2c:null 2d:["$","title",null,{"children":"Serverless Cell Tests | Endpoint Services | Observable"}] 32:T5da,webpage = deploy( "social_link", async (req, res) => { res.header("Content-Type", "text/html"); const title = "Serverless cells"; const description = "Observable cells as serverless hosts."; const image = await FileAttachment("PreviewServerlessCells.png").url(); const link = "https://observablehq.com/@tomlarkworthy/serverside-cells"; // Hypertext literal does not support html, head and body tags. // So we render the head and body content using the html template but // interpolate into a vanilla HTML string. res.send( ` ${ html` ${title} `.innerHTML } ${ html`

${title}

${description}

`.innerHTML } ` ); }, { reusable: true, region: region } )33:[{"id":"f66616596d81ff0717d6e08454566d311c636aae5f2383f8599e3767ab5c91f0ee2ceb3e1244872b703708f02177ca74c707e6c422db21ec208e03075855df12","href":"https://static.observableusercontent.com/files/f66616596d81ff0717d6e08454566d311c636aae5f2383f8599e3767ab5c91f0ee2ceb3e1244872b703708f02177ca74c707e6c422db21ec208e03075855df12","name":"logo.png","type":"image/png","lastModified":1616351578190.905,"size":70087},{"id":"0b797b66fdbead75a0a4046e1d201066e13151c42dff566cc70e8045d307a601567bb41aa7a2e35de2948aa02e7d1edea836d049cbfa220e5491f3486ac962ef","href":"https://static.observableusercontent.com/files/0b797b66fdbead75a0a4046e1d201066e13151c42dff566cc70e8045d307a601567bb41aa7a2e35de2948aa02e7d1edea836d049cbfa220e5491f3486ac962ef","name":"PreviewServerlessCells.png","type":"image/png","lastModified":1616351578190.905,"size":126551},{"id":"dfb3314f7289de45d0b83cb4455c0a7cdc3aacbf3b79f7b7d608b5b2959ee436931198f212c6a74386e019b616383dec98fe801601c551493686ce482789e433","href":"https://static.observableusercontent.com/files/dfb3314f7289de45d0b83cb4455c0a7cdc3aacbf3b79f7b7d608b5b2959ee436931198f212c6a74386e019b616383dec98fe801601c551493686ce482789e433","name":"ServersideCells.png","type":"image/png","lastModified":1616351578190.905,"size":21726},{"id":"60d4ca69fed9f57d135d2784c0afeba63568ab00be1304592966277256857787c9b9dd4dc7049b81be32369d69c4a2a60cc258fb252fc171b72ae298d04a63f7","href":"https://static.observableusercontent.com/files/60d4ca69fed9f57d135d2784c0afeba63568ab00be1304592966277256857787c9b9dd4dc7049b81be32369d69c4a2a60cc258fb252fc171b72ae298d04a63f7","name":"PreviewServerlessCells@1.png","type":"image/png","lastModified":1616351578190.905,"size":335166}] 30:{"id":"1feab0d1a1e71ecc","slug":"serverless-cell-tests","title":"Serverless Cell Tests","thumbnail":"ae22c6eff5f5cf2117bdac201efa8c3576bd54bc87407766f19e979c7a534601","access_level":"unlisted","create_time":"$D2021-03-21T18:32:58.190Z","update_time":"$D2022-08-11T06:29:20.413Z","view_time":null,"first_public_time":null,"has_unpublished_edits":null,"fork":{"id":"dff1e917c89f5e76","slug":"serverless-cells","title":"Serverless Cells","owner":{"id":"8d94490bed468d92","login":"endpointservices","name":"Endpoint Services"}},"stars":0,"starred":false,"owner":{"type":"team","id":"8d94490bed468d92","login":"endpointservices","name":"Endpoint Services","avatar_url":"https://avatars-next.observableusercontent.com/aa238f4bd0be02bb2364438ff6bfe17b74a7a58f5c04aa1a84d29dddc79bc15e","tier":"starter_2024","bio":"Extending Observable to the backend with a custom serverless runtime.\n\nInnovative live-coding workflows against production traffic."},"version":1733,"publish_version":1733,"role":null,"authored":false,"authors":[{"type":"individual","id":"5215f6ec4a999d40","login":"tomlarkworthy","name":"Tom Larkworthy","avatar_url":"https://avatars-next.observableusercontent.com/47327a8bc1966f2186dcb3ebf4b7ee6e4e7ab9a5c2a07405aff57200ea778f71","tier":null,"bio":"Tech Lead at Taktile. ex Firebase, Google.\n🦋 larkworthy.bsky.social"}],"members":[{"type":"individual","id":"5215f6ec4a999d40","login":"tomlarkworthy","name":"Tom Larkworthy","avatar_url":"https://avatars-next.observableusercontent.com/47327a8bc1966f2186dcb3ebf4b7ee6e4e7ab9a5c2a07405aff57200ea778f71","tier":null,"role":"editor"}],"comments":[{"id":"1dac3d52507720ef","reply_to_id":null,"content":"public auth code: jvjC6aazrlTlw_63P0vx","create_time":"$D2022-02-10T09:59:48.377Z","update_time":null,"resolved":false,"user":{"type":"individual","id":"5215f6ec4a999d40","login":"tomlarkworthy","name":"Tom Larkworthy","avatar_url":"https://avatars-next.observableusercontent.com/47327a8bc1966f2186dcb3ebf4b7ee6e4e7ab9a5c2a07405aff57200ea778f71","tier":null}},{"id":"6cb47c7e9dafe97a","reply_to_id":null,"content":"public auth code: MARJKO3hiqqkJx1Nh1wX","create_time":"$D2022-02-10T10:05:56.754Z","update_time":null,"resolved":false,"user":{"type":"individual","id":"5215f6ec4a999d40","login":"tomlarkworthy","name":"Tom Larkworthy","avatar_url":"https://avatars-next.observableusercontent.com/47327a8bc1966f2186dcb3ebf4b7ee6e4e7ab9a5c2a07405aff57200ea778f71","tier":null}},{"id":"0991fddf04a69102","reply_to_id":null,"content":"public auth code: 7CGOdTOJXz1R0h9DQfaW","create_time":"$D2022-02-10T10:45:39.993Z","update_time":null,"resolved":false,"user":{"type":"individual","id":"5215f6ec4a999d40","login":"tomlarkworthy","name":"Tom Larkworthy","avatar_url":"https://avatars-next.observableusercontent.com/47327a8bc1966f2186dcb3ebf4b7ee6e4e7ab9a5c2a07405aff57200ea778f71","tier":null}}],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":0,"collection":null,"type":"notebook","body":{"titling":"auto","title":"Serverless Cell Tests","cells":[{"id":224,"value":"md`\n# Serverless Cell Tests\n\n

\n\nTest suite for [Serverless Cells](https://observablehq.com/@endpointservices/serverless-cells). Documents examples of working behaviour.\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1402,"value":"md`## Automated Tests`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1604,"value":"viewof region = Inputs.radio([\"europe-west4\", \"europe-west1\", \"us-central1\"], {\n value: \"europe-west1\"\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1681,"value":"html`${[\"europe-west4\", \"europe-west1\", \"us-central1\"].map(\n (region) =>\n html`Diagnostics from ${region}
`\n)}`","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1419,"value":"import { deploy, getContext, Response } from \"@endpointservices/webcode\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":677,"value":"viewof ci = createSuite({\n name: \"Serverless cell tests\",\n timeout_ms: 20000\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":401,"value":"md `\n## Example - referencing cell values\n\nHere is some data we wish to serve an a random cell.\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":0,"value":"localValue = \"hello dsadasda is from another cell yo yo\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":408,"value":"md`\n### Creating a handler\n\nOur handler serves our value as JSON using _res.json(localValue)_. Handlers can reference other cells just like normal.\n\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":471,"value":"md`### Deploy the handler\nWe create a named cell \"remote_cell_link\" and also hint the deploymentFunction the name of the cell. The function responds with a link you can click on, call with curl _etc_!\n\nNOTE: THE BACKEND READS THE CURRENT **PUBLISHED** (or linked shared) NOTEBOOK. So if you make changes remember to republish the notebook otherwise the notebook will be hitting a previous version.\n\n`\n","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1627,"value":"region","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":8,"value":"remote_cell_link = {\n return deploy(\n \"remote_cell\",\n (req, res) => {\n res.json(localValue);\n },\n {\n region: region,\n host: \"webcode.run\"\n }\n );\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":481,"value":"md` ### Test it\nTo prove it works we issue a fetch command. Look! That url is serving the value we set at the beginning!\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":167,"value":"example1_response = (await fetch(remote_cell_link.href)).json()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":681,"value":"ci.test(\"Example 1 reponse matches localValue\", () => {\n expect(example1_response).toBe(localValue);\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1089,"value":"md`## Example - the *default* deployment for small URLs\n\nSometimes a notebook has a single serverless cell with multiple API routes. We can minimize the size of the URL by calling the deployed function _\"default\"_\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1099,"value":"default_url_example = {\n const link = deploy(\n \"default\",\n async (req, res) => {\n res.send(\"You can make small URLs with the default handler\");\n },\n {\n reusable: true,\n region: region\n }\n );\n return html`${link.href}`;\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":486,"value":"md`## Example - error propagation\n\nIf you throw an error the URL will serve status 500 and the message (of course if you don't like this you can catch your own errors and do your own thing)\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":219,"value":"buggy_remote_cell_link = deploy(\n \"buggy_remote_cell\",\n async (req, res) => {\n throw Error(\"Ooops\");\n },\n {\n reusable: true,\n region: region\n }\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":497,"value":"md`Calling this buggy URL:`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":222,"value":"example2_response = {\n const result = await fetch(buggy_remote_cell_link.href);\n return {\n status: result.status,\n text: await result.text()\n };\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":692,"value":"ci.test(\"Example 2 reponse status is 500\", () => {\n expect(example2_response.status).toBe(500);\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":699,"value":"ci.test(\"Example 2 reponse includes error message\", () => {\n expect(example2_response.text).toEqual(expect.stringContaining(\"Ooops\"))\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":513,"value":"md`## Example - serving a webpage\n\nServerside rendering with the wonderful hypertext literal anyone?\n\n![Serverside rendering](${await FileAttachment(\"ServersideCells.png\").url()})\n\nWith control over the meta payload we can make a much better social sharing preview, and control all the redirection behaviour.\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":515,"value":"import {html} from \"@observablehq/htl\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":522,"value":"$32","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":727,"value":"example_injecting_secrets = md`## Example - Injecting Secrets \n\nIntegrating with 3rd party APIs often require storing an OAuth client secret. We are able to inject secrets into the handler. Note, secrets are owned by the author and cannot be accessed by other notebooks. So if you fork this page, this example will fail for you. Note the prefix matches the usercontent subdomain.\n\nYou can set secrets with [secret-manager](https://observablehq.com/@tomlarkworthy/secret-manager)\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":731,"value":"example_secrets = deploy(\n \"example_secrets\",\n (req, res, context) => {\n res.send(context.secrets[\"endpointservices_example_secret\"]);\n },\n {\n secrets: [\"endpointservices_example_secret\"],\n region: region\n }\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":739,"value":"ci.test(\n \"Example 4 example secret is 'correct horse battery staple'\",\n async () => {\n const response = await fetch(example_secrets.href);\n expect(response.status).toBe(200);\n expect(await response.text()).toBe(\"correct horse battery staple\");\n }\n)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1251,"value":"md`## Example - Testing execution context\n\nYou can tell if you are running serverless or not by checking the context, you can also find out the notebook when availible.\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1249,"value":"example_getContext = deploy(\n \"example_getContext\",\n (req, res) => {\n res.send(getContext()); // Use of global getContext() function\n },\n {\n region: region\n }\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1255,"value":"ci.test(\"Example 5 getContext()\", async () => {\n expect(await (await fetch(example_getContext.href)).json()).toEqual({\n namespace: \"endpointservices\",\n secrets: {},\n serverless: true,\n notebook: \"serverless-cell-tests\"\n });\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1063,"value":"md`## Example of CDN`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":981,"value":"endpoint_with_CDN = deploy(\n \"endpoint_with_CDN\",\n (req, res, context) => {\n res.header(\"Cache-Control\", \"public, max-age=0, s-maxage=99999\"); // Cache in shared cache (CDN)\n res.send(new Date());\n },\n {\n region: region\n }\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":979,"value":"ci.test(\"Example 6 Enable cache for insane performance\", async () => {\n const response = await fetch(endpoint_with_CDN.href);\n return expect(response.status).toBe(200);\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":910,"value":"test_end = ci.test(\"Reference: res.status('204').end() responds\", async () => {\n const link = await deploy(\n \"test_end\",\n (req, res) => {\n res.status(204).end();\n },\n {\n cell: \"test_end\",\n region: region\n }\n );\n return expect(await (await fetch(link.href)).status).toBe(204);\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1376,"value":"md`## Regions \n\nYou can elect to run the code in us-central1 (Iowa), europe-west4 (Netherlands), or asia-east1 (Taiwan). The default is \"europe-west4\". Fastest seems to be \"us-central1\" (see the [latency monitor](https://observablehq.com/@tomlarkworthy/serverless-cell-latency-monitor))\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1380,"value":"europe_west1 = deploy(\n \"europe-west1\",\n async (req, res) => {\n res.send(\"Howdy!\");\n },\n {\n region: \"europe-west1\"\n }\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1386,"value":"ci.test(\"Example 6.1: Regions\", async () => {\n await expect((await fetch(europe_west1.href)).status).toBe(200);\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1314,"value":"md`## Signed Cookie Support`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1167,"value":"ci.test(\"Example 7: Cookie signing same as nodejs Express (disabled)\", () => {\n return;\n /* Test program to be run with node.js\n const app = require('express')();\n app.use(require('cookie-parser')(\"secret\"))\n app.get('/', (req, res) => {\n res.cookie(\"value\", \"value\", {signed: true, maxAge:1000, httpOnly: true})\n res.end();\n })\n app.listen(8080, () => {})\n */\n // Curling the nodejs server (curl localhost:8080 -v) contains line:-\n // Set-Cookie: value=s%3Avalue.UOA%2BvmW%2BmLuL8RuiyJLVTAeayisNOwFidpxtdXolQ08; Max-Age=1; Path=/; Expires=Sun, 31 Jan 2021 09:04:51 GMT; HttpOnly\n const headerValue = new Response({\n secret: \"secret\"\n }).cookie(\"value\", \"value\", { signed: true, maxAge: 1000, httpOnly: true })\n ._headers[\"Set-Cookie\"];\n // Test the encryption is the same\n expect(headerValue).toMatch(\n \"value=s%3Avalue.UOA%2BvmW%2BmLuL8RuiyJLVTAeayisNOwFidpxtdXolQ08; Max-Age=1; Path=/; Expires=\"\n );\n // Test the feature switches work\n expect(headerValue).toMatch(\"; HttpOnly\");\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1318,"value":"binary = md`## Serving Binary data (e.g. images)\n\nthe _res.send()_ supports using an arrayBuffer as the arg.\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1322,"value":"pngLink = deploy(\n \"png\",\n async (req, res) => {\n res.header(\"content-type\", \"image/png\");\n const blob = await FileAttachment(\"logo.png\").blob();\n const arrayBuffer = await blob.arrayBuffer();\n res.send(arrayBuffer);\n },\n {\n region: region\n }\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1326,"value":"pngElement = new Promise((resolve) => {\n let img = html`

{\n img.err = true;\n resolve(img);\n }} onload=${() => resolve(img)} />`;\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1332,"value":"ci.test(\n \"Example 8: Images can be served as binary data\",\n async () => {\n expect(pngElement.err).toBeUndefined();\n },\n {\n region: region\n }\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1431,"value":"md`### Cell Modifiers and chaining calls\n\nOnly \"terminal\" cells can be called by other cells\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1444,"value":"external_to_terminal = deploy(\"external\", async (req, res) => {\n try {\n res.send(await (await fetch(\"https://endpointservice.web.app/notebooks/@endpointservices/serverless-cell-user-agents/deploys/terminal-ua/mods/T\")).text());\n } catch (err) {\n res.send(err.message)\n }\n}, {\n region: region,\n modifiers: [\"external\"]\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1450,"value":"ci.test(\n \"Example 9: An external can call a cell with modifier terminal\",\n async () => {\n expect(await (await fetch(external_to_terminal.href)).text()).toBe(\n \"observablehq.com/@endpointservices/serverless-cells\"\n );\n }\n)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1466,"value":"orchestrator_to_external = deploy(\n \"orchestrator\",\n async (req, res) => {\n try {\n res.send(\n await (\n await fetch(\n \"https://endpointservice.web.app/notebooks/@endpointservices/serverless-cell-user-agents/deploys/external-ua/mods/T\"\n )\n ).text()\n );\n } catch (err) {\n res.send(err.message);\n }\n },\n {\n region: region,\n modifiers: [\"orchestrator\"]\n }\n)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1471,"value":"ci.test(\n \"Example 10: An orchestrator can call a cell with modifier external\",\n async () => {\n expect(await (await fetch(orchestrator_to_external.href)).text()).toBe(\n \"observablehq.com/@endpointservices/serverless-cells O\"\n );\n }\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1501,"value":"ci.test(\"Conformance: name is URI encoded: foo/bar\", async () => {\n throw new Error(\"Somehow this causes loops!\");\n expect(\n await (\n await fetch(deploy(\"foo/bar\", (req, res) => res.send(\"OK: foo/bar\")).href)\n ).text()\n ).toBe(\"OK: foo/bar\");\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1521,"value":"ci.test(\"Conformance: name is URI encoded: foo\", async () => {\n expect(\n await (\n await fetch(\n deploy(\"foo\", (req, res) => res.send(\"OK: foo\"), { region }).href\n )\n ).text()\n ).toBe(\"OK: foo\");\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1551,"value":"metadata_token = deploy(\"metadata_token\", async (req, res) => {\n try {\n const response = await fetch(\"http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/default/token\", {\n headers: {\n \"Metadata-Flavor\": \"Google\"\n }\n })\n res.status(response.status).send(await response.text())\n } catch (err) {\n res.status(500).send(err.message)\n }\n}, {region})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1557,"value":"ci.test(\"Security: Cannot get to metadata server\", async () => {\n expect(await (await fetch(metadata_token.href)).text()).toBe(\n \"Failed to fetch\"\n );\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1567,"value":"md`#### Streaming`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1573,"value":"streamingResponse = deploy(\n \"streamingResponse\",\n async (req, res) => {\n res.write(\"w\");\n res.write(\"r\");\n res.write(\"i\");\n res.write(\"t\");\n res.write(\"e\");\n res.end();\n },\n {\n region: region\n }\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1571,"value":"ci.test(\"Streaming: write works\", async () => {\n expect(await (await fetch(streamingResponse.href)).text()).toBe(\"write\");\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1601,"value":"deploy(\n \"redirect\",\n (req, res) => {\n res.redirect(302, pngLink.href);\n },\n {\n region\n }\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1600,"value":"ci.test(\"Example 11: Redirects\", async () => {\n expect(await (await fetch(orchestrator_to_external.href)).text()).toBe(\n \"observablehq.com/@endpointservices/serverless-cells O\"\n );\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1637,"value":"ci.test(\"Context fields are populated\", async () => {\n const payload = await (\n await fetch(\n deploy(\"contextFields\", (req, res) => res.json(req), {\n reusable: true,\n region\n }).href\n )\n ).json();\n\n expect(payload).toHaveProperty(\"headers\");\n expect(payload).toHaveProperty(\"ip\");\n expect(payload).toHaveProperty(\"url\");\n expect(payload).toHaveProperty(\"method\");\n expect(payload).toHaveProperty(\"query\");\n expect(payload).toHaveProperty(\"baseUrl\");\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":671,"value":"import { createSuite, expect } from '@tomlarkworthy/testing'","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1695,"value":"import { footer } from \"@endpointservices/footer-with-backups\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1699,"value":"footer","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W33","stdlib":"1"}} 31:"$30:body"