PHPackages umich-its-tl/viadutoo - PHPackages - PHPackages [Skip to content](#main-content)[PHPackages](/)[Directory](/)[Categories](/categories)[Trending](/trending)[Leaderboard](/leaderboard)[Changelog](/changelog)[Analyze](/analyze)[Collections](/collections)[Log in](/login)[Sign up](/register) 1. [Directory](/) 2. / 3. [Caching](/categories/caching) 4. / 5. umich-its-tl/viadutoo ActiveLibrary[Caching](/categories/caching) umich-its-tl/viadutoo ===================== Viadutoo: caching proxy endpoint for Caliper event data 1.1.0(10y ago)184proprietaryPHPPHP >=5.4 Since Jan 8Pushed 9y ago8 watchersCompare [ Source](https://github.com/tl-its-umich-edu/viadutoo)[ Packagist](https://packagist.org/packages/umich-its-tl/viadutoo)[ RSS](/packages/umich-its-tl-viadutoo/feed)WikiDiscussions master Synced today READMEChangelog (1)Dependencies (1)Versions (9)Used By (0) Viadutoo ======== [](#viadutoo) About ----- [](#about) Viadutoo (From the Portuguese word for viaduct, "viaduto". Pronounced as "vee-uh-DOO-too" or in IPA: \[vi.a.dˈu.tʊ\].) is a kind of caching proxy endpoint for Caliper event data. As a proxy, its purpose is to accept Caliper event payloads from sensors as quickly as possible, then resend them to a preconfigured upstream endpoint. If the upstream endpoint is unable to accept the event payload for some reason, the caching feature will store the event data in a database for future processing. Requirements ------------ [](#requirements) - PHP 5.4 or greater - One of the following PHP HTTP client extensions: - curl (usually this is already included with PHP interpreter) - pecl\_http - Composer (not strictly required, but highly recommended) - For installation details, see: Usage ----- [](#usage) - Update the `composer.json` file in the root directory of your project as follows: - The `require` section should include the following: ``` { "require": { "php": ">=5.4", "umich-its-tl/viadutoo": "1.1.0" } } ``` - If a repository is not specified, Composer will install Viadutoo from Packagist (). However, to specify a GitHub repository as the source instead, include the following in the `repositories` section: ``` { "repositories": [ { "type": "vcs", "url": "https://github.com/tl-its-umich-edu/viadutoo" } ] } ``` This is one way to specify your own repository, for example, if you want to modify your own fork of Viadutoo. You would specify the URL of your own repository. - Use Composer to install the package with the command: ``` composer install ``` Composer will create the `vendor` directory to hold the package and other related information. - Composer will create PHP classes to help you load Viadutoo (and any other packages it has loaded) into your application. In your PHP code, use it like: ``` /* * If necessary, use set_include_path() to ensure the directory * containing the "vendor" directory is in the PHP include path. */ require_once 'vendor/autoload.php'; // Composer loader for Viadutoo, etc. ``` - Initialize and use Viadutoo in your PHP code like this: ``` $proxy = (new MessageProxy()) ->setTransportInterface( (new CurlTransport()) // Recommended transport with cURL, supports Basic Auth and OAuth 1.0 ->setAuthZType(CurlTransport::AUTHZ_TYPE_OAUTH1, 'OAuth 1.0 key', 'OAuth 1.0 secret') // Optional authZ ) ->setEndpointUrl('http://example.com/endpoint') ->setTimeoutSeconds(10) ->setAutostoreOnSendFailure(true) ->setStorageInterface( new MysqlStorage( 'mysql.example.org', 'dbUser', 'dbPassword', 'dbName', 'viadutoo_events' ) ); // ... try { $proxy ->setHeaders($headers) ->setBody($jsonBody) ->send(); } catch (Exception $exception) { error_log($exception->getMessage()); } ``` For a more detailed example of using Viadutoo in an application, see `public/index.php`. Example ------- [](#example) An example application is included in the `public` directory. Execute it as: ``` cd public php -S 127.0.0.1:8989 ``` The application is written to send all data to `http://lti.tools/caliper/event?key=viadutoo`. Simply configure a Caliper sensor to send events to `http://127.0.0.1:8989/` and they will be sent on to the `lti.tools` endpoint. ### Health Score 29 — LowBetter than 57% of packages Maintenance20 Infrequent updates — may be unmaintained Popularity11 Limited adoption so far Community12 Small or concentrated contributor base Maturity63 Established project with proven stability Bus Factor1 Top contributor holds 99% of commits — single point of failure How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Every ~72 days Total 3 Last Release 3670d ago ### Community Maintainers ![](https://avatars.githubusercontent.com/u/20786?v=4)[Mr. Lance E Sloan «UMich»](/maintainers/lsloan)[@lsloan](https://github.com/lsloan) --- Top Contributors [![lsloan](https://avatars.githubusercontent.com/u/20786?v=4)](https://github.com/lsloan "lsloan (96 commits)")[![bethkirschner](https://avatars.githubusercontent.com/u/138902?v=4)](https://github.com/bethkirschner "bethkirschner (1 commits)") --- Tags learning-analyticsviadutoo ### Embed Badge ![Health badge](/badges/umich-its-tl-viadutoo/health.svg) ``` [![Health](https://phpackages.com/badges/umich-its-tl-viadutoo/health.svg)](https://phpackages.com/packages/umich-its-tl-viadutoo) ``` ### Alternatives [beryllium/cachebundle Provides an interface to Memcache for Symfony2 applications 32136.0k](/packages/beryllium-cachebundle) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)