Added bid adapter for seedtag

[cabama]

Type of change

• Bugfix
• Feature
• New bidder adapter
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Does this change affect user-facing APIs or examples documented on http://prebid.org?
• Other

Description of change

Adding new bid adapter for seedtag

• test parameters for validating bids

{
  bidder: 'seedtag',
  params: {
    publisherId: '0000-0000-01',          // required
    adUnitId: '0000',                               // required
    placement: 'banner',                        // required
    adPosition: 0                                    // optional
  }
}

Be sure to test the integration with your adserver using the Hello World sample page.

• contact email of the adapter’s maintainer: prebid@seedtag.com
• official adapter submission

For any changes that affect user-facing APIs or example code documented on http://prebid.org, please provide:

Link to docs PR

Other information

[sumit116]

Hi @cabama,
Thanks for submitting your adaptor. You need to pass vastUrl in the bid object in your adaptor file like this vastUrl: rtbBid.rtb.video.asset_url. vastUrl is a mandatory field for instream videos. Please refer appnexusBidAdapter.js for more info.

[cabama]

From what we have seen in the response documentation our understanding was that vastUrl is not mandatory if the vastXml field is returned. Is this still the case or is vastUrl required?

[sumit116]

It seems like vastUrl is not mandatory as per the docs. It requires cacheUrl if vastXml is passed. There are console errors when we run the adaptor and as per discussion with @jpanchal, it seems like the errors need not be handled by the adaptor.

[sumit116]

Tested the adaptor on hello_world page and all unit tests have passed. Test coverage of the adaptor is 80%. The changes are working well against all parameters listed in https://github.com/prebid/Prebid.js/blob/master/PR_REVIEW.md, hence approving the PR.