The route object is the url dispatcher, it uses it matching rules to
find what handler should handle a request, perform the call and handle
exceptions that hanend during the handling.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
This is a migration of the basic json support taken from the
osv/httpserver.
The routes uses the json object to return errors in a json format.
This also adds json_exception which has a constructor from an exception.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
The matcher and match rules are used to define and match a url rule. A
rule define a list of string and parameters.
For example, the rule /api/get/{id}/name
Will be mapped by the list of matcher:
str_match for /api/get
param_match for the {id}
and str_match for name
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
The class handler_base is a base class for all handlers. All handlers
should inherit and implement the handle method.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
The request object was originally taken from the boost server example
and was modified in the OSv http implementation.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
This patch adds some of the common functionalities from std:string to
sstring.
It adds length (implement by size() )
It define the constant npos to indicate no possition.
It adds the at (reference and const reference)
It define the find char and find sstring methods
and the substr method
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
need merge sstring
We would like to extend the httpd capabilities and use it for the API
implementation.
The first step is to make it a library with main that calls an instanse.
This break the implementation to a header file, implementation and main,
that simply calls the implementation.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
1. Moved all signal handler functions/members into a wrapping class
2. Block all signals on desctuctor call (resetting of signal handler is
not enough since some signals will arive even if we reset signal handler
to SIG_DFL e.g. timer)
Fixes use-after-free when a signal is caught after the reactor is
destroyed.
Signed-off-by: Shlomi Livne <shlomi@cloudius-systems.com>
engine() cannot be called before the local_engine was constructed because it
dereferences the pointer local_engine to create a reference.
Consequently, the following error can be seen while running fileiotest:
./core/reactor.hh:854:13: runtime error: reference binding to null pointer of
type 'struct reactor' ASAN:SIGSEGV
Let's switch the test to use app_template.
Signed-off-by: Raphael S. Carvalho <raphaelsc@cloudius-systems.com>
This value is passed as an opaque parameter of the rte_pktmbuf_pool_init().
It should equal to a buffer size + RTE_PKTMBUF_HEADROOM.
The default value is 2K + RTE_PKTMBUF_HEADROOM.
PMD is using this value minus RTE_PKTMBUF_HEADROOM for configuring the Rx
data buffers' size when it configures the Rx HW ring.
Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
Add "finally" continuation overload for functions returning future type that
awaits finishing the continuation in question before continuing the "present"
one. I.e. a wrapper around "then_wrapped" to remove the need to deal with the
original return value.
Signed-off-by: Calle Wilund <calle@cloudius-systems.com>
Basic explanation of the reclaimer algorithm:
- Each slab page has a descriptor containing information about it, such as
refcnt, vector of free objects, link into LRU, etc.
- The LRU list will only contain slab pages which items are unused, so as
to make the reclaiming process faster and easier. Maintaining the LRU of slab
pages has a performance penalty of ~1.3%. Shlomi suggested an approach where
LRU would no longer exist and timestamp would be used instead to keep track of
recency. Reclaimer would then iterate through all slab pages checking for an
unused slab page with the lowest timestamp.
- Reclaimer will get the least-recently-used slab page from the LRU list,
do all the management stuff required, and iterate through the page erasing any
of the items there contained. Once reclaimer was called, it's likely that slab
memory usage is calibrated, thus slab pages shouldn't be allocated anymore.
- Reclaimer is enabled by default but can be disabled by specifying the slab
size using the application parameter --max-slab-size.
Signed-off-by: Raphael S. Carvalho <raphaelsc@cloudius-systems.com>
input_stream's constructor had an unused buf_size parameter. Such a
parameter is not needed - whenever the input_stream needs more
data it calls the underlying data_source's get(), and thus only the
data_source gets to decide the buffer size. Moreover, in some
implementations, this read buffer size will be different each time -
e.g., in a chunk-compressed file, the uncompressed chunk's size will
be different each time.
Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>
Do not store the tcp header in unacked queue. When partial ack of a
segment happens, trim off the acked part of a segment. When retransmits,
recalculate the tcp header and retransmit only the unacked part.
We neglected to set offload_info::needs_csum on reset packets, resuling in
them being ignored by the recipient. Symptoms include connection attempts
to closed ports (seastar = passive end) hanging instead the active end
understanding the port is closed.
Allocate exactly the available fragment size in order to catch buffer
overflows.
We get similar behaviour in dpdk, since without huge pages, it must copy
the packet into a newly allocated buffer.
Two bugs:
1. get_header<type>(offset) was used with size given as the offset
2. opt_end failed to account for the mandatory tcp header, and thus was
20 bytes to large, resulting in overflow.
SFINAE only works for substituted template parameters, not any complication
error (or it would be called CEINAE); therefore hash<T> for enums will fail
to compile, given a non-enum, rather than being ignored.
It's not possible to specialize hash<> for enums, since the primary template
does not have en extra Enable template argument for use with enable_if. We
therefore rename it to enum_hash<> and require users to explicitly define
hash<MyEnum> as inheriting from it.
We currently only signal eof for consume() users. If one is calling
read_exactly, eof will never be signalled.
This might make some sense in continuous streams, but specially when
dealing with files, eof is a natural part of line that can and will
happen all the time. Every "read-until-finish" file-loop will at some
point rely on eof.
Signed-off-by: Glauber Costa <glommer@cloudius-systems.com>
boost::join() provided by boost/algorithm/string.hpp conflicts with
boost::join() from boost/range/join.hpp. It looks like a boost issue
but let's not pollute the namespace unnecesssarily.
Regarding the change in configure.py, it looks like scollectd.cc is
part of the 'core' package, but it needs 'net/api.hh', so I added
'net/net.cc' to core.
It is sometimes frustrating to use open_file_dma, because it has the hardcoded
behavior of always assuming O_CREAT. Sometimes this is not desirable, and it
would be nice to have the option not to do so.
Note that, by design, I am only including in the open_flags enum things that we
want the user of the API to control. Stuff like O_DIRECT should not be
optional, and therefore is not included in the visible interface.
Because of that I am changing the function signature to include a paramater
that specifies whether or not we should create the file if it does not exist.
Signed-off-by: Glauber Costa <glommer@cloudius-systems.com>
