feat: introduce trigger functionality (#27644)

Signed-off-by: lyzno1 <yuanyouhuilyz@gmail.com>
Co-authored-by: Stream <Stream_2@qq.com>
Co-authored-by: lyzno1 <92089059+lyzno1@users.noreply.github.com>
Co-authored-by: zhsama <torvalds@linux.do>
Co-authored-by: Harry <xh001x@hotmail.com>
Co-authored-by: lyzno1 <yuanyouhuilyz@gmail.com>
Co-authored-by: yessenia <yessenia.contact@gmail.com>
Co-authored-by: hjlarry <hjlarry@163.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
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Co-authored-by: WTW0313 <twwu@dify.ai>
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docker/.env.example

@@ -24,6 +24,11 @@ CONSOLE_WEB_URL=
 # Example: https://api.dify.ai
 SERVICE_API_URL=
 
+# Trigger external URL
+# used to display trigger endpoint API Base URL to the front-end.
+# Example: https://api.dify.ai
+TRIGGER_URL=http://localhost
+
 # WebApp API backend Url,
 # used to declare the back-end URL for the front-end API.
 # If empty, it is the same domain.
@@ -998,6 +1003,9 @@ HTTP_REQUEST_MAX_WRITE_TIMEOUT=600
 # Base64 encoded client private key data for mutual TLS authentication (PEM format, optional)
 # HTTP_REQUEST_NODE_SSL_CLIENT_KEY_DATA=LS0tLS1CRUdJTi...
 
+# Webhook request configuration
+WEBHOOK_REQUEST_BODY_MAX_SIZE=10485760
+
 # Respect X-* headers to redirect clients
 RESPECT_XFORWARD_HEADERS_ENABLED=false
 
@@ -1370,6 +1378,10 @@ ENABLE_CLEAN_MESSAGES=false
 ENABLE_MAIL_CLEAN_DOCUMENT_NOTIFY_TASK=false
 ENABLE_DATASETS_QUEUE_MONITOR=false
 ENABLE_CHECK_UPGRADABLE_PLUGIN_TASK=true
+ENABLE_WORKFLOW_SCHEDULE_POLLER_TASK=true
+WORKFLOW_SCHEDULE_POLLER_INTERVAL=1
+WORKFLOW_SCHEDULE_POLLER_BATCH_SIZE=100
+WORKFLOW_SCHEDULE_MAX_DISPATCH_PER_TICK=0
 
 # Tenant isolated task queue configuration
 TENANT_ISOLATED_TASK_CONCURRENCY=1