base on The first multichain squid for the network launch quests <p align="center"> <picture> <source srcset="https://uploads-ssl.webflow.com/63b5a9958fccedcf67d716ac/64662df3a5a568fd99e3600c_Squid_Pose_1_White-transparent-slim%201.png" media="(prefers-color-scheme: dark)"> <img src="https://uploads-ssl.webflow.com/63b5a9958fccedcf67d716ac/64662df3a5a568fd99e3600c_Squid_Pose_1_White-transparent-slim%201.png" alt="Subsquid Logo"> </picture> </p> [](https://docs.subsquid.io/) [](https://discord.gg/subsquid) [Website](https://subsquid.io) | [Docs](https://docs.subsquid.io/) | [Discord](https://discord.gg/subsquid) [Subsquid Network FAQ](https://docs.subsquid.io/subsquid-network/) # Deploy a double processor squid This is a quest to run a squid with two processors. Here is how to run it: ### I. Install dependencies: Node.js, Docker, Git. <details> <summary>On Windows</summary> 1. Enable [Hyper-V](https://learn.microsoft.com/en-us/virtualization/hyper-v-on-windows/quick-start/enable-hyper-v). 2. Install [Docker for Windows](https://docs.docker.com/desktop/install/windows-install/). 3. Install NodeJS LTS using the [official installer](https://nodejs.org/en/download). 4. Install [Git for Windows](https://git-scm.com/download/win). In all installs it is OK to leave all the options at their default values. You will need a terminal to complete this tutorial - [WSL](https://learn.microsoft.com/en-us/windows/wsl/install) bash is the preferred option. </details> <details> <summary>On Mac</summary> 1. Install [Docker for Mac](https://docs.docker.com/desktop/install/mac-install/). 2. Install Git using the [installer](https://sourceforge.net/projects/git-osx-installer/) or by [other means](https://git-scm.com/download/mac). 3. Install NodeJS LTS using the [official installer](https://nodejs.org/en/download). We recommend configuring NodeJS to install global packages to a folder owned by an unprivileged account. Create the folder by running ```bash mkdir ~/global-node-packages ``` then configure NodeJS to use it ```bash npm config set prefix ~/global-node-packages ``` Make sure that the folder `~/global-node-packages/bin` is in `PATH`. That allows running globally installed NodeJS executables from any terminal. Here is a one-liner that detects your shell and takes care of setting `PATH`: ``` CURSHELL=`ps -hp $$ | awk '{print $5}'`; case `basename $CURSHELL` in 'bash') DEST="$HOME/.bash_profile";; 'zsh') DEST="$HOME/.zshenv";; esac; echo 'export PATH="${HOME}/global-node-packages/bin:$PATH"' >> "$DEST" ``` Alternatively you can add the following line to `~/.zshenv` (if you are using zsh) or `~/.bash_profile` (if you are using bash) manually: ``` export PATH="${HOME}/global-node-packages/bin:$PATH" ``` Re-open the terminal to apply the changes. </details> <details> <summary>On Linux</summary> Install [NodeJS (v16 or newer)](https://nodejs.org/en/download/package-manager), Git and Docker using your distro's package manager. We recommend configuring NodeJS to install global packages to a folder owned by an unprivileged account. Create the folder by running ```bash mkdir ~/global-node-packages ``` then configure NodeJS to use it ```bash npm config set prefix ~/global-node-packages ``` Make sure that any executables globally installed by NodeJS are in `PATH`. That allows running them from any terminal. Open the `~/.bashrc` file in a text editor and add the following line at the end: ``` export PATH="${HOME}/global-node-packages/bin:$PATH" ``` Re-open the terminal to apply the changes. </details> ### II. Install Subsquid CLI Open a terminal and run ```bash npm install --global @subsquid/cli@latest ``` This adds the [`sqd` command](/squid-cli). Verify that the installation was successful by running ```bash sqd --version ``` A healthy response should look similar to ``` @subsquid/cli/2.5.0 linux-x64 node-v20.5.1 ``` ### III. Run the squid 1. Open a terminal and run the following commands to create the squid and enter its folder: ```bash sqd init my-double-proc-squid -t https://github.com/subsquid-quests/double-chain-squid ``` ```bash cd my-double-proc-squid ``` You can replace `my-double-proc-squid` with any name you choose for your squid. If a squid with that name already exists in [Aquarium](https://docs.subsquid.io/deploy-squid/), the first command will throw an error; if that happens simply think of another name and repeat the commands. 2. Press "Get Key" button in the quest card to obtain the `doubleProc.key` key file. Save it to the `./query-gateway/keys` subfolder of the squid folder. The file will be used by the query gateway container. 3. The template squid uses a PostgreSQL database and a query gateway. Start Docker containers that run these with ```bash sqd up ``` Wait for about a minute before proceeding to the next step. If you get an error message about `unknown shorthand flag: 'd' in -d`, that means that you're using an old version of `docker` that does not support the `compose` command yet. Update Docker or edit the `commands.json` file as follows: ```diff "up": { "deps": ["check-key"], "description": "Start a PG database", - "cmd": ["docker", "compose", "up", "-d"] + "cmd": ["docker-compose", "up", "-d"] }, "down": { "description": "Drop a PG database", - "cmd": ["docker", "compose", "down"] + "cmd": ["docker-compose", "down"] }, ``` 4. Prepare the squid for running by installing dependencies, building the source code and creating all the necessary database tables: ```bash npm ci sqd build sqd migration:apply ``` 5. Start your squid with ```bash sqd run . ``` The command should output lines like these: ``` [api] 22:00:36 WARN sqd:graphql-server enabling dumb in-memory cache (size: 100mb, ttl: 1000ms, max-age: 1000ms) [api] 22:00:36 INFO sqd:graphql-server listening on port 4350 [eth-processor] 22:00:36 INFO sqd:processor processing blocks from 16000000 [eth-processor] 22:00:36 INFO sqd:processor using archive data source [eth-processor] 22:00:36 INFO sqd:processor prometheus metrics are served at port 40163 [bsc-processor] 22:00:36 INFO sqd:processor processing blocks from 28000000 [bsc-processor] 22:00:36 INFO sqd:processor using archive data source [bsc-processor] 22:00:36 INFO sqd:processor prometheus metrics are served at port 39533 [bsc-processor] 22:00:39 INFO sqd:processor 28004339 / 32107455, rate: 1537 blocks/sec, mapping: 603 blocks/sec, 1157 items/sec, eta: 45m [eth-processor] 22:00:40 INFO sqd:processor 16005819 / 18226899, rate: 1686 blocks/sec, mapping: 644 blocks/sec, 1224 items/sec, eta: 22m [bsc-processor] 22:00:44 INFO sqd:processor 28011319 / 32107455, rate: 1503 blocks/sec, mapping: 648 blocks/sec, 1250 items/sec, eta: 46m ``` The squid should sync in 25-30 minutes. When it's done, stop it with Ctrl-C, then stop and remove the auxiliary containers with ```bash sqd down ``` # Quest Info | Category | Skill Level | Time required (minutes) | Max Participants | Reward | Status | | ---------------- | ------------------------------------ | ----------------------- | ---------------- | ----------------------------------- | ------ | | Squid Deployment | $\textcolor{green}{\textsf{Simple}}$ | ~40 | - | $\textcolor{red}{\textsf{500tSQD}}$ | open | # Acceptance critera Sync this squid using the key from the quest card. The syncing progress is tracked by the amount of data the squid has retrieved from [Subsquid Network](https://docs.subsquid.io/subsquid-network). # About this squid This [squid](https://docs.subsquid.io/) captures USDC Transfer events on ETH and BSC, stores them in the same database and serves the data over a common GraphQL API. The Ethereum data ingester ("processor") is located in `src/eth` and similarly the Binance Chain processor can be found in `src/bsc`. The scripts file `commands.json` was updated with the commands `process:eth` and `process:bsc` that run the processors. GraphQL server runs as a separate process started by `sqd serve`. You can also use `sqd run` to run all the services at once. The squid uses [Subsquid Network](https://docs.subsquid.io/subsquid-network) as its primary data source. ", Assign "at most 3 tags" to the expected json: {"id":"3091","tags":[]} "only from the tags list I provide: [{"id":39,"name":"3d-generation","display_name":"3D generation","slug":"3d-generation"},{"id":3,"name":"ai-agent","display_name":"AI agent","slug":"ai-agent"},{"id":8,"name":"ai-coding","display_name":"AI coding assistant","slug":"ai-coding"},{"id":5,"name":"ai-image","display_name":"AI image generation","slug":"ai-image"},{"id":9,"name":"ai-infrastructure","display_name":"AI infrastructure","slug":"ai-infrastructure"},{"id":10,"name":"ai-memory","display_name":"AI memory","slug":"ai-memory"},{"id":11,"name":"ai-skills","display_name":"AI skills","slug":"ai-skills"},{"id":12,"name":"ai-translation","display_name":"AI translation","slug":"ai-translation"},{"id":6,"name":"ai-video","display_name":"AI video generation","slug":"ai-video"},{"id":4,"name":"ai-voice","display_name":"AI voice","slug":"ai-voice"},{"id":7,"name":"ai-workflow","display_name":"AI workflow","slug":"ai-workflow"},{"id":22,"name":"audio-processing","display_name":"Audio processing","slug":"audio-processing"},{"id":29,"name":"authentication","display_name":"Authentication","slug":"authentication"},{"id":51,"name":"bundler","display_name":"Bundler","slug":"bundler"},{"id":41,"name":"chatbot","display_name":"Chatbot","slug":"chatbot"},{"id":27,"name":"cloud-native","display_name":"Cloud native","slug":"cloud-native"},{"id":1,"name":"computer-vision","display_name":"Computer vision","slug":"computer-vision"},{"id":37,"name":"crypto-trading","display_name":"Crypto trading","slug":"crypto-trading"},{"id":57,"name":"curated-list","display_name":"Curated list","slug":"curated-list"},{"id":54,"name":"data-streaming","display_name":"Data streaming","slug":"data-streaming"},{"id":35,"name":"data-visualization","display_name":"Data visualization","slug":"data-visualization"},{"id":16,"name":"database-backup","display_name":"Database backup","slug":"database-backup"},{"id":49,"name":"design-system","display_name":"Design system","slug":"design-system"},{"id":38,"name":"digital-human","display_name":"Digital human","slug":"digital-human"},{"id":34,"name":"document-processing","display_name":"Document processing","slug":"document-processing"},{"id":44,"name":"ecommerce","display_name":"E-commerce","slug":"ecommerce"},{"id":45,"name":"emulator","display_name":"Emulator","slug":"emulator"},{"id":46,"name":"file-management","display_name":"File management","slug":"file-management"},{"id":32,"name":"fintech","display_name":"Fintech","slug":"fintech"},{"id":31,"name":"game-development","display_name":"Game development","slug":"game-development"},{"id":24,"name":"headless-browser","display_name":"Headless browser","slug":"headless-browser"},{"id":52,"name":"headless-cms","display_name":"Headless CMS","slug":"headless-cms"},{"id":36,"name":"home-automation","display_name":"Home automation","slug":"home-automation"},{"id":20,"name":"image-editing","display_name":"Image editing","slug":"image-editing"},{"id":28,"name":"iot","display_name":"IoT","slug":"iot"},{"id":13,"name":"local-llm","display_name":"Local LLM","slug":"local-llm"},{"id":17,"name":"mcp","display_name":"MCP","slug":"mcp"},{"id":47,"name":"monitoring","display_name":"Monitoring","slug":"monitoring"},{"id":2,"name":"nlp","display_name":"NLP","slug":"nlp"},{"id":26,"name":"observability","display_name":"Observability","slug":"observability"},{"id":40,"name":"pentesting","display_name":"Pentesting","slug":"pentesting"},{"id":48,"name":"programming-examples","display_name":"Programming examples","slug":"programming-examples"},{"id":42,"name":"proxy","display_name":"Proxy","slug":"proxy"},{"id":14,"name":"rag","display_name":"RAG","slug":"rag"},{"id":56,"name":"resume-building","display_name":"Resume building","slug":"resume-building"},{"id":33,"name":"robotics","display_name":"Robotics","slug":"robotics"},{"id":30,"name":"search","display_name":"Search","slug":"search"},{"id":43,"name":"self-hosted","display_name":"Self-hosted","slug":"self-hosted"},{"id":50,"name":"static-analysis","display_name":"Static analysis","slug":"static-analysis"},{"id":18,"name":"synthetic-data","display_name":"Synthetic data","slug":"synthetic-data"},{"id":19,"name":"text-to-speech","display_name":"Text to speech","slug":"text-to-speech"},{"id":53,"name":"ui-components","display_name":"UI components","slug":"ui-components"},{"id":15,"name":"vector-database","display_name":"Vector database","slug":"vector-database"},{"id":21,"name":"video-editing","display_name":"Video editing","slug":"video-editing"},{"id":25,"name":"web-scraping","display_name":"Web scraping","slug":"web-scraping"},{"id":55,"name":"webassembly","display_name":"WebAssembly","slug":"webassembly"},{"id":23,"name":"workflow-automation","display_name":"Workflow automation","slug":"workflow-automation"}]" returns me the "expected json"