOY_DIR="/workspace/deployment"
     mkdir -p "$DEPLOY_DIR"
 
-    # Download deployment code via instance API key
+    VAST_API_BASE="${VAST_API_BASE:-https://console.vast.ai}"
+
+    # Download deployment code, retrying until the blob is available on S3.
+    # The s3_key exists in the DB as soon as the deployment is created, but the
+    # actual upload may still be in flight from the client side.
     echo "Downloading deployment code..."
+    RETRY=0
+    while true; do
         DOWNLOAD_RESPONSE=$(curl -sS \
             -H "Authorization: Bearer $CONTAINER_API_KEY" \
-        "https://console.vast.ai/api/v0/deployment/${DEPLOYMENT_ID}/download_url/")
-    DOWNLOAD_URL=$(python3 -c "import sys,json; print(json.load(sys.stdin)['download_url'])" <<< "$DOWNLOAD_RESPONSE")
+            "${VAST_API_BASE}/api/v0/deployment/${DEPLOYMENT_ID}/download_url/")
+        DOWNLOAD_URL=$(python3 -c "
+import sys, json
+try:
+    d = json.load(sys.stdin)
+    print(d.get('download_url') or '')
+except: print('')
+" <<< "$DOWNLOAD_RESPONSE")
 
         if [ -z "$DOWNLOAD_URL" ] || [ "$DOWNLOAD_URL" = "None" ]; then
-        report_error_and_exit "Failed to get deployment download URL"
+            RETRY=$((RETRY + 1))
+            echo "No download URL yet (attempt $RETRY), retrying in 10s... response: $DOWNLOAD_RESPONSE"
+            sleep 10
+            continue
         fi
 
-    curl -sS -L "$DOWNLOAD_URL" -o "$DEPLOY_DIR/deployment.tar.gz"
+        # Got a URL — try the actual S3 download
+        HTTP_CODE=$(curl -sS -L -o "$DEPLOY_DIR/deployment.tar.gz" -w "%{http_code}" "$DOWNLOAD_URL")
+        if [ "$HTTP_CODE" = "200" ]; then
+            break
+        fi
+
+        RETRY=$((RETRY + 1))
+        echo "S3 download returned HTTP $HTTP_CODE (attempt $RETRY), blob not yet uploaded. Retrying in 10s..."
+        rm -f "$DEPLOY_DIR/deployment.tar.gz"
+        sleep 10
+    done
+
     cd "$DEPLOY_DIR" && tar xzf deployment.tar.gz
     echo "Deployment code extracted."