diff --git a/README.md b/README.md index 79829d0..13e0bf8 100644 --- a/README.md +++ b/README.md @@ -12,6 +12,7 @@ This repository contains examples of [embedding Observable notebooks](https://ob | [**custom-fluid-width**](https://github.com/observablehq/examples/tree/main/custom-fluid-width/) | Resize a chart when the window is resized | | [**custom-fluid-width-and-height**](https://github.com/observablehq/examples/tree/main/custom-fluid-width-and-height/) | Resize a chart when its container is resized | | [**custom-library**](https://github.com/observablehq/examples/tree/main/custom-library/) | Override the Observable Standard Library | +| [**secret**](https://github.com/observablehq/examples/tree/main/secret) | Override the implementation of Secrets | | [**standalone**](https://github.com/observablehq/examples/tree/main/standalone/) | Self-host an Observable notebook with no external dependencies | | [**versioning**](https://github.com/observablehq/examples/tree/main/versioning/) | Embed a specific version of a notebook | | [**iframe-resize**](https://github.com/observablehq/examples/tree/main/iframe-resize/) | Implementing Embedly’s protocol for Iframes that resize to match their contents | diff --git a/secret/9cdbbe083c4d48f4@9.js b/secret/9cdbbe083c4d48f4@9.js new file mode 100644 index 0000000..d49d79a --- /dev/null +++ b/secret/9cdbbe083c4d48f4@9.js @@ -0,0 +1,7 @@ +export default function define(runtime, observer) { + const main = runtime.module(); + main.variable(observer()).define(["Secret"], function(Secret){return( +Secret("MY_SECRET_KEY") +)}); + return main; +} diff --git a/secret/README.md b/secret/README.md new file mode 100644 index 0000000..26a2e22 --- /dev/null +++ b/secret/README.md @@ -0,0 +1,19 @@ +# Observable Example: Secret + +See it live: https://observablehq.github.io/examples/secret + +Observable lets you configure [Secrets](https://observablehq.com/@observablehq/secrets). Sensitive variables can be stored outside your code and returned by calling `Secret("MY_SECRET_KEY")`, which might return a password like `"$w0rdf1sh"`. If you publish the notebook, the Secret will throw an error instead of returning a value, so that the Secret is not publicly exposed. + +Calling `Secret` will also throw an error if you download the notebook — but sometimes, you might be downloading it to run in your own secure setting where you’d like to set the Secret a different way. This example shows how to use your own implementation of the Secret function to provide things like environment variables or API keys without rewriting your code. + +In this _insecure_ example, index.html gets Secret values from a hardcoded Map. This should never be used in code that would be seen openly on the client side; if you published this index.html publicly on the Web, anyone could read your hardcoded Secrets. + +```js +const secrets = new Map([["MY_SECRET_KEY", "$w0rdf1sh"]]); +const Secret = () => key => secrets.get(key); +const runtime = new Runtime(Object.assign(new Library, {Secret})); +``` + +Note that our `Secret` is a function that returns the function that gets called by the cell; the [Runtime documentation](https://github.com/observablehq/runtime) says: + +> If you wish for the value of a builtin to be a function, the builtin must be defined either as a promise that resolves to a function or as a function that returns a function. Builtins may also be defined as generators for dynamic values… diff --git a/secret/index.html b/secret/index.html new file mode 100644 index 0000000..8330d6c --- /dev/null +++ b/secret/index.html @@ -0,0 +1,46 @@ + + +Embedding a notebook that uses a Secret + + + + +

Observable Example: Secret

+ +

This example demonstrates overriding Secrets with your own implementation.

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nn.call(this,null==e?null:e+"",null==t?[]:Wt.call(t,this._module._resolve,this._module),"function"==typeof n?n:Vt(n))},writable:!0,configurable:!0},delete:{value:function(){return nn.call(this,null,[],Yt)},writable:!0,configurable:!0},import:{value:function(e,t,n){arguments.length<3&&(n=t,t=e);return nn.call(this,t+"",[n._resolve(e+"")],Jt)},writable:!0,configurable:!0}}),Object.defineProperties(rn.prototype,{_copy:{value:function(e,t){e._source=this,t.set(this,e);for(const[i,a]of this._scope){var n=e._scope.get(i);if(!n||1!==n._type)if(a._definition===Jt){var r=a._inputs[0],o=r._module;e.import(r._name,i,t.get(o)||(o._source?o._copy(new rn(e._runtime,e._builtins),t):o))}else e.define(i,a._inputs.map(on),a._definition)}return e},writable:!0,configurable:!0},_resolve:{value:function(e){var t,n=this._scope.get(e);if(!n)if(n=new Kt(2,this),this._builtins.has(e))n.define(e,Vt(this._builtins.get(e)));else if(this._runtime._builtin._scope.has(e))n.import(e,this._runtime._builtin);else{try{t=this._runtime._global(e)}catch(t){return n.define(e,(r=t,function(){throw r}))}void 0===t?this._scope.set(n._name=e,n):n.define(e,Vt(t))}var r;return n},writable:!0,configurable:!0},redefine:{value:function(e){var t=this._scope.get(e);if(!t)throw new Bt(e+" is not defined");if(3===t._type)throw new Bt(e+" is defined more than once");return t.define.apply(t,arguments)},writable:!0,configurable:!0},define:{value:function(){var e=new Kt(1,this);return e.define.apply(e,arguments)},writable:!0,configurable:!0},derive:{value:function(e,t){var n=new rn(this._runtime,this._builtins);return n._source=this,Zt.call(e,(function(e){"object"!=typeof e&&(e={name:e+""}),null==e.alias&&(e.alias=e.name),n.import(e.name,e.alias,t)})),Promise.resolve().then((()=>{const e=new Set([this]);for(const t of e)for(const n of t._scope.values())if(n._definition===Jt){const t=n._inputs[0]._module,r=t._source||t;if(r===this)return void console.warn("circular module definition; ignoring");e.add(r)}this._copy(n,new Map)})),n},writable:!0,configurable:!0},import:{value:function(){var e=new Kt(1,this);return e.import.apply(e,arguments)},writable:!0,configurable:!0},value:{value:async function(e){var t=this._scope.get(e);if(!t)throw new Bt(e+" is not defined");t._observer===Gt&&(t._observer=!0,this._runtime._dirty.add(t));return await this._runtime._compute(),t._promise},writable:!0,configurable:!0},variable:{value:function(e){return new Kt(1,this,e)},writable:!0,configurable:!0},builtin:{value:function(e,t){this._builtins.set(e,t)},writable:!0,configurable:!0}});const an="function"==typeof requestAnimationFrame?requestAnimationFrame:setImmediate;var sn={},ln={};function un(e=new It,t=wn){var n=this.module();if(Object.defineProperties(this,{_dirty:{value:new Set},_updates:{value:new Set},_computing:{value:null,writable:!0},_init:{value:null,writable:!0},_modules:{value:new Map},_variables:{value:new Set},_disposed:{value:!1,writable:!0},_builtin:{value:n},_global:{value:t}}),e)for(var r in e)new Kt(2,n).define(r,[],e[r])}function cn(e){const t=new Set(e._inputs);for(const n of t){if(n===e)return!0;n._inputs.forEach(t.add,t)}return!1}function dn(e){++e._indegree}function fn(e){--e._indegree}function hn(e){return e._promise.catch(e._rejector)}function pn(e){return new Promise((function(t){e._invalidate=t}))}function mn(e,t){let n,r,o="function"==typeof IntersectionObserver&&t._observer&&t._observer._node,i=!o,a=Yt,s=Yt;return o&&(r=new IntersectionObserver((([e])=>(i=e.isIntersecting)&&(n=null,a()))),r.observe(o),e.then((()=>(r.disconnect(),r=null,s())))),function(e){return i?Promise.resolve(e):r?(n||(n=new Promise(((e,t)=>(a=e,s=t)))),n.then((()=>e))):Promise.reject()}}function vn(e){e._invalidate(),e._invalidate=Yt,e._pending();var t=e._value,n=++e._version,r=null,o=e._promise=Promise.all(e._inputs.map(hn)).then((function(o){if(e._version===n){for(var i=0,a=o.length;it._reachable?this._updates.add(t):n{e._invalidate(),e._version=NaN}))},writable:!0,configurable:!0},module:{value:function(e,t=Yt){let n;if(void 0===e)return(n=this._init)?(this._init=null,n):new rn(this);if(n=this._modules.get(e),n)return n;this._init=n=new rn(this),this._modules.set(e,n);try{e(this,t)}finally{this._init=null}return n},writable:!0,configurable:!0},fileAttachments:{value:function(e){return Object.assign((t=>{const n=e(t+="");if(null==n)throw new Error(`File not found: ${t}`);return new FileAttachment(n,t)}),{prototype:FileAttachment.prototype})},writable:!0,configurable:!0}});export{le as Inspector,It as Library,un as Runtime,Bt as RuntimeError};