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FunctionGraph
FunctionGraph
- What's New
- Function Overview
- Service Overview
- Billing
- Getting Started
-
User Guide
- Before You Start
- Building Functions
-
Configuring Functions
- Configuring Initialization
- Configuring Basic Settings
- Configuring Agency Permissions
- Configuring the Network
- Configuring Disk Mounting
- Configuring Environment Variables
- Configuring Asynchronous Execution Notification
- Configuring Single-Instance Multi-Concurrency
- Managing Versions
- Managing Aliases
- Configuring Dynamic Memory
- Configuring Heartbeat Function
- Configuring Tags
- Configuring a Log Group and Log Stream
- Online Debugging
- Creating Triggers
- Invoking the Function
- Monitoring
- Function Management
- Dependency Management
- Reserved Instance Management (Old)
- Reserved Instance Management
- Increasing Resource Quota
- CLI Command Reference
- Audit
- Best Practices
- devg
-
API Reference
- Before You Start
- API Overview
- Calling APIs
- Examples
- Extension and OpenTelemetry APIs
-
APIs
- Function Invocation
- Function Quotas
- Dependencies
- Test Events
- Function Tracing
-
Function Lifecycle Management
- Querying Functions
- Creating a Function
- Deleting a Function or Function Version
- Querying the Code of a Function
- Modifying the Code of a Function
- Querying the Metadata of a Function
- Modifying the Metadata of a Function
- Updating Max. Instances of a Function
- Querying Function Tags
- Enabling or Disabling the Snapshot Function
- Querying ServiceBridge Functions Bound to a Specified Function
- Querying Snapshot Status
- Querying Resource Tags
- Querying Resources
- Deleting Resource Tags
- Creating Resource Tags
- Updating the Pinning Status of a Function
- Querying the Available ServiceBridge Version
- Versions and Aliases
- Function Metrics
- Function Logs
- Function Templates
- Reserved Instances
- Function Import and Export
- Function Triggers
-
Function Flows
- Executing a Flow Synchronously
- Executing a Flow Asynchronously
- Deleting Flows
- Querying a Flow
- Creating a Flow
- Querying Instances of a Flow
- Querying a Flow Instance
- Querying Metadata of a Flow Instance
- Modifying Metadata of a Flow Instance
- Querying Flow Metrics
- Querying Metrics of a Flow
- Re-executing a Flow
- Stopping a Flow
- Querying Records of a Flow in Pagination Mode
- Calling Back a Flow
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Asynchronous Execution Notification
- Querying Asynchronous Execution Notification Settings of a Function Version
- Deleting Asynchronous Execution Notification Settings
- Configuring Asynchronous Execution Notification
- Querying Asynchronous Execution Notification Settings of a Function's All Versions
- Querying Asynchronous Invocation Requests
- Querying Active Asynchronous Invocation Requests
- Stopping an Asynchronous Invocation Request
- Permissions Policies and Supported Actions
- Appendix
- Change History
- SDK Reference
-
FAQs
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General FAQs
- What Is FunctionGraph?
- Do I Need to Apply for Any Compute, Storage, or Network Services When Using FunctionGraph?
- Do I Need to Deploy My Code After Programming?
- How Do I Obtain a Token?
- What Runtimes Does FunctionGraph Support?
- How Much Disk Space Is Allocated to Each FunctionGraph Function?
- Does FunctionGraph Support Function Versioning?
- How Does a Function Read or Write Files?
- How Do I Set a Proxy When Using CLI?
- Does FunctionGraph Support Function Extension?
- Which Permissions Are Required for an IAM User to Use FunctionGraph?
- How Can I Create an ODBC Drive-based Python Dependency Package for Database Query?
- What Is the Quota of FunctionGraph?
- What Chinese Fonts Does FunctionGraph Support?
- How Does FunctionGraph Resolve a Private DNS Domain Name?
- How Does a Container Image–based Function Resolve a Private DNS Domain Name?
- How Do I Use a Domain Name to Access an API Registered with API Gateway (Dedicated)?
- What Are the Common Application Scenarios of FunctionGraph?
- Why Can't the API Gateway Domain Name Bound to a Service Be Resolved During Function Invocation?
- Does FunctionGraph Support Synchronous Transmission at the Maximum Intranet Bandwidth?
- What If the VPC Quota Is Used Up?
- How Can I Print Info, Error, or Warn Logs?
- Can I Set the Domain Name of an API to My Own Domain Name?
- Can I Change the Runtime?
- Can I Change a Function's Name?
- Why Is Message "failed to mount exist system path" Displayed?
- How Do I Obtain Uploaded Files?
- Why Can't I Receive Responses for Synchronous Invocation?
- What Should I Do If the os.system("command &") Execution Logs Are Not Collected?
- Which Directories Can Be Accessed When a Custom Runtime Is Used?
- Which Minor Versions of Python 3.6 and 3.9 Are Supported?
- Which Actions Can Be Used Instead of a VPC Administrator Agency for VPC Access?
- What Are the Possible Causes for Function Timeout?
- How Do I Obtain the Code of a Function?
- Do You Have Sample Code for Initializers?
- How Do I Enable Structured Log Query?
- Can I Enable a Listening Port in a Function to Receive External TCP Requests via EIP?
- Does FunctionGraph Support Domain Name Resolution?
- How Do I Obtain the Source IP Address of an HTTP Request Initiated by a Function?
- Function Creation FAQs
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Trigger Management FAQs
- What Events Can Trigger a FunctionGraph Function?
- What If Error Code 500 Is Reported When Functions that Use APIG Triggers Return Strings?
- What Do LATEST and TRIM_HORIZON Mean in DIS Trigger Configuration?
- How Do I Use an APIG Trigger to Invoke a Function?
- How Does a Function Obtain the Request Path or Parameters When Using an APIG Trigger?
- Can I Configure a Kafka Trigger in a Different Subnet from My Function?
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Dependency Management FAQs
- What Is a Dependency?
- When Do I Need a Dependency?
- What Are the Precautions for Using a Dependency?
- What Dependencies Does FunctionGraph Support?
- Does FunctionGraph Support Class Libraries?
- How Do I Use Third-Party Dependencies on FunctionGraph?
- How Do I Create Function Dependencies?
- How Do I Create a Dependency on the FunctionGraph Console?
- How Do I Add a Dependency to a Function?
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Function Execution FAQs
- How Long Does It Take to Execute a FunctionGraph Function?
- Which Steps Are Included in Function Execution?
- How Does FunctionGraph Process Concurrent Requests?
- What If Function Instances Have Not Been Executed for a Long Time?
- How Can I Speed Up Initial Access to a Function?
- How Do I Know the Actual Memory Used for Function Execution?
- Why Is My First Request Slow?
- What Do I Do If an Error Occurs When Calling an API?
- How Do I Read the Request Header of a Function?
- Can the Synchronous Execution Interface Be Invoked on a Private Network?
- Why Does a Function Use More Memory Than Estimated and Even Trigger the Out of Memory Alarm?
- How Do I Check the Memory Usage When Seeing "runtime memory limit exceeded"?
- How Do I Troubleshoot "CrashLoopBackOff"?
- After I Updated an Image with the Same Name, Reserved Instances Still Use the Old Image. What Can I Do?
- Function Configuration FAQs
- External Resource Access FAQs
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Other FAQs
- How Do I View the Alarm Rules Configured for a Function?
- Does FunctionGraph Support ZIP Decompiling During Video Transcoding?
- Will Resources Created During FunctionGraph 2.0 OBT Be Automatically Released When They Expire? Will Them Be Billed?
- What Is an App in FunctionGraph?
- Do I Need to Pay for Cold Start Time?
- Why Am I Seeing a Message Indicating that My Account Was Suspended When Creating a Function?
- Will the Requests of All My Functions in Different Regions Be Billed?
- Migration from FunctionGraph V1 to V2
-
General FAQs
Introduction
Updated on 2023-07-07 GMT+08:00
The best practice for FunctionGraph guides you through image watermarking based on a function.
Scenarios
- Upload images to a specified OBS bucket.
- Watermark each uploaded image.
- Upload the processed images to another specified OBS bucket.
NOTE:
- This tutorial uses two different OBS buckets.
- The function you create must be in the same region (default region) as the OBS buckets.
Procedure
- Create two buckets on the OBS console.
- Create a function with an OBS trigger.
- Upload an image to one of the buckets.
- The function is triggered to watermark the image.
- The function uploads the processed image to the other bucket.
NOTE:
After you complete the operations in this tutorial, your account will have the following resources:
- Two OBS buckets (respectively used for storing uploaded and processed images)
- An image watermarking function
- An OBS trigger used for associating the function with the OBS buckets
Parent topic: Watermarking Images
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