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Nicer error when image tag isn't found

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This commit is contained in:
Pagan Gazzard 2015-04-07 17:20:14 +01:00 committed by Pablo Carranza Vélez
parent 0063eaf7e7
commit 4d3a179fcb
1 changed files with 8 additions and 6 deletions
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14
src/docker-utils.coffee
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@ -18,7 +18,7 @@ exports.docker = docker
do ->
# Keep track of the images being fetched, so we don't clean them up whilst fetching.
imagesBeingFetched = 0
exports.fetchImage = (image) ->
fetchImage = (image) ->
imagesBeingFetched++
docker.createImageAsync(fromImage: image)
.then (stream) ->
@ -99,7 +99,7 @@ do ->
return not data.State.Running
# Return true if an image exists in the local docker repository, false otherwise.
exports.imageExists = imageExists = (imageId) ->
imageExists = (imageId) ->
image = docker.getImage(imageId)
image.inspectAsync().then ->
return true
@ -107,7 +107,7 @@ do ->
return false
# Get the id of an image on a given registry and tag.
exports.getImageId = getImageId = (registry, imageName, tag='latest') ->
getImageId = (registry, imageName, tag='latest') ->
request.getAsync("http://#{registry}/v1/repositories/#{imageName}/tags")
.spread (res, data) ->
if res.statusCode == 404
@ -115,10 +115,12 @@ do ->
if res.statusCode >= 400
throw new Error("Failed to get image tags of #{imageName} from #{registry}. Status code: #{res.statusCode}")
tags = JSON.parse(data)
if !tags[tag]?
throw new Error("Could not find tag #{tag} for image #{imageName}")
return tags[tag]
# Return the ids of the layers of an image.
exports.getImageHistory = getImageHistory = (registry, imageId) ->
getImageHistory = (registry, imageId) ->
request.getAsync("http://#{registry}/v1/images/#{imageId}/ancestry")
.spread (res, data) ->
if res.statusCode >= 400
@ -128,7 +130,7 @@ do ->
# Return the number of bytes docker has to download to pull this image (or layer).
# If the image is already downloaded, then 0 is returned.
exports.getImageDownloadSize = getImageDownloadSize = (registry, imageId) ->
getImageDownloadSize = (registry, imageId) ->
imageExists(imageId)
.then (exists) ->
if exists
@ -143,7 +145,7 @@ do ->
# The object returned has layer ids as keys and their download size as values.
# Download size is the size that docker will download if the image will be pulled now.
# If some layer is already downloaded, it will return 0 size for that layer.
exports.getLayerDownloadSizes = getLayerDownloadSizes = (image, tag='latest') ->
getLayerDownloadSizes = (image, tag='latest') ->
{registry, imageName} = getRegistryAndName(image)
imageSizes = {}
getImageId(registry, imageName, tag)