[RFC PATCH] ndctl, list: add ndctl_filter_opts for sharing filter

I wrote a patch for refactoring cmd_list(). It would be appreciated if you could check it. This patch refactors the filter in cmd_list() into ndctl_filter_opts object with callback functions. So that the filter used for matching a given object can be shared between "list" and "monitor". Signed-off-by: QI Fuli <qi.fuli(a)jp.fujitsu.com&gt; --- ndctl/list.c | 142 +++++++++++++++++++++++++++++++++++++++-------------------- ndctl/list.h | 35 +++++++++++++++ 2 files changed, 129 insertions(+), 48 deletions(-) create mode 100644 ndctl/list.h diff --git a/ndctl/list.c b/ndctl/list.c index 37a224a..c1a095d 100644 --- a/ndctl/list.c +++ b/ndctl/list.c @@ -22,7 +22,7 @@ #include <ndctl/libndctl.h> #include <util/parse-options.h> #include <ccan/array_size/array_size.h> - +#include "list.h" #include <ndctl.h> static struct { @@ -52,7 +52,7 @@ static unsigned long listopts_to_flags(void) return flags; } -static struct { +static struct parameter { const char *bus; const char *region; const char *type; @@ -61,6 +61,13 @@ static struct { const char *namespace; } param; +struct ndctl_filter_opts *ndfop = &(struct ndctl_filter_opts) { + .match_bus = util_match_bus, + .match_dimm = util_match_dimm, + .match_region = util_match_region, + .match_namespace = util_match_namespace, +}; + static int did_fail; static int jflag = JSON_C_TO_STRING_PRETTY; @@ -108,15 +115,17 @@ static struct json_object *list_namespaces(struct ndctl_region *region, if (!list.namespaces) break; - if (!util_namespace_filter(ndns, param.namespace)) - continue; - if (param.mode && mode_to_type(param.mode) != mode) continue; if (!list.idle && !ndctl_namespace_is_active(ndns)) continue; + jndns = ndfop->match_namespace(ndns, &param, + listopts_to_flags()); + if(!jndns) + continue; + if (!jnamespaces) { jnamespaces = json_object_new_array(); if (!jnamespaces) { @@ -129,12 +138,6 @@ static struct json_object *list_namespaces(struct ndctl_region *region, jnamespaces); } - jndns = util_namespace_to_json(ndns, listopts_to_flags()); - if (!jndns) { - fail("\n"); - continue; - } - json_object_array_add(jnamespaces, jndns); } @@ -261,6 +264,74 @@ static int num_list_flags(void) return list.buses + list.dimms + list.regions + list.namespaces; } +struct json_object *util_match_bus(struct ndctl_bus *bus, void *ctx, + unsigned long flags) +{ + struct parameter *pa = (struct parameter*)ctx; + struct json_object *jbus = NULL; + if (!util_bus_filter(bus, pa->bus) + || !util_bus_filter_by_dimm(bus, pa->dimm) + || !util_bus_filter_by_region(bus, pa->region) + || !util_bus_filter_by_namespace(bus, pa->namespace)) + return NULL; + jbus = util_bus_to_json(bus); + if (!jbus) { + fail("\n"); + return NULL; + } + return jbus; +} + +struct json_object *util_match_dimm(struct ndctl_dimm *dimm, void *ctx, + unsigned long flags) +{ + struct parameter *pa = (struct parameter*)ctx; + struct json_object *jdimm = NULL; + if (!util_dimm_filter(dimm, pa->dimm) + || !util_dimm_filter_by_region(dimm, pa->region) + || !util_dimm_filter_by_namespace(dimm, pa->namespace)) + return NULL; + jdimm = util_dimm_to_json(dimm, flags); + if (!jdimm) { + fail("\n"); + return NULL; + } + return jdimm; +} + +struct json_object *util_match_region(struct ndctl_region *region, void *ctx, + unsigned long flags) +{ + struct parameter *pa = (struct parameter*)ctx; + struct json_object *jregion = NULL; + if (!util_region_filter(region, pa->region) + || !util_region_filter_by_dimm(region, pa->dimm) + || !util_region_filter_by_namespace(region, + pa->namespace)) + return NULL; + jregion = region_to_json(region, flags); + if (!jregion) { + fail("\n"); + return NULL; + } + return jregion; +} + +struct json_object *util_match_namespace(struct ndctl_namespace *namespace, + void *ctx, unsigned long flags) +{ + struct parameter *pa = (struct parameter*)ctx; + struct json_object *jndns = NULL; + if (!util_namespace_filter(namespace, pa->namespace)) + return NULL; + jndns = util_namespace_to_json(namespace, flags); + if (!jndns) { + fail("\n"); + return NULL; + } + return jndns; +} + int cmd_list(int argc, const char **argv, void *ctx) { const struct option options[] = { @@ -341,15 +412,12 @@ int cmd_list(int argc, const char **argv, void *ctx) ndctl_bus_foreach(ctx, bus) { struct json_object *jbus = NULL; + jbus = ndfop->match_bus(bus, &param, 0); + if (!jbus) + continue; struct ndctl_region *region; struct ndctl_dimm *dimm; - if (!util_bus_filter(bus, param.bus) - || !util_bus_filter_by_dimm(bus, param.dimm) - || !util_bus_filter_by_region(bus, param.region) - || !util_bus_filter_by_namespace(bus, param.namespace)) - continue; - if (list.buses) { if (!jbuses) { jbuses = json_object_new_array(); @@ -358,12 +426,6 @@ int cmd_list(int argc, const char **argv, void *ctx) continue; } } - - jbus = util_bus_to_json(bus); - if (!jbus) { - fail("\n"); - continue; - } json_object_array_add(jbuses, jbus); } @@ -374,11 +436,10 @@ int cmd_list(int argc, const char **argv, void *ctx) if (!list.dimms) break; - if (!util_dimm_filter(dimm, param.dimm) - || !util_dimm_filter_by_region(dimm, - param.region) - || !util_dimm_filter_by_namespace(dimm, - param.namespace)) + jdimm = ndfop->match_dimm(dimm, &param, + listopts_to_flags()); + + if (!jdimm) continue; if (!list.idle && !ndctl_dimm_is_enabled(dimm)) @@ -392,13 +453,8 @@ int cmd_list(int argc, const char **argv, void *ctx) } if (jbus) - json_object_object_add(jbus, "dimms", jdimms); - } - - jdimm = util_dimm_to_json(dimm, listopts_to_flags()); - if (!jdimm) { - fail("\n"); - continue; + json_object_object_add(jbus, "dimms", + jdimms); } if (list.health) { @@ -429,12 +485,9 @@ int cmd_list(int argc, const char **argv, void *ctx) ndctl_region_foreach(bus, region) { struct json_object *jregion; - - if (!util_region_filter(region, param.region) - || !util_region_filter_by_dimm(region, - param.dimm) - || !util_region_filter_by_namespace(region, - param.namespace)) + jregion = ndfop->match_region(region, &param, + listopts_to_flags()); + if (!jregion) continue; if (type && ndctl_region_get_type(region) != type) @@ -460,13 +513,6 @@ int cmd_list(int argc, const char **argv, void *ctx) json_object_object_add(jbus, "regions", jregions); } - - jregion = region_to_json(region, listopts_to_flags()); - if (!jregion) { - fail("\n"); - continue; - } - /* * Without a bus we are collecting regions anonymously * across the platform. diff --git a/ndctl/list.h b/ndctl/list.h new file mode 100644 index 0000000..e24e73d --- /dev/null +++ b/ndctl/list.h @@ -0,0 +1,35 @@ +/* + * Copyright (c) 2018, FUJITSU LIMITED. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +#ifndef _LIST_H_ +#define _LIST_H_ + +struct ndctl_filter_opts { + struct json_object *(*match_bus)(struct ndctl_bus *bus, void *ctx, + unsigned long flags); + struct json_object *(*match_dimm)(struct ndctl_dimm *dimm, void *ctx, + unsigned long flags); + struct json_object *(*match_region)(struct ndctl_region *region, + void *ctx, unsigned long flags); + struct json_object *(*match_namespace)(struct ndctl_namespace *namespace, + void *ctx, unsigned long flags); +}; +struct json_object *util_match_bus(struct ndctl_bus *bus, void *ctx, + unsigned long flags); +struct json_object *util_match_dimm(struct ndctl_dimm *dimm, void *ctx, + unsigned long flags); +struct json_object *util_match_region(struct ndctl_region *region, void *ctx, + unsigned long flags); +struct json_object *util_match_namespace(struct ndctl_namespace *namespace, + void *ctx, unsigned long flags); +#endif -- 2.9.5