Flink SQL + Nu Batch support

scenario-examples-bootstrapper/data/flink/execute-flink-dml-scripts.sh

@@ -0,0 +1,45 @@
+#!/bin/bash -e
+
+cd "$(dirname "$0")"
+
+source ../../utils/lib.sh
+
+if [ "$#" -ne 1 ]; then
+    red_echo "ERROR: One parameter required: 1) scenario example folder path\n"
+    exit 1
+fi
+
+function execute_flink_sql_file() {
+  if [ "$#" -ne 1 ]; then
+    red_echo "ERROR: One parameter required: 1) Flink SQL file\n"
+    exit 11
+  fi
+
+  set -e
+
+  local FLINK_SQL_FILE_PATH=$1
+
+  echo "Executing Flink SQL file '$(basename "$FLINK_SQL_FILE_PATH")'... "
+  ../../utils/flink/execute-flink-sql-scripts.sh "$FLINK_SQL_FILE_PATH"
+}
+
+SCENARIO_EXAMPLE_DIR_PATH=${1%/}
+
+echo "Starting to execute Flink DML scripts..."
+
+shopt -s nullglob
+
+for ITEM in "$SCENARIO_EXAMPLE_DIR_PATH/data/flink/static"/*; do
+  if [ ! -f "$ITEM" ]; then
+    continue
+  fi
+
+  if [[ ! "$ITEM" == *.sql ]]; then
+    red_echo "ERROR: Unrecognized file $ITEM. Required file with extension '.sql' and content with DML statements\n"
+    exit 3
+  fi
+
+  execute_flink_sql_file "$ITEM"
+done
+
+echo -e "Flink DML scripts executed!\n"

scenario-examples-bootstrapper/data/keep-sending.sh

@@ -13,6 +13,7 @@ if is_data_generation_active; then
     if is_scenario_enabled "$FOLDER"; then
       echo -e "Starting to send static and generated data for scenario from ${GREEN}$FOLDER${RESET} directory...\n\n"
 
+      ./flink/execute-flink-dml-scripts.sh "$FOLDER" 
       ./http/send-http-static-requests.sh "$FOLDER"
       ./kafka/send-kafka-static-messages.sh "$FOLDER"
       ./http/continuously-send-http-generated-requests.sh "$FOLDER"

scenario-examples-bootstrapper/setup/flink/execute-flink-ddl-scripts.sh

@@ -0,0 +1,45 @@
+#!/bin/bash -e
+
+cd "$(dirname "$0")"
+
+source ../../utils/lib.sh
+
+if [ "$#" -ne 1 ]; then
+    red_echo "ERROR: One parameter required: 1) scenario example folder path\n"
+    exit 1
+fi
+
+function execute_flink_sql_file() {
+  if [ "$#" -ne 1 ]; then
+    red_echo "ERROR: One parameter required: 1) Flink SQL file\n"
+    exit 11
+  fi
+
+  set -e
+
+  local FLINK_SQL_FILE_PATH=$1
+
+  echo "Executing Flink SQL file '$(basename "$FLINK_SQL_FILE_PATH")'... "
+  ../../utils/flink/execute-flink-sql-scripts.sh "$FLINK_SQL_FILE_PATH"
+}
+
+SCENARIO_EXAMPLE_DIR_PATH=${1%/}
+
+echo "Starting to run Flink DDL scripts..."
+
+shopt -s nullglob
+
+for ITEM in "$SCENARIO_EXAMPLE_DIR_PATH/setup/flink"/*; do
+  if [ ! -f "$ITEM" ]; then
+    continue
+  fi
+
+  if [[ ! "$ITEM" == *.sql ]]; then
+    red_echo "ERROR: Unrecognized file $ITEM. Required file with extension '.sql'\n"
+    exit 2
+  fi
+
+  execute_flink_sql_file "$ITEM"
+done
+
+echo -e "Flink DDL scripts executed!\n"

scenario-examples-bootstrapper/setup/run-setup.sh

@@ -14,6 +14,7 @@ for FOLDER in /scenario-examples/*; do
 
     ./schema-registry/setup-schemas.sh "$FOLDER"
     ./kafka/setup-topics.sh "$FOLDER"
+    ./flink/execute-flink-ddl-scripts.sh "$FOLDER"
     ./nu/customize-nu-configuration.sh "$FOLDER"
     ./nu/import-and-deploy-example-scenarios.sh "$FOLDER"
 

scenario-examples-bootstrapper/utils/flink/execute-flink-sql-scripts.sh

@@ -0,0 +1,121 @@
+#!/bin/bash -e
+
+cd "$(dirname "$0")"
+
+source ../lib.sh
+
+if [ "$#" -ne 1 ]; then
+    red_echo "ERROR: One parameter required: 1) Flink SQL script path\n"
+    exit 1
+fi
+
+if ! [ -v FLINK_SQL_GATEWAY_ADDRESS ] || [ -z "$FLINK_SQL_GATEWAY_ADDRESS" ]; then
+  red_echo "ERROR: required variable FLINK_SQL_GATEWAY_ADDRESS not set or empty\n"
+  exit 2
+fi
+
+FLINK_SQL_FILE_PATH=$1
+
+if [ ! -f "$FLINK_SQL_FILE_PATH" ]; then
+  red_echo "ERROR: Cannot find Flink SQL script file $FLINK_SQL_FILE_PATH\n"
+  exit 3
+fi
+
+HOST='localhost:8083'
+
+function apiCall() {
+  if [ "$#" -lt 2 ]; then
+    red_echo "Error: Two parameters required: 1) HTTP method, 2) endpoint (should start with /) \n"
+    exit 11
+  fi
+
+  set -e
+
+  local METHOD=$1
+  local ENDPOINT=$2
+  local REQUEST_BODY=$3
+
+  local RESPONSE
+  if [[ -n "$REQUEST_BODY" ]]; then
+    RESPONSE=$(curl -s -L -w "\n%{http_code}" \
+      -X "$METHOD" "http://${FLINK_SQL_GATEWAY_ADDRESS}${ENDPOINT}" \
+      -H "Accept: application/json" \
+      -H "Content-Type: application/json" \
+      -d "$REQUEST_BODY"
+    )
+  else
+    RESPONSE=$(curl -s -L -w "\n%{http_code}" \
+      -X "$METHOD" "http://${FLINK_SQL_GATEWAY_ADDRESS}${ENDPOINT}" \
+      -H "Accept: application/json"
+    )
+  fi
+
+  local HTTP_STATUS
+  HTTP_STATUS=$(echo "$RESPONSE" | tail -n 1)
+
+  if [ "$HTTP_STATUS" == "200" ]; then
+    local RESPONSE_BODY
+    RESPONSE_BODY=$(echo "$RESPONSE" | sed \$d)
+    echo "$RESPONSE_BODY"
+  else
+    local RESPONSE_BODY
+    RESPONSE_BODY=$(echo "$RESPONSE" | sed \$d)
+    red_echo "ERROR: Call $METHOD $ENDPOINT failed. HTTP status: $HTTP_STATUS, Response: $RESPONSE_BODY"
+    exit 1
+  fi
+}
+
+SESSIONHANDLE=$(apiCall "POST" "/sessions" '{"properties": {"execution.runtime-mode": "batch"}}' | jq -r '.sessionHandle' )
+if [[ -z "$SESSIONHANDLE" ]]; then
+  red_echo "ERROR: Failed to establish session."
+  exit 1
+fi
+echo "Session $SESSIONHANDLE established."
+
+SQL_CONTENT=$(<"$FLINK_SQL_FILE_PATH")
+IFS=';'
+
+echo ""
+for statement in $SQL_CONTENT; do
+
+  if [[ -n "$statement" ]]; then
+    SQL_STATEMENT_ONE_LINE_WITHOUT_COMMENTS="$(echo $statement | sed 's/--.*//' | tr '\n' ' ' | tr -s ' ');"
+
+    echo -e "Processing SQL statement:\n$SQL_STATEMENT_ONE_LINE_WITHOUT_COMMENTS"
+
+    OPERATIONHANDLE=$(apiCall "POST" "/sessions/$SESSIONHANDLE/statements" "{\"statement\": \"$SQL_STATEMENT_ONE_LINE_WITHOUT_COMMENTS\"}" | jq -r '.operationHandle')
+
+    while true; do
+      STATUS=$(apiCall "GET" "/sessions/$SESSIONHANDLE/operations/$OPERATIONHANDLE/status" | jq -r '.status')
+      echo "Status: $STATUS"
+
+      case $STATUS in
+        "RUNNING")
+          sleep 2
+          ;;
+        "FINISHED")
+          break
+          ;;
+        *)
+          red_echo "ERROR: Unexpected status: $STATUS"
+          exit 1
+          ;;
+      esac
+    done
+
+    echo "--------------------------"
+  fi
+done
+
+unset IFS
+
+STATUS=$(apiCall "DELETE" "/sessions/$SESSIONHANDLE" | jq -r '.status')
+case $STATUS in
+  "CLOSED")
+    echo -e "\nSession $SESSIONHANDLE closed."
+    ;;
+  *)
+    red_echo "ERROR: Unexpected status: $STATUS"
+    exit 1
+    ;;
+esac

scenario-examples-bootstrapper/utils/nu/load-scenario-from-json-file.sh

@@ -143,23 +143,44 @@ function save_scenario() {
   echo "Scenario $SCENARIO_NAME saved successfully."
 }
 
-META_DATA_TYPE=$(jq -r .metaData.additionalFields.metaDataType < "$SCENARIO_FILE_PATH")
-case "$META_DATA_TYPE" in
-  "StreamMetaData")
+SCENARIO_FILE_NAME="${SCENARIO_FILE_PATH%.*}"
+case "$SCENARIO_FILE_NAME" in
+  *streaming)
+    echo "Assuming that scenario in $SCENARIO_FILE_PATH is a Streaming scenario..."
     ENGINE="Flink"
     PROCESSING_MODE="Unbounded-Stream"
     ;;
-  "LiteStreamMetaData")
-    ENGINE="Lite Embedded"
-    PROCESSING_MODE="Unbounded-Stream"
-    ;;
-  "RequestResponseMetaData")
+  *request-response)
+    echo "Assuming that scenario in $SCENARIO_FILE_PATH is a Request-Response scenario..."
     ENGINE="Lite Embedded"
     PROCESSING_MODE="Request-Response"
     ;;
+  *batch)
+    echo "Assuming that scenario in $SCENARIO_FILE_PATH is a Batch scenario..."
+    ENGINE="Flink"
+    PROCESSING_MODE="Bounded-Stream"
+    ;;
   *)
-    red_echo "ERROR: Cannot import scenario with metadata type: $META_DATA_TYPE\n"
-    exit 4
+    echo "Cannot distinguish processing mode based on scenario filename. Using metadata..."
+    META_DATA_TYPE=$(jq -r .metaData.additionalFields.metaDataType < "$SCENARIO_FILE_PATH")
+    case "$META_DATA_TYPE" in
+      "StreamMetaData")
+        ENGINE="Flink"
+        PROCESSING_MODE="Unbounded-Stream"
+        ;;
+      "LiteStreamMetaData")
+        ENGINE="Lite Embedded"
+        PROCESSING_MODE="Unbounded-Stream"
+        ;;
+      "RequestResponseMetaData")
+        ENGINE="Lite Embedded"
+        PROCESSING_MODE="Request-Response"
+        ;;
+      *)
+        red_echo "ERROR: Cannot import scenario with metadata type: $META_DATA_TYPE\n"
+        exit 4
+        ;;
+    esac
     ;;
 esac
 

version

@@ -1 +1 @@
-LIBRARY_DOCKER_IMAGE_VERSION=0.3.0
+LIBRARY_DOCKER_IMAGE_VERSION=0.4.0