pin version

requirements.txt

@@ -1 +1,2 @@
 vastai-sdk>=0.3.0
+nltk==3.9.4 

start_server.sh

@@ -2,10 +2,17 @@
 
 set -e -o pipefail
 
+# Check for force update flag
+FORCE_UPDATE=false
+if [ -f "/.force_update" ]; then
+    echo "Force update flag detected at /.force_update"
+    FORCE_UPDATE=true
+fi
+
 WORKSPACE_DIR="${WORKSPACE_DIR:-/workspace}"
 
 SERVER_DIR="$WORKSPACE_DIR/vast-pyworker"
-ENV_PATH="$WORKSPACE_DIR/worker-env"
+ENV_PATH="${ENV_PATH:-$WORKSPACE_DIR/worker-env}"
 DEBUG_LOG="$WORKSPACE_DIR/debug.log"
 PYWORKER_LOG="$WORKSPACE_DIR/pyworker.log"
 
@@ -47,13 +54,22 @@ JSON
 }
 
 function install_vastai_sdk() {
+    local uv_flags=()
+    if [ "${USE_SYSTEM_PYTHON:-}" = "true" ]; then
+        uv_flags+=(--system --break-system-packages)
+    fi
+    if [ "$FORCE_UPDATE" = true ]; then
+        uv_flags+=(--force-reinstall)
+        echo "Force reinstalling vastai-sdk"
+    fi
+
     # If SDK_BRANCH is set, install vastai-sdk from the vast-sdk repo at that branch/tag/commit.
     if [ -n "${SDK_BRANCH:-}" ]; then
         if [ -n "${SDK_VERSION:-}" ]; then
             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 "${uv_flags[@]}" "vastai-sdk @ git+https://github.com/vast-ai/vast-sdk.git@${SDK_BRANCH}"; then
             report_error_and_exit "Failed to install vastai-sdk from vast-ai/vast-sdk@${SDK_BRANCH}"
         fi
         return 0
@@ -61,14 +77,14 @@ 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 "${uv_flags[@]}" "vastai-sdk==${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 "${uv_flags[@]}" vastai-sdk; then
         report_error_and_exit "Failed to install vastai-sdk"
     fi
 }
@@ -112,8 +128,21 @@ if ! grep -q "VAST" /etc/environment; then
     fi
 fi
 
-if [ ! -d "$ENV_PATH" ]
-then
+if [ "${USE_SYSTEM_PYTHON:-}" = "true" ]; then
+    echo "Using system Python: $(which python3)"
+    if ! which uv > /dev/null 2>&1; then
+        if ! curl -LsSf https://astral.sh/uv/install.sh | sh; then
+            report_error_and_exit "Failed to install uv package manager"
+        fi
+        if [[ -f ~/.local/bin/env ]]; then
+            if ! source ~/.local/bin/env; then
+                report_error_and_exit "Failed to source uv environment"
+            fi
+        fi
+    fi
+    install_vastai_sdk
+    touch ~/.no_auto_tmux
+elif [ ! -d "$ENV_PATH" ]; then
     echo "setting up venv"
     if ! which uv; then
         if ! curl -LsSf https://astral.sh/uv/install.sh | sh; then
@@ -132,10 +161,27 @@ then
         if ! git clone "${PYWORKER_REPO:-https://github.com/vast-ai/pyworker}" "$SERVER_DIR"; then
             report_error_and_exit "Failed to clone pyworker repository"
         fi
+    elif [ "$FORCE_UPDATE" = true ]; then
+        echo "Force updating pyworker repository"
+        if ! (cd "$SERVER_DIR" && git fetch --all); then
+            report_error_and_exit "Failed to fetch pyworker repository updates"
+        fi
     fi
     if [[ -n ${PYWORKER_REF:-} ]]; then
-        if ! (cd "$SERVER_DIR" && git checkout "$PYWORKER_REF"); then
-            report_error_and_exit "Failed to checkout pyworker reference: $PYWORKER_REF"
+        if [ "$FORCE_UPDATE" = true ]; then
+            echo "Force updating to pyworker reference: $PYWORKER_REF"
+            if ! (cd "$SERVER_DIR" && git checkout "$PYWORKER_REF" && git pull); then
+                report_error_and_exit "Failed to force update pyworker reference: $PYWORKER_REF"
+            fi
+        else
+            if ! (cd "$SERVER_DIR" && git checkout "$PYWORKER_REF"); then
+                report_error_and_exit "Failed to checkout pyworker reference: $PYWORKER_REF"
+            fi
+        fi
+    elif [ "$FORCE_UPDATE" = true ]; then
+        echo "Force updating pyworker to latest"
+        if ! (cd "$SERVER_DIR" && git pull); then
+            report_error_and_exit "Failed to pull latest pyworker changes"
         fi
     fi
 
@@ -162,11 +208,44 @@ else
             report_error_and_exit "Failed to source uv environment"
         fi
     fi
-    if ! source "$WORKSPACE_DIR/worker-env/bin/activate"; then
+    if ! source "$ENV_PATH/bin/activate"; then
         report_error_and_exit "Failed to activate existing virtual environment"
     fi
     echo "environment activated"
     echo "venv: $VIRTUAL_ENV"
+
+    # Handle force update for existing environment
+    if [ "$FORCE_UPDATE" = true ]; then
+        echo "Performing force update on existing environment"
+
+        if [[ -d $SERVER_DIR ]]; then
+            echo "Force updating pyworker repository"
+            if ! (cd "$SERVER_DIR" && git fetch --all); then
+                report_error_and_exit "Failed to fetch pyworker repository updates"
+            fi
+
+            if [[ -n ${PYWORKER_REF:-} ]]; then
+                echo "Force updating to pyworker reference: $PYWORKER_REF"
+                if ! (cd "$SERVER_DIR" && git checkout "$PYWORKER_REF" && git pull); then
+                    report_error_and_exit "Failed to force update pyworker reference: $PYWORKER_REF"
+                fi
+            else
+                echo "Force updating pyworker to latest"
+                if ! (cd "$SERVER_DIR" && git pull); then
+                    report_error_and_exit "Failed to pull latest pyworker changes"
+                fi
+            fi
+        fi
+
+        install_vastai_sdk
+    fi
+fi
+
+# Remove force update flag after successful update
+if [ "$FORCE_UPDATE" = true ]; then
+    echo "Removing force update flag"
+    rm -f "/.force_update"
+    echo "Force update completed successfully"
 fi
 
 if [ "$USE_SSL" = true ]; then
@@ -204,12 +283,23 @@ EOF
         report_error_and_exit "Failed to generate SSL certificate request"
     fi
 
-    if ! curl --header 'Content-Type: application/octet-stream' \
-        --data-binary @/etc/instance.csr \
-        -X \
-        POST "https://console.vast.ai/api/v0/sign_cert/?instance_id=$CONTAINER_ID" > /etc/instance.crt; then
-        report_error_and_exit "Failed to sign SSL certificate"
-    fi
+    max_retries=5
+    retry_delay=2
+    for attempt in $(seq 1 "$max_retries"); do
+        http_code=$(curl -sS -o /etc/instance.crt -w '%{http_code}' \
+            --header 'Content-Type: application/octet-stream' \
+            --data-binary @/etc/instance.csr \
+            -X POST "https://console.vast.ai/api/v0/sign_cert/?instance_id=$CONTAINER_ID")
+        if [ "$http_code" -ge 200 ] && [ "$http_code" -lt 300 ]; then
+            break
+        fi
+        echo "SSL cert signing attempt $attempt/$max_retries failed (HTTP $http_code)"
+        if [ "$attempt" -eq "$max_retries" ]; then
+            report_error_and_exit "Failed to sign SSL certificate after $max_retries attempts (HTTP $http_code)"
+        fi
+        sleep "$retry_delay"
+        retry_delay=$((retry_delay * 2))
+    done
 fi
 
 export REPORT_ADDR WORKER_PORT USE_SSL UNSECURED
@@ -227,63 +317,13 @@ if [ "$IS_DEPLOYMENT" = "true" ]; then
     # Download deployment code, retrying until the blob is available on S3.
     # The s3_key exists in the DB as soon as the deployment is created, but the
     # actual upload may still be in flight from the client side.
-    echo "Downloading deployment code..."
-    RETRY=0
-    while true; do
-        DOWNLOAD_RESPONSE=$(curl -sS \
-            -H "Authorization: Bearer $CONTAINER_API_KEY" \
-            "${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" ] || [ "$DOWNLOAD_URL" = "None" ]; then
-            RETRY=$((RETRY + 1))
-            echo "No download URL yet (attempt $RETRY), retrying in 10s... response: $DOWNLOAD_RESPONSE"
-            sleep 10
-            continue
-        fi
-
-        # Got a URL — try the actual S3 download
-        HTTP_CODE=$(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 "$DEPLOY_DIR" && tar xzf deployment.tar.gz
-    echo "Deployment code extracted."
-
-    # Source secrets if present
-    if [ -f "$DEPLOY_DIR/.secrets" ]; then
-        echo "Sourcing secrets..."
-        source "$DEPLOY_DIR/.secrets"
-    fi
-
-    # Run on_start.sh to completion if present
-    if [ -f "$DEPLOY_DIR/on_start.sh" ]; then
-        echo "Running on_start.sh..."
-        chmod +x "$DEPLOY_DIR/on_start.sh"
-        bash "$DEPLOY_DIR/on_start.sh"
-        echo "on_start.sh completed."
-    fi
 
     # Install SDK (uses the install_vastai_sdk function which supports SDK_BRANCH/SDK_VERSION)
     install_vastai_sdk
-
     # Run deployment in serve mode
     export VAST_DEPLOYMENT_MODE=serve
     echo "Starting deployment: python3 $DEPLOY_DIR/deployment.py"
-    python3 "$DEPLOY_DIR/deployment.py"
+    serve-vast-deployment
     exit $?
 fi
 # ─── End SDK Deployment Mode ───────────────────────────────────────────