{"id":26054614,"url":"https://github.com/schultyy/mustermann","last_synced_at":"2026-02-21T11:02:01.388Z","repository":{"id":279896481,"uuid":"940363107","full_name":"schultyy/mustermann","owner":"schultyy","description":"Generate Test Data for your OpenTelemetry pipeline","archived":false,"fork":false,"pushed_at":"2025-04-13T02:24:38.000Z","size":812,"stargazers_count":2,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-10-09T03:58:35.366Z","etag":null,"topics":["logs","opentelemetry","otlp","rust","tracing"],"latest_commit_sha":null,"homepage":"https://crates.io/crates/mustermann","language":"Rust","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/schultyy.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null}},"created_at":"2025-02-28T03:34:53.000Z","updated_at":"2025-04-13T02:24:42.000Z","dependencies_parsed_at":"2025-02-28T11:19:11.479Z","dependency_job_id":"5742c1c3-f30d-4454-b869-02c9d36aa737","html_url":"https://github.com/schultyy/mustermann","commit_stats":null,"previous_names":["schultyy/mustermann"],"tags_count":12,"template":false,"template_full_name":null,"purl":"pkg:github/schultyy/mustermann","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/schultyy%2Fmustermann","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/schultyy%2Fmustermann/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/schultyy%2Fmustermann/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/schultyy%2Fmustermann/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/schultyy","download_url":"https://codeload.github.com/schultyy/mustermann/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/schultyy%2Fmustermann/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":29679049,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-02-21T09:33:50.764Z","status":"ssl_error","status_checked_at":"2026-02-21T09:33:19.949Z","response_time":107,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.5:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["logs","opentelemetry","otlp","rust","tracing"],"created_at":"2025-03-08T09:12:07.127Z","updated_at":"2026-02-21T11:02:01.370Z","avatar_url":"https://github.com/schultyy.png","language":"Rust","funding_links":[],"categories":["Synthetic Data Generators"],"sub_categories":["Application Simulators"],"readme":"# mustermann\n\n![CI](https://github.com/schultyy/mustermann/actions/workflows/ci.yml/badge.svg)\n\u003cbr /\u003e\n\u003cimg src=\"picture.jpeg\" alt=\"Mustermann\" width=\"300\"\u003e\n\nMustermann is a CLI tool that generates test data for OpenTelemetry pipelines using a custom virtual machine. It allows you to define complex service interactions and log patterns through YAML configuration files, making it perfect for testing and validating your observability infrastructure.\n\n## Features\n\n- Generate realistic test data for OpenTelemetry pipelines\n- Define service interactions and dependencies\n- Create custom log patterns with variable substitution\n- Control execution frequency and patterns\n- Support for different log severity levels\n- Custom virtual machine for efficient execution\n\n## Installation\n\n```bash\ncargo install mustermann\n```\n\nOr install it from the [releases page](https://github.com/schultyy/mustermann/releases).\n\n## Usage\n\n```bash\nmustermann [OPTIONS] \u003cfile_path\u003e [otel_endpoint] [--service-name \u003cservice_name\u003e]\n```\n\n### Options\n\n- `-p, --print-code`: Enable debug mode to print generated bytecode\n- `-s, --service-name \u003cservice_name\u003e`: The name of the service to be used in the logs (default: \"mustermann\")\n- `file_path`: Path to the configuration YAML file\n- `otel_endpoint`: Optional OpenTelemetry endpoint URL\n\n### Example\n\n```bash\nmustermann config.yaml http://localhost:4317 --service-name my-service\n```\n\nStandalone service just printing values:\n\n```\nservice payments {\n  method charge {\n    print \"Processing payment for order %s\" with [\"12345\", \"67890\"];\n    sleep 500ms;\n  }\n\n  loop {\n    call charge;\n  }\n}\n```\n\nStandalone service printing values to stderr:\n\n```\nservice payments {\n  method charge {\n    stderr \"Processing payment for order %s\" with [\"12345\", \"67890\"];\n    sleep 500ms;\n  }\n\n  loop {\n    call charge;\n  }\n}\n```\n\nService accepting requests from other services:\n\n```\nservice payments {\n  method charge {\n    print \"Processing payment for order %s\" with [\"12345\", \"67890\"];\n    sleep 500ms;\n  }\n}\n```\n\nCall another service:\n\n```\nservice products {\n  method get_products {\n    print \"Fetching product orders %s\" with [\"12345\", \"67890\"];\n    sleep 500ms;\n  }\n}\n\nservice frontend {\n  method main_page {\n    print \"Main page\";\n    call products.get_products;\n  }\n\n  loop {\n    call main_page;\n  }\n}\n```\n\n## Multi-service example\n\n```\nservice products {\n  method get_products {\n    print \"Fetching product orders %s\" with [\"12345\", \"67890\"];\n    sleep 500ms;\n  }\n}\n\nservice features {\n  method is_enabled {\n    print \"Check if feature is enabled %s\" with [\"login\", \"upload\", \"create\"];\n    sleep 1000ms;\n  }\n}\n\nservice frontend {\n  method login {\n    print \"Main page\";\n    call features.is_enabled;\n  }\n\n  loop {\n    call login;\n  }\n}\n\nservice analytics {\n  method main_page {\n    print \"Main page\";\n    call products.get_products;\n  }\n\n  loop {\n    call main_page;\n  }\n}\n\n\nservice frontend_b {\n  method main_page {\n    print \"Main page\";\n    call products.get_products;\n  }\n\n  loop {\n    call main_page;\n  }\n}\n```\n\nThis service definition will generate the following service map:\n\n![servicemap](servicemap.png)\n\n## License\n\nMIT\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fschultyy%2Fmustermann","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fschultyy%2Fmustermann","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fschultyy%2Fmustermann/lists"}