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* Replace getPullRefName by Runtime.getPullRefPairMiloslav Trmač2018-08-02
| | | | | | | | | | | | | | | | | | This more or less reverts 9c9401a96c0b7d43dcea19c2972ef9612cc0a136 "Replace getPullRefPair with getPullRefName"; now that tests don't require us to use pullRefName, move creation of storage references deeper into the calls stack to reduce string use. ir.getSinglePullRefNameGoal is accordingly updated to ir.getSinglePullRefPairGoal, and we need to add a ~duplicate singlePullRefPairGoal; that duplication of singlePullRefNameGoal will soon be resolved by dropping singlePullRefNameGoal. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1198 Approved by: mheon
* Inline pullGoalNamesFromImageReference back into ↵Miloslav Trmač2018-08-02
| | | | | | | | | | | | | | | | | | Runtime.pullGoalFromImageReference Now that we don't need a separate pullGoalNamesFromImageReference for running tests, inline it back. This forces us to add some glue code to getSinglePullRefNameGoal and to convert between pullGoal and *pullGoal; that is temporary and will be cleaned up soon. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1198 Approved by: mheon
* Introduce getSinglePullRefNameGoalMiloslav Trmač2018-08-02
| | | | | | | | | | | | | | | | | This merely wraps the > return singlePullRefNameGoal(getPullRefName(... reference)), nil pattern which is used for almost all getPullRefName uses. For now it seems not really worth it, but it will result in shorter code (and smaller migration) after we replace getPullRefName with getPullRefPair, which can fail, again - the pullGoalNamesFromImageReference will not have to add any error handling. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1198 Approved by: mheon
* Test Runtime.pullGoalFromPossiblyUnqualifiedName instead of pullGoalNameFrom...Miloslav Trmač2018-08-02
| | | | | | | | | | | | | | Similarly to pullGoalNamesFromImageReference, use a storage.Store and test the actually created references; that is more representative, and clearly shows the impact of further normalization in storageReference (like defaulting to :latest on NameOnly references). Only modifies tests, so does not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1198 Approved by: mheon
* Test Runtime.pullGoalFromImageReference instead of ↵Miloslav Trmač2018-08-02
| | | | | | | | | | | | | | | | | | | | | | | | | pullGoalNamesFromImageReference pullGoalNamesFromImageReference has been added only to allow testing without a storage.Store, because I thought that a storage.Store can only be created by root. It turns out that non-root stores, at least good enough for reference parsing and formatting, are possible (and have existed in c/image/storage tests), so this creates such a store, and modifies the existing test to test the created c/image/storage.storageReference values instead of strings; that is more representative, and clearly shows the impact of further normalization in storageReference (like defaulting to :latest on NameOnly references). Eventually we will want to get rid of pullGoalNames / pullRefName. Only modifies tests, so does not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1198 Approved by: mheon
* Use REGISTRIES_CONFIG_PATH for all testsbaude2018-08-02
| | | | | | | | | | | | | | | We should not be using the test systems registries.conf file for integration tests. We should always use a constructed file created specifically for the integration tests or we stand to have unpredictable results. The beforeTest function now sets an environment variable pointing to a registries.conf file in the test's tempdir. That file will container docker.io as a default. The afterTest function then clears the environment variable. Signed-off-by: baude <bbaude@redhat.com> Closes: #1197 Approved by: rhatdan
* RFC: Rename runtime.pullImage to runtime.pullImageFromHeuristicSourceMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | | | | This is similar to the PushImageToHeuristicDestination RFC. The goal is to be very explicit about which functions try to heuristically guess what is the expected format of the string. Not quite "shaming" the users, but making sure they stand out. RFC: - Is this at all acceptable? Desirable? Should not change behavior (but does not add unit tests). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Introduce Runtime.pullImageFromReference, call it in Runtime.FromImageReferenceMiloslav Trmač2018-08-01
| | | | | | | | | | | FINALLY, (podman load) can pass through an ImageReference directly from loadCmd all the way to pullGoalNamesFromImageReference, making sure not to trigger the docker-like reference parsing heuristics. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* RFC: Remove unused transport name constants from libpodMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | | | | | They are not used anywhere in the packagee. Two of the values still have users in the CLI, but used only once. So, use the .Transport.Name() calls in there directly, that is likely to be cheaper (and makes the files depend directly on the transports instead of referring to them indirectly through libpod). RFC: Should not change behavior in _this_ repo, but it is an externally-observable API change. Is there any user that could notice? Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Replace Runtime.LoadFromArchive with Runtime.LoadFromArchiveReferenceMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | | | | | | | | | | | All callers of LoadFromArchive expect the input to be in the transport:name format, or create it that way. So, pass a types.ImageReference instead of a string. That requires us to add an explicit parse step in (podman pull); in (podman load) we can, instead of pasting strings, create native objects directly. Changes the error behavior of (podman pull), we no longer try heuristically parsing docker-archive:... inputs as Docker references. Also changes the string reported by (podman load) if all parsing attempts fail, to be only the path instead of dir:path. The error message itself is likely to be the same (from directory.Transport). (While at it, update a mismatched comment.) Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Rename the "image" variable to "imageName"Miloslav Trmač2018-08-01
| | | | | | | | | | | ... so that it does not shadow the libpod/image module. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Fix the heuristic for docker-archive: sources in (podman pull)Miloslav Trmač2018-08-01
| | | | | | | | | | Instead of searching for "docker-archive" anywhere in the input, only accept it at the start, and require the colon separator as well. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Split doPullImage from pullImageMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | Now that we have a pullGoal, separate determination of the goal from performing it; we will then introduce another entry point with a supplied types.ImageReference. Also remove or correct some misleading comments. Should not change behavior (but does not add unit tests). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Remove the forceCompress parameter from getCopyOptions and DRO.GetSystemContextMiloslav Trmač2018-08-01
| | | | | | | | | | | Use the parent types.SystemContext data instead. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Remove the authFile parameter from getCopyOptions and DRO.GetSystemContextMiloslav Trmač2018-08-01
| | | | | | | | | | | Use the parent types.SystemContext data instead. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Remove the signaturePolicyPath parameter from getCopyOptions and ↵Miloslav Trmač2018-08-01
| | | | | | | | | | | | | DRO.GetSystemContext Use the parent types.SystemContext data instead. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Add a *types.SystemContext parameter to getCopyOptions and DRO.GetSystemContextMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | All callers of getCopyOptions also call GetSystemContext with the same three parameters; we will want to simplify this by passing the first SystemContext to getCopyOptions, which can then inherit this data instead of so many parameters everywhere. For now, just add a *types.SystemContext parameter without using it. Should not change behavior (but does not add unit tests). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Move pullImage from Image to RuntimeMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | | | pullImage (now) only uses Image.InputName; it is really used to _create_ an Image object, based on the pull results (as is most visible in the LoadFromArchive caller), so it should not be a method on it. This also simplifies a bit the number of different kids of uses of Image.InputName; still apparently not enough to clearly document the field, though. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Do not re-parse the list of search registries just for an error messageMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | | ... when we even only count them. This eliminates a rare error case, and saves time re-reading and re-parsing the input. (We still compute registryPath redundantly, and it may get out of sync.) Should not change behavior (but does not add unit tests). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Eliminate duplicate determination whether to use search registriesMiloslav Trmač2018-08-01
| | | | | | | | | | | | Instead of duplicating the hasRegistry logic, just record whether we did use search or not. Should not change behavior (but does not add unit tests for all of it). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Eliminate the "DockerArchive means pull all refPairs" special caseMiloslav Trmač2018-08-01
| | | | | | | | | | | | Instead, encode it explicitly in pullGoal.pullAllPairs. Should not change behavior (but does not add unit tests for all of it). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Introduce struct pullGoalNamesMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | | | | | This is an intermediate version of pullGoal, which exists basically only for easier testing without containers-storage: (i.e. root access) in unit tests. Like pullGoal, we will add more members to make it useful in the future. RFC: Unlike pullGoal, the return value is *pullGoalNames, because there are quite a few (return nil, err) cases which would be more difficult to read when returning a value. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Introduce struct pullGoalMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | The eventual goal is to cleanly capture semantics like "pull all images for DockerArchive" and "did a search through $registries" without hard-coding it through; and to allow a pullImage variant where the caller can pass an imageReference directly. For now, this just wraps []pullRefPair and should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Use []pullRefPair instead of []*pullRefPairMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | We are passing the values, don't really need the pointer sharing semantics, and the structures are small enough, and the arrays short enough, that we very likely lose on the indirect accesses more than we save on quicker copying of the slices when extending them. Value semantics is safer anyway. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Use []pullRefName instead of []*pullRefNameMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | We are passing the values, don't really need the pointer sharing semantics, and the structures are small enough, and the arrays short enough, that we very likely lose on the indirect accesses more than we save on quicker copying of the slices when extending them. Value semantics is safer anyway. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Introduce singlePullRefNameGoalMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | All but two cases returning a []*pullRefName only return a single item. Introduce a helper for that case, which seems not worth it now, but the return value will get a bit more complex and introducing the helper now will minimize code changes in future commits. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Use an early return from refNamesFromPossiblyUnqualifiedNameMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | We will introduce helpers for the "single image" case, and having a separate return statement will make them applicable here. (Also allows us to reduce the scope of some variables a bit.) Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* RFC: Rename Image.PushImage to Image.PushImageToHeuristicDestinationMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | | | | | | | | The goal is to be very explicit about which functions try to heuristically guess what is the expected format of the string. Not quite "shaming" the users, but making sure they stand out. RFC: - Is this at all acceptable? Desirable? - varlink ExportImage says "destination must have transport type"; should it be using alltransports.ParseImageReference + PushImageToReference, then? (While touching the call in cmd/podman, also remove a commented-out older version of the call.) Should not change behavior (but does not add unit tests). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Remove an unnecessary use of alltransports.ParseImageNameMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | | When the string is formatted including a constant transport name, just call the transport to create or parse a reference explicitly. This avoids unnecessary string formatting and parsing. Then drop image.TarballTransport, which has no remaining users. Should not change behavior (but does not add unit tests). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* RFC? Hard-code "format" string values instead of using libpod.* transport namesMiloslav Trmač2018-08-01
| | | | | | | | | | | | | We don't really want to change the names of the CLI options just because the transport names change (with oci-dir/docker-dir there is no direct correspondence wanyway), and this removes a dependency. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Use PushImageToReference for (podman save)Miloslav Trmač2018-08-01
| | | | | | | | | | | | To do that, create the relevant ImageReference values directly by calling ParseReference/NewReference from the relevant transport subpackages instead of formatting strings to be parsed (and heuristically re-parsed) by PushImage. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Call imageNameForSaveDestination while creating the referencesMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | | | Instead of creating a reference string and then checking it again to see which kind of archive it is, just call imageNameForSaveDestination at the place where we already know what kind of archive it is because we are making that decision. This also notably fixes the use of strings.CONTAINS to see whether the just constructed strings start with one of the transport names; that would match anywhere in the path. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Exit early in the simple case in imageNameForSaveDestinationMiloslav Trmač2018-08-01
| | | | | | | | | | | ... to make it a tiny bit easier to read. Should not change behavior (but does not add unit tests). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Rename parameters of imageNameForSaveDestinationMiloslav Trmač2018-08-01
| | | | | | | | | | | ... to make their relationship clear, at the very least. Should not change behavior (but does not add unit tests). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Split imageNameForSaveDestination from saveCmdMiloslav Trmač2018-08-01
| | | | | | | | | | | | | We will need to call it from two places in the future. Should not change behavior, the code is pretty unchanged (down to using confusing parameter names, which we will change immediately) (but does not add unit tests). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Split a single if statement into two.Miloslav Trmač2018-08-01
| | | | | | | | | | | This should not change behavior; it will only make it easier to show that future code move does not change it (but does not add unit tets.) Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Move source handling before destination parsingMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | This will allow adding the reference in the OCIArchive/DockerArchive case in one step, instead of appending it later. Should not change behavior, except that source-related errors will now be reported before possible destination-related errors (but does not add unit tests). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Split Image.PushImageToReference from Image.PushImageMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | This retains the existing string parsing heuristic for users who must continue to use it (notably the varlink API - or is it still subject to change?), but allows callers who can get precise references to supply them without having to deal with string formatting. Should not change behavior (but does not add unit tests). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Don't format to string and re-parse a DockerReference()Miloslav Trmač2018-08-01
| | | | | | | | | | | | | | | | We already have a c/image/docker/reference.Named; no need to round-trip it through a string. This also eliminates the theoretical parsing failure, and the unchecked .(reference.Named) cast. Also add a check for DockerReference() == nil to be extra paranoid, although that should never happen. Should not change behavior (but does not add unit tests). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Remove the :// end from DockerTransportMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | | | | | | | | | (... but keep it in DefaultTransport, which remains irregular.) This makes DockerTransport consistent with the others, and much more importantly, allows several instances to do > imgRef.Transport().Name() == DockerTransport instead of the current > strings.HasPrefix(DockerTransport, imgRef.Transport().Name()) , which currently works but is pretty nonsensical (it does not check the "docker://" prefix against the _full reference_, but it checks the _transport name_ as a prefix of "docker://", i.e. a transport named "d" would be accepted. Should not change behavior, because the only currently existing transport which has a name that is a prefix of "docker://" is c/image/docker.Transport (but does not add unit tests). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Remove the TransportNames arraysMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | They are not used anywhere AFAICS, and the underlying idea that transport-specific image names are reusable across transports is very dubious anyway. So, drop them instead of documenting or fixing them. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Document the properties of DefaultTransport a bit better.Miloslav Trmač2018-08-01
| | | | | | | | | | | | This has no ambition to change the design, just to be clear about what the design is. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Eliminate the "dest" variable.Miloslav Trmač2018-08-01
| | | | | | | | | Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Use an early exit if a docker-archive: image has no repo tagsMiloslav Trmač2018-08-01
| | | | | | | | | | | This avoids another "append an only item to an empty array" pattern, and will allow us to get rid of the "dest" variable entirely. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Reorganize the tag loading in DockerArchive caseMiloslav Trmač2018-08-01
| | | | | | | | | | This should not change behavior, only to make future edits for an early exit easier to review. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Return early in refNamesFromImageReference instead of appending to pullNamesMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | Almost all paths appended to pullNames exactly once; just construct a single-element array in place and return it. That way we can add empty lines as separators, and still come out shorter. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Use srcRef.StringWithinTransport() instead of parsing imgName againMiloslav Trmač2018-08-01
| | | | | | | | | | | | | | | | | | | Because srcRef is created by parsing imgName, both hard-code assumptions about transport-specific formats of the strings, so that is neither better nor worse; but we do less explicit parsing. Should not change behavior for dir:, nor for fully-correct docker-archive:. docker-archive:, though, also supports docker-archive:path:reference, where the reference is ignored (with a warning) on read; in such cases the previous code would use the reference only (not the path), the new code uses both as the path. Neither works, we just change the failure mode (but "error opening path:reference" is now more suggestive of the correct usage). Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Use a switch instead of if/if else/.../elseMiloslav Trmač2018-08-01
| | | | | | | | | Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Remove the error return value from getPullRefNameMiloslav Trmač2018-08-01
| | | | | | | | | | | ... it is always nil. Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
* Rename getPullListFromRef to refPairsFromImageReferenceMiloslav Trmač2018-08-01
| | | | | | | | | | | | This is a bit more specific as to what "ref" or "list" means, and consistent with refPairsFromPossiblyUnqualifiedName Should not change behavior. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1176 Approved by: rhatdan
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