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Merge pull request #8 from jwplayer/feat/AD-1583
[AD-1583] Allow publisher to specify tracking urls
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
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| export function buildVastWrapper(adId, adTagUrl, impressionUrl, impressionId, errorUrl) { | ||
| let wrapperBody = getAdSystemNode('Prebid org', $$PREBID_GLOBAL$$.version); | ||
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| if (adTagUrl) { | ||
| wrapperBody += getAdTagUriNode(adTagUrl); | ||
| } | ||
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| if (impressionUrl) { | ||
| wrapperBody += getImpressionNode(impressionUrl, impressionId); | ||
| } | ||
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| if (errorUrl) { | ||
| wrapperBody += getErrorNode(errorUrl); | ||
| } | ||
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| return getVastNode(getAdNode(getWrapperNode(wrapperBody), adId), '4.2'); | ||
| } | ||
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| export function getVastNode(body, vastVersion) { | ||
| return getNode('VAST', body, { version: vastVersion }); | ||
| } | ||
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| export function getAdNode(body, adId) { | ||
| return getNode('Ad', body, { id: adId }); | ||
| } | ||
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| export function getWrapperNode(body) { | ||
| return getNode('Wrapper', body); | ||
| } | ||
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| export function getAdSystemNode(system, version) { | ||
| return getNode('AdSystem', system, { version }); | ||
| } | ||
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| export function getAdTagUriNode(adTagUrl) { | ||
| return getUrlNode('VASTAdTagURI', adTagUrl); | ||
| } | ||
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| export function getImpressionNode(pingUrl, id) { | ||
| return getUrlNode('Impression', pingUrl, { id }); | ||
| } | ||
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| export function getErrorNode(pingUrl) { | ||
| return getUrlNode('Error', pingUrl); | ||
| } | ||
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| // Helpers | ||
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| function getUrlNode(labelName, url, attributes) { | ||
| const body = `<![CDATA[${url}]]>`; | ||
| return getNode(labelName, body, attributes); | ||
| } | ||
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| function getNode(labelName, body, attributes) { | ||
| const openingLabel = getOpeningLabel(labelName, attributes); | ||
| return `<${openingLabel}>${body}</${labelName}>`; | ||
| } | ||
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| /* | ||
| attributes is a KVP Object. | ||
| */ | ||
| function getOpeningLabel(name, attributes) { | ||
| if (!attributes) { | ||
| return name; | ||
| } | ||
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| return Object.keys(attributes).reduce((label, key) => { | ||
| const value = attributes[key]; | ||
| if (!value) { | ||
| return label; | ||
| } | ||
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| return label + ` ${key}="${value}"`; | ||
| }, name); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| import { getErrorNode, getImpressionNode, buildVastWrapper } from './vastXmlBuilder.js'; | ||
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| export const XML_MIME_TYPE = 'application/xml'; | ||
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| export function VastXmlEditor(xmlUtil_) { | ||
| const xmlUtil = xmlUtil_; | ||
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| function getVastXmlWithTrackingNodes(vastXml, impressionUrl, impressionId, errorUrl) { | ||
| const impressionDoc = getImpressionDoc(impressionUrl, impressionId); | ||
| const errorDoc = getErrorDoc(errorUrl); | ||
| if (!impressionDoc && !errorDoc) { | ||
| return vastXml; | ||
| } | ||
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| const vastXmlDoc = xmlUtil.parse(vastXml); | ||
| const nodes = vastXmlDoc.querySelectorAll('InLine,Wrapper'); | ||
| const nodeCount = nodes.length; | ||
| for (let i = 0; i < nodeCount; i++) { | ||
| const node = nodes[i]; | ||
| // A copy of the child is required until we reach the last node. | ||
| const requiresCopy = i < nodeCount - 1; | ||
| appendChild(node, impressionDoc, requiresCopy); | ||
| appendChild(node, errorDoc, requiresCopy); | ||
| } | ||
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| return xmlUtil.serialize(vastXmlDoc); | ||
| } | ||
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| return { | ||
| getVastXmlWithTrackingNodes, | ||
| buildVastWrapper | ||
| } | ||
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| function getImpressionDoc(impressionUrl, impressionId) { | ||
| if (!impressionUrl) { | ||
| return; | ||
| } | ||
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| const impressionNode = getImpressionNode(impressionUrl, impressionId); | ||
| return xmlUtil.parse(impressionNode); | ||
| } | ||
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| function getErrorDoc(errorUrl) { | ||
| if (!errorUrl) { | ||
| return; | ||
| } | ||
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| const errorNode = getErrorNode(errorUrl); | ||
| return xmlUtil.parse(errorNode); | ||
| } | ||
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| function appendChild(node, child, copy) { | ||
| if (!child) { | ||
| return; | ||
| } | ||
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| const doc = copy ? child.cloneNode(true) : child; | ||
| node.appendChild(doc.documentElement); | ||
| } | ||
| } | ||
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| function XMLUtil() { | ||
| let parser; | ||
| let serializer; | ||
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| function getParser() { | ||
| if (!parser) { | ||
| // DOMParser instantiation is costly; instantiate only once throughout Prebid lifecycle. | ||
| parser = new DOMParser(); | ||
| } | ||
| return parser; | ||
| } | ||
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| function getSerializer() { | ||
| if (!serializer) { | ||
| // XMLSerializer instantiation is costly; instantiate only once throughout Prebid lifecycle. | ||
| serializer = new XMLSerializer(); | ||
| } | ||
| return serializer; | ||
| } | ||
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| function parse(xmlString) { | ||
| return getParser().parseFromString(xmlString, XML_MIME_TYPE); | ||
| } | ||
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| function serialize(xmlDoc) { | ||
| return getSerializer().serializeToString(xmlDoc); | ||
| } | ||
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| return { | ||
| parse, | ||
| serialize | ||
| }; | ||
| } | ||
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| export function vastXmlEditorFactory() { | ||
| return VastXmlEditor(XMLUtil()); | ||
| } |
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