From d8669d0c4b05ca7236c9c7c132c1a1fd70e0afa8 Mon Sep 17 00:00:00 2001 From: Rupinder Hayer <25388689+rupinderrr@users.noreply.github.com> Date: Mon, 7 Mar 2022 14:04:59 -0800 Subject: [PATCH] added validation, queries to read and write, passed all 3 tests --- .gitignore | 145 ++ package-lock.json | 1470 ++++++++++++++++- src/read-data.js | 58 +- src/write-data.js | 42 +- test/code-sample-verification-test.js | 101 +- .../shared-local-instance.db | Bin 0 -> 26624 bytes 6 files changed, 1758 insertions(+), 58 deletions(-) create mode 100644 .gitignore create mode 100644 test/dynamodb-local/dynamodb_local_latest_20191209/shared-local-instance.db diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..052791a --- /dev/null +++ b/.gitignore @@ -0,0 +1,145 @@ +# 401 JS +db +.env +temp +build +memory + +# Created by https://www.gitignore.io/api/vim,osx,node,linux,windows +### Linux ### +*~ + +# temporary files which can be created if a process still has a handle open of a deleted file +.fuse_hidden* + +# KDE directory preferences +.directory + +# Linux trash folder which might appear on any partition or disk +.Trash-* + +# .nfs files are created when an open file is removed but is still being accessed +.nfs* + +### Node ### +# Logs +logs +*.log +npm-debug.log* +yarn-debug.log* +yarn-error.log* + +# Runtime data +pids +*.pid +*.seed +*.pid.lock + +# Directory for instrumented libs generated by jscoverage/JSCover +lib-cov + +# Coverage directory used by tools like istanbul +coverage + +# nyc test coverage +.nyc_output + +# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files) +.grunt + +# Bower dependency directory (https://bower.io/) +bower_components + +# node-waf configuration +.lock-wscript + +# Compiled binary addons (http://nodejs.org/api/addons.html) +build/Release + +# Dependency directories +node_modules/ +jspm_packages/ + +# Typescript v1 declaration files +typings/ + +# Optional npm cache directory +.npm + +# Optional eslint cache +.eslintcache + +# Optional REPL history +.node_repl_history + +# Output of 'npm pack' +*.tgz + +# Yarn Integrity file +.yarn-integrity + +# dotenv environment variables file + + +### OSX ### +*.DS_Store +.AppleDouble +.LSOverride + +# Icon must end with two \r +Icon + +# Thumbnails +._* + +# Files that might appear in the root of a volume +.DocumentRevisions-V100 +.fseventsd +.Spotlight-V100 +.TemporaryItems +.Trashes +.VolumeIcon.icns +.com.apple.timemachine.donotpresent + +# Directories potentially created on remote AFP share +.AppleDB +.AppleDesktop +Network Trash Folder +Temporary Items +.apdisk + +### Vim ### +# swap +[._]*.s[a-v][a-z] +[._]*.sw[a-p] +[._]s[a-v][a-z] +[._]sw[a-p] +# session +Session.vim +# temporary +.netrwhist +# auto-generated tag files +tags + +### Windows ### +# Windows thumbnail cache files +Thumbs.db +ehthumbs.db +ehthumbs_vista.db + +# Folder config file +Desktop.ini + +# Recycle Bin used on file shares +$RECYCLE.BIN/ + +# Windows Installer files +*.cab +*.msi +*.msm +*.msp + +# Windows shortcuts +*.lnk + +# End of https://www.gitignore.io/api/vim,osx,node,linux,windows \ No newline at end of file diff --git a/package-lock.json b/package-lock.json index 14bbfb4..55564b0 100644 --- a/package-lock.json +++ b/package-lock.json @@ -1,8 +1,1476 @@ { "name": "nwea-platform-team-interview-code-sample", "version": "1.0.0", - "lockfileVersion": 1, + "lockfileVersion": 2, "requires": true, + "packages": { + "": { + "name": "nwea-platform-team-interview-code-sample", + "version": "1.0.0", + "license": "UNLICENSED", + "dependencies": { + "aws-sdk": "2.586.0", + "aws-xray-sdk": "2.5.0" + }, + "devDependencies": { + "chai": "4.2.0", + "mocha": "6.2.2", + "uuid": "3.3.3" + } + }, + "node_modules/@types/body-parser": { + "version": "1.17.1", + "resolved": "https://registry.npmjs.org/@types/body-parser/-/body-parser-1.17.1.tgz", + "integrity": 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'SchoolStudents'; -const studentLastNameGsiName = 'studentLastNameGsi'; +const tableName = "SchoolStudents"; +const studentLastNameGsiName = "studentLastNameGsi"; /** * The entry point into the lambda @@ -19,11 +19,49 @@ const studentLastNameGsiName = 'studentLastNameGsi'; * @param {string} [event.studentLastName] */ exports.handler = (event) => { + const { schoolId, studentId, studentLastName } = event; + const params = { + TableName: tableName, + Limit: 5, + }; // TODO use the AWS.DynamoDB.DocumentClient to write a query against the 'SchoolStudents' table and return the results. - // The 'SchoolStudents' table key is composed of schoolId (partition key) and studentId (range key). + const getResults = async (params, output = []) => { + const { LastEvaluatedKey, Items } = await dynamodb.query(params).promise(); + + if (Items) { + output.push(...Items); + } + if (!LastEvaluatedKey) { + return output; + } + + return getResults( + { ...params, ExclusiveStartKey: LastEvaluatedKey }, + output + ); + }; + // The 'SchoolStudents' table key is composed of schoolId (partition key) and studentId (range key). // TODO (extra credit) if event.studentLastName exists then query using the 'studentLastNameGsi' GSI and return the results. + if (studentLastName) { + params.IndexName = studentLastNameGsiName; + params.KeyConditionExpression = "studentLastName = :studentLastName"; + params.ExpressionAttributeValues = { + ":studentLastName": studentLastName, + }; + + return getResults(params); + } + + params.KeyConditionExpression = [ + ...(schoolId ? ["schoolId = :schoolId"] : []), + ...(studentId ? ["studentId = :studentId"] : []), + ].join(" and "); + + params.ExpressionAttributeValues = { + ...(schoolId && { ":schoolId": schoolId }), + ...(studentId && { ":studentId": studentId }), + }; - // TODO (extra credit) limit the amount of records returned in the query to 5 and then implement the logic to return all - // pages of records found by the query (uncomment the test which exercises this functionality) -}; \ No newline at end of file + return getResults(params); +}; diff --git a/src/write-data.js b/src/write-data.js index cc8bc90..7b7d061 100644 --- a/src/write-data.js +++ b/src/write-data.js @@ -1,14 +1,25 @@ -const AWS = require('aws-sdk'); +const AWS = require("aws-sdk"); const dynamodb = new AWS.DynamoDB.DocumentClient({ - apiVersion: '2012-08-10', - endpoint: new AWS.Endpoint('http://localhost:8000'), - region: 'us-west-2', + apiVersion: "2012-08-10", + endpoint: new AWS.Endpoint("http://localhost:8000"), + region: "us-west-2", // what could you do to improve performance? }); -const tableName = 'SchoolStudents'; +const tableName = "SchoolStudents"; +function validation(inputObjs, requiredProps) { + let missingProps = []; + for (prop of requiredProps) { + if (!inputObjs.hasOwnProperty(prop)) { + missingProps.push(prop); + } + } + if (missingProps.length > 0) { + throw new Error("Missing required attributes"); + } +} /** * The entry point into the lambda * @@ -22,6 +33,21 @@ const tableName = 'SchoolStudents'; */ exports.handler = (event) => { // TODO validate that all expected attributes are present (assume they are all required) - // TODO use the AWS.DynamoDB.DocumentClient to save the 'SchoolStudent' record - // The 'SchoolStudents' table key is composed of schoolId (partition key) and studentId (range key). -}; \ No newline at end of file + + const validFields = [ + "schoolId", + "schoolName", + "studentId", + "studentFirstName", + "studentLastName", + "studentGrade", + ]; + + try { + validation(event, validFields); + } catch (err) { + throw err; + } + + return dynamodb.put({ TableName: tableName, Item: event }).promise(); +}; diff --git a/test/code-sample-verification-test.js b/test/code-sample-verification-test.js index e14688e..3af1db4 100644 --- a/test/code-sample-verification-test.js +++ b/test/code-sample-verification-test.js @@ -1,27 +1,27 @@ -const chai = require('chai'); +const chai = require("chai"); const assert = chai.assert; -const uuid = require('uuid/v4'); -const localDynamoDbUtils = require('./dynamodb-local/dynamodb-local-util'); +const uuid = require("uuid/v4"); +const localDynamoDbUtils = require("./dynamodb-local/dynamodb-local-util"); // software under test -const readData = require('./../src/read-data'); -const writeData = require('./../src/write-data'); +const readData = require("./../src/read-data"); +const writeData = require("./../src/write-data"); -describe('the code sample', function () { +describe("the code sample", function () { this.timeout(10000); // This is the test that you want to pass - it('saves data to DynamoDB and then it can be read', async function () { + it("saves data to DynamoDB and then it can be read", async function () { const schoolId = uuid(); const studentId = uuid(); const schoolStudent = { schoolId: schoolId, - schoolName: 'Code Sample Academy', + schoolName: "Code Sample Academy", studentId: studentId, - studentFirstName: 'Jane', - studentLastName: 'Doe', - studentGrade: '8', + studentFirstName: "Jane", + studentLastName: "Doe", + studentGrade: "8", }; await writeData.handler(schoolStudent); @@ -32,23 +32,30 @@ describe('the code sample', function () { }; const queryResult = await readData.handler(query); - assert.isTrue(Array.isArray(queryResult), 'Expected queryResult to be of type Array'); - assert.equal(queryResult.length, 1, 'Expected to find one result'); - assert.deepEqual(queryResult[0], schoolStudent, 'Expected the query result to match what we saved'); + assert.isTrue( + Array.isArray(queryResult), + "Expected queryResult to be of type Array" + ); + assert.equal(queryResult.length, 1, "Expected to find one result"); + assert.deepEqual( + queryResult[0], + schoolStudent, + "Expected the query result to match what we saved" + ); }); // TODO (extra credit) enable this test if you implement the GSI query in src/read-data.js - it.skip('(extra credit) can query for SchoolStudent records by studentLastName', async function () { + it("(extra credit) can query for SchoolStudent records by studentLastName", async function () { const schoolId = uuid(); const studentId = uuid(); const schoolStudent = { schoolId: schoolId, - schoolName: 'NWEA Test School', + schoolName: "NWEA Test School", studentId: studentId, - studentFirstName: 'John', - studentLastName: 'Robertson', - studentGrade: '5', + studentFirstName: "John", + studentLastName: "Robertson", + studentGrade: "5", }; await writeData.handler(schoolStudent); @@ -58,23 +65,30 @@ describe('the code sample', function () { }; const queryResult = await readData.handler(query); - assert.isTrue(Array.isArray(queryResult), 'Expected queryResult to be of type Array'); - assert.equal(queryResult.length, 1, 'Expected to find one result'); - assert.deepEqual(queryResult[0], schoolStudent, 'Expected the query result to match what we saved'); + assert.isTrue( + Array.isArray(queryResult), + "Expected queryResult to be of type Array" + ); + assert.equal(queryResult.length, 1, "Expected to find one result"); + assert.deepEqual( + queryResult[0], + schoolStudent, + "Expected the query result to match what we saved" + ); }); // TODO uncomment this test if you implement retrieval of multiple pages of data - it.skip('returns all pages of data', async function () { + it("returns all pages of data", async function () { let createdRecords = 0; const schoolId = uuid(); while (createdRecords++ < 10) { await writeData.handler({ schoolId: schoolId, - schoolName: 'NWEA Test School ' + createdRecords, + schoolName: "NWEA Test School " + createdRecords, studentId: uuid(), - studentFirstName: 'Dan', - studentLastName: 'Danny the ' + createdRecords, - studentGrade: '3', + studentFirstName: "Dan", + studentLastName: "Danny the " + createdRecords, + studentGrade: "3", }); } @@ -82,40 +96,49 @@ describe('the code sample', function () { schoolId: schoolId, }; const queryResult = await readData.handler(query); - assert.isTrue(Array.isArray(queryResult), 'Expected queryResult to be of type Array'); - assert.equal(queryResult.length, 10, 'Expected to find ten results'); + assert.isTrue( + Array.isArray(queryResult), + "Expected queryResult to be of type Array" + ); + assert.equal(queryResult.length, 10, "Expected to find ten results"); }); - // This section starts the local DynamoDB database before(async function () { await localDynamoDbUtils.startLocalDynamoDB(); // create the 'SchoolStudents' DynamoDB table in the locally running database - const partitionKey = 'schoolId', rangeKey = 'studentId', - gsiPartitionKey = 'studentLastName', gsiRangeKey = 'studentFirstName'; + const partitionKey = "schoolId", + rangeKey = "studentId", + gsiPartitionKey = "studentLastName", + gsiRangeKey = "studentFirstName"; const keySchema = [ { AttributeName: partitionKey, KeyType: "HASH" }, { AttributeName: rangeKey, KeyType: "RANGE" }, ]; const attributeDefinitions = [ - { AttributeName: partitionKey, AttributeType: "S"}, + { AttributeName: partitionKey, AttributeType: "S" }, { AttributeName: rangeKey, AttributeType: "S" }, { AttributeName: gsiPartitionKey, AttributeType: "S" }, { AttributeName: gsiRangeKey, AttributeType: "S" }, ]; const gsis = [ - localDynamoDbUtils.buildGlobalSecondaryIndex('studentLastNameGsi', [ - {AttributeName: gsiPartitionKey, KeyType: "HASH"}, - {AttributeName: gsiRangeKey, KeyType: "RANGE"}]), + localDynamoDbUtils.buildGlobalSecondaryIndex("studentLastNameGsi", [ + { AttributeName: gsiPartitionKey, KeyType: "HASH" }, + { AttributeName: gsiRangeKey, KeyType: "RANGE" }, + ]), ]; - await localDynamoDbUtils.createTable('SchoolStudents', keySchema, attributeDefinitions, gsis); + await localDynamoDbUtils.createTable( + "SchoolStudents", + keySchema, + attributeDefinitions, + gsis + ); }); after(function () { localDynamoDbUtils.stopLocalDynamoDB(); }); - -}); \ No newline at end of file +}); diff --git a/test/dynamodb-local/dynamodb_local_latest_20191209/shared-local-instance.db b/test/dynamodb-local/dynamodb_local_latest_20191209/shared-local-instance.db new file mode 100644 index 0000000000000000000000000000000000000000..4978b211c07b98596b3b8592475c623a4c6fd5d3 GIT binary patch literal 26624 zcmeHP4R93Y8Qz~`!)!QF)t zkkSx}rFAGe7GL3WzX&rHN6hVceeRubAw|nftCT5&T zvNv$qz4zVkd%x#>-*123=i8QB8zL!*lH-XeN>N^{0K;+Y`xJ#?*m(Fq4*qw40NWANs6biRVN%$1i zGzY6gK`K-|tszJylT>9(Dj}h0eJvFV-WIB&T3S&;%GEES2zYEeoGMWPZ_-xvzk z1)Hm=TB%Jkm(<51sR(Lok(RehF+plPq*1u6vV>NNclr+#{a-5ph&@`=z>J3naQKh{A!*X17SWy^O zv~b;YLLJunAFIO>qhgda3`>Mzb1HtU=3=5J`2+fsjaMMe`Eit2{E*==v1(~W` zAtgYwv=qLE6b^-N9CA}jPuQ_PHUc&R0~~>3oEW>pGl`w#*7E;ujJ$h*57{1`jX=LZ zVDmz}%;hL9F2?bPh~nZFp*0?FYe}_>aJiYp*UF2#u5&n6JF8QvL?qmvl9J9T3v|26 z)t_^UGpQa{FFLETnxT$mim1i8rb;~k;21pwzHstm4F1_48vz@E0gb>&(p6%dP?Yn( z;jVr_kKZ1gjew1S9s%Y2Z|A=r5qsN4VDKPdpZ^DsukDfA2;?GQpZ{|avG;8R1`h)E z`G4^E+8(KmKrRAG{ug39F!*?-14kjkGs-!}` zQp%2X$%s*5M4Ee4-&h;GjdB`=CPzD|rp8<~CsnC-eT&qw2#8dfZKjH9MakA?6k9CK zMQ!bpYu(b)q6(J_|Jg{DY-a4uxHrr|ic$=-#?oVpHI^Qb?tp05o@`H+7+L}%-o=TE zMnYkhYL=h#rtuz|B_W;=(9+@Xqb>LNhH);VrUdtY(p-_VoN0!F{#ARZ{U*ttTN^PHHDW* zLTY9U#I{1h)U{^}V52l+uRiGAW<$xQgqc+Djx-+G(Ysvs^?zorvo~x61|0(S^S?po za(low0vQC9wK)#*zsmkNWo-`mDfyAMn^Eb%8(pJ_(ol$HiLMpwRinem!yzvt(7cR9 zniV)d&5Hs+F>1QLPQskQG@1uFSdV}fcwH_i)IQz2M;LTNWb zy2GbO658!scM~(?ty=Tl6w-|8m&VVzX3fj3$JRdd%|>!@_`^|8-m&w=nG-&cGG;4n zcMZYQURlPLk7higEcpdL?e`&uW+l-_^B#|zb_d)7Vm%&F5;;-ixG?AC=zv%9(5zbm zuejv^Ey*5Pk{L1J_3&(muzkzB{G1Jk&%Ri9>d=ELccNJj?0#%|XXBpXO|Spt;XC%R zrKojG5PQVLD^@ztL6+;4+PI{X8vGG3_eYJgPN)S%m$gY$wE+H$cIaBT&?P9Q^^oHd zE8u}k-gymjc&u`&A5#op6@~D1xw2g7GD7*W44aRUf5zV~;%&k(NCI=!nP% z*~ZJXAd6nk=jC|#Q)am}kK_q3kma<<_`@`dJbpUNLl(Q6F&@L-+g1|8x zBbHchO+aoz4#QN%1>8K%G77A+1S#YLqXNjyF_O2~a%*6k+wYSZn&A*wgd{hOATw!y zz|Dx@LJyMJBI~X33?p%jpY}i+)2vq(=m6vOLe_FVKPP)(?iCBIwvPKv%dH_V%=!VCOc)+q!TLCeH;<2{c?L!)iXOjDLx<0Qcc zrwyJ4J78*J!U7!@83=QM^NJ!b0Eli|;$W6p}QX+38 zM-d+q&k^?#abi089{FVNlHWdRARyp!OekmZS`>?QP^nglV%)Hee|+-2(zPeoT^U=q zb?n(ar?>4q{difW!)eguLGiL#w;!B-6n*|pC7G;*MPX{`{Vkj*aJwaur!n z^lyu9Uh>?M7Y+s&Jlo{iGP-$O`a_!&C3vv}1P~1P_%<`>cr8U1h8hrQ2>o=C25GFU0 z*E_Bn&Ekg3Dzob@f^w9PW=r7uWF}leyz|=i= z{l?+4e1g(^f+6_?CHVx!`2?5wY@q8RwdX7d)r} z4uHBIxwa#QqVd{knPtk#)1}N#x`Q14K%TYAPAJo+d!13;G9zP+!PZO>)SZ!EU@feA z?ul91r!eMgsC9NVS2yMZF=H5$->`-7zz^O%122cES6&j7UeayN*6t@lm$WfIcImQk ze*1a|T;5gZ))2E4b{brDE%jN%U=_SI$c(HN7O8$@1 z-Xmbl$-F-7Z5HP}?hKQ8?=rGUk8AhkoE6?Z~=wr{A)ef?rQK}0AEB_077-en?b!xLH+yA}u zcV1chNyih7e?=>geR*Q({Ns0-Mwyikbn%lv%2=INucA!fKp#h$S#c~IWlH(1tHRM! z&seDWn|TIbx%o%`d+fuK1>(McPF^Da7CUs)X>-q5=s<^ge$QwVuy$YBE6?Z~=wr{A zRU@;WQRqNsv6@H&tl>Ot*$}d+Oyy0ZU?8M9B ztDkRr_7pO|{wUj! zch|TwEyUJi>;y|U|5k{{W+7Jf@NwUsq9c)O-??|z>K8hebbj*HPq9Cl-27YVKo>mu zPce*Jr`D?&GqljhL1xAX%m$fC8tkel?P2~~;c=Te=dB4-@eSTlLr)hT=IgeeB8I(< i4w&Y@l@4^M=XVaT)9RIP^bPc}Ys@&9S=T5m&Hn?+(Z@^x literal 0 HcmV?d00001