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Signed-off-by: Matthias Beyer <matthias.beyer@atos.net>
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Signed-off-by: Matthias Beyer <matthias.beyer@atos.net>
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Signed-off-by: Matthias Beyer <matthias.beyer@atos.net>
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This patch adds the condition-filtering support in the DAG-building code for
conditional dependencies.
Signed-off-by: Matthias Beyer <matthias.beyer@atos.net>
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We need to refactor because we want, in the next step, add filters in the
dependency-processing mechanism, where we filter out dependencies by their
condition.
Thus, using the Package::get_self_packaged_dependences() helper fn does not work
anymore and we remove it with this patch.
Signed-off-by: Matthias Beyer <matthias.beyer@atos.net>
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Signed-off-by: Matthias Beyer <matthias.beyer@atos.net>
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Signed-off-by: Matthias Beyer <matthias.beyer@atos.net>
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This patch extends the interface for building the package DAG with a parameter
for the data that is required to check conditions for conditional dependencies.
A "DTO" type is added for this data.
The actual condition-checking is not implemented in this patch.
Signed-off-by: Matthias Beyer <matthias.beyer@atos.net>
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Fixes: f20bf09292739e1bdbba9c1f8235a35f7d2d7712 ("Make progress bar for loading DAG optional")
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
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Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
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Signed-off-by: Matthias Beyer <matthias.beyer@atos.net>
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This fixes a bug where dependencies were not found, but this was
ignored.
This happened even if there was a typo in the version of the
dependency, for example.
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
Tested-by: Matthias Beyer <mail@beyermatthias.de>
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Because passing by value is simply not necessary here.
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
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This patch implements testing for the crate::package::Dag code.
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
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In a DAG, we can find a (packagename, packageversion) multiple times:
.-> C -.
/ \
D > A
\ /
`-> B -´
for example, in this scenario we would find "A" multiple times.
If we re-find a package that we already recursed for, do not recurse
again for it.
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
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This patch reimplements the package orchestration functionality to rely
on a DAG rather than a tree.
A
/ \
B E
/ \ \
C D F
Before this change, the structure the packages were organized in for a
build was a tree.
That did work reasonable well for initial development of butido, because
this is a simple case and the implementation is rather simple, too.
But, packages and their dependencies are not always organized in a tree.
Most of the time, they are organized in a DAG:
.-> C -,
/ \
D > A
\ /
`-> B -´
This is a real-world example: A could be a common crypto-library that I
do not want to name here.
B and C could be libraries that use the said crypto-library and D could
be a program that use B and C.
Because said crypto-library builds rather long, building it twice and
throwing one result away is a no-go.
A DAG as organizational structure makes that issue go away entirely.
Also, we can later implement checks whether the DAG contains multiple
versions of the same library, if that is undesireable.
The change itself is rather big, frankly because it is a non-trivial
change the replace the whole data structure and its handling in the
orchestrator code.
First of all, we introduce the "daggy" library, which provides the DAG
implementation on top of the popular "petgraph" library.
The package `Tree` datastructure was replaced by a package `Dag`
datastructure. This type implements the heavy-lifting that is needed to
load a package and all its dependencies from the `Repository` object.
The `JobTree` was also reimplemented, but as `daggy::Dag` provides a
convenient `map()` function, its implementation which transforms the
package `Dag` into a job `Dag` is rather trivial.
`crate::job::Dag` then provides the convenience `iter()` function to
iterate over all elements in the DAG and providing a `JobDefinition`
object for each node.
The topology in which we traverse the DAG is not an issue, as we need to
create tasks for all `JobDefinition`s anyways, so we do not care about
traversal topology at all.
The `crate::package::Package` type got an `Hash` implementation, which
is necessary to keep track of the mappings while reading the DAG from
the repository.
The implementation does not create the edges between the nodes in the
DAG right when inserting, but afterwards.
To keep track of the `daggy::NodeIndex`es, it keeps a mapping
Package -> NodeIndex
in a Hashmap. Thus, `Package` must implement `std::hash::Hash`
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
Tested-by: Matthias Beyer <mail@beyermatthias.de>
squash! Reimplement as DAG
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