Wait for apama correlator ready after project install (#702)

plugins/tedge_apama_plugin/src/main.rs

@@ -177,6 +177,7 @@ fn install_project(project_archive_path: &Path) -> Result<(), InternalError> {
     println!("Installation of new project successful");
 
     restart_apama_service()?;
+    wait_for_apama_correlator_ready()?;
 
     Ok(())
 }
@@ -188,6 +189,13 @@ fn restart_apama_service() -> Result<(), InternalError> {
     Ok(())
 }
 
+fn wait_for_apama_correlator_ready() -> Result<(), InternalError> {
+    println!("Waiting for apama correator to be ready for upto 10 seconds");
+    run_cmd(APAMA_ENV_EXE, "engine_management --waitFor 10")?;
+    println!("Apama correator is ready");
+    Ok(())
+}
+
 fn remove_project(_project_name: &str) -> Result<(), InternalError> {
     let tedge_apama_project_path: &Path = Path::new(TEDGE_APAMA_PROJECT_DIR);