/********************************************************************* * Copyright 1993, UCAR/Unidata * See netcdf/COPYRIGHT file for copying and redistribution conditions. *********************************************************************/ #include "ncdap.h" #include "ncd2dispatch.h" #include "dapalign.h" #ifdef _MSC_VER #include #endif #define NCRCFILE "NCRCFILE" #ifdef HAVE_GETRLIMIT # ifdef HAVE_SYS_RESOURCE_H # include # endif # ifdef HAVE_SYS_RESOURCE_H # include # endif #endif #define getncid(drno) (((NC*)drno)->ext_ncid) /* Define the set of protocols known to be constrainable */ static char* constrainableprotocols[] = {"http", "https",NULL}; static int ncd2initialized = 0; size_t dap_one[NC_MAX_VAR_DIMS]; size_t dap_zero[NC_MAX_VAR_DIMS]; /* Forward */ static NCerror buildncstructures(NCDAPCOMMON*); static NCerror builddims(NCDAPCOMMON*); static char* getdefinename(CDFnode* node); static NCerror buildvars(NCDAPCOMMON*); static NCerror buildglobalattrs(NCDAPCOMMON*, CDFnode* root); static NCerror buildattribute(NCDAPCOMMON*, NCattribute*, nc_type, int); static void computedimindexanon(CDFnode* dim, CDFnode* var); static void replacedims(NClist* dims); static int equivalentdim(CDFnode* basedim, CDFnode* dupdim); static NCerror addstringdims(NCDAPCOMMON*); static NCerror defrecorddim(NCDAPCOMMON*); static NCerror defseqdims(NCDAPCOMMON*); static NCerror showprojection(NCDAPCOMMON*, CDFnode* var); static NCerror getseqdimsize(NCDAPCOMMON*, CDFnode* seq, size_t* sizep); static NCerror makeseqdim(NCDAPCOMMON*, CDFnode* seq, size_t count, CDFnode** sqdimp); static NCerror countsequence(NCDAPCOMMON*, CDFnode* xseq, size_t* sizep); static NCerror freeNCDAPCOMMON(NCDAPCOMMON*); static NCerror fetchpatternmetadata(NCDAPCOMMON*); static size_t fieldindex(CDFnode* parent, CDFnode* child); static NCerror computeseqcountconstraints(NCDAPCOMMON*, CDFnode*, NCbytes*); static void computeseqcountconstraintsr(NCDAPCOMMON*, CDFnode*, CDFnode**); static void estimatevarsizes(NCDAPCOMMON*); static NCerror fetchconstrainedmetadata(NCDAPCOMMON*); static NCerror suppressunusablevars(NCDAPCOMMON*); static NCerror fixzerodims(NCDAPCOMMON*); static void applyclientparamcontrols(NCDAPCOMMON*); static NCerror applyclientparams(NCDAPCOMMON*); /**************************************************/ static int NCD2_create(const char *path, int cmode, size_t initialsz, int basepe, size_t *chunksizehintp, int use_parallel, void* mpidata, NC_Dispatch*,NC* ncp); static int NCD2_redef(int ncid); static int NCD2__enddef(int ncid, size_t h_minfree, size_t v_align, size_t v_minfree, size_t r_align); static int NCD2_sync(int ncid); static int NCD2_abort(int ncid); static int NCD2_put_vara(int ncid, int varid, const size_t *start, const size_t *edges0, const void *value0, nc_type memtype); static int NCD2_get_vara(int ncid, int varid, const size_t *start, const size_t *edges, void *value, nc_type memtype); static int NCD2_put_vars(int ncid, int varid, const size_t *start, const size_t *edges, const ptrdiff_t* stride, const void *value0, nc_type memtype); static int NCD2_get_vars(int ncid, int varid, const size_t *start, const size_t *edges, const ptrdiff_t* stride, void *value, nc_type memtype); static NC_Dispatch NCD2_dispatch_base = { NC_FORMATX_DAP2, NCD2_create, NCD2_open, NCD2_redef, NCD2__enddef, NCD2_sync, NCD2_abort, NCD2_close, NULL, /*set_fill*/ NULL, /*inq_base_pe*/ NULL, /*set_base_pe*/ NULL, /*inq_format*/ NCD2_inq_format_extended, /*inq_format_extended*/ NULL, /*inq*/ NULL, /*inq_type*/ NULL, /*def_dim*/ NULL, /*inq_dimid*/ NULL, /*inq_dim*/ NULL, /*inq_unlimdim*/ NULL, /*rename_dim*/ NULL, /*inq_att*/ NULL, /*inq_attid*/ NULL, /*inq_attname*/ NULL, /*rename_att*/ NULL, /*del_att*/ NULL, /*get_att*/ NULL, /*put_att*/ NULL, /*def_var*/ NULL, /*inq_varid*/ NULL, /*rename_var*/ NCD2_get_vara, NCD2_put_vara, NCD2_get_vars, NCD2_put_vars, NCDEFAULT_get_varm, NCDEFAULT_put_varm, NULL, /*inq_var_all*/ NULL, /*var_par_access*/ #ifdef USE_NETCDF4 NULL, /*show_metadata*/ NULL, /*inq_unlimdims*/ NULL, /*inq_ncid*/ NULL, /*inq_grps*/ NULL, /*inq_grpname*/ NULL, /*inq_grpname_full*/ NULL, /*inq_grp_parent*/ NULL, /*inq_grp_full_ncid*/ NULL, /*inq_varids*/ NULL, /*inq_dimids*/ NULL, /*inq_typeids*/ NULL, /*inq_type_equal*/ NULL, /*def_grp*/ NULL, /*rename_grp*/ NULL, /*inq_user_type*/ NULL, /*inq_typeid*/ NULL, /*def_compound*/ NULL, /*insert_compound*/ NULL, /*insert_array_compound*/ NULL, /*inq_compound_field*/ NULL, /*inq_compound_fieldindex*/ NULL, /*def_vlen*/ NULL, /*put_vlen_element*/ NULL, /*get_vlen_element*/ NULL, /*def_enum*/ NULL, /*insert_enum*/ NULL, /*inq_enum_member*/ NULL, /*inq_enum_ident*/ NULL, /*def_opaque*/ NULL, /*def_var_deflate*/ NULL, /*def_var_fletcher32*/ NULL, /*def_var_chunking*/ NULL, /*def_var_fill*/ NULL, /*def_var_endian*/ NULL, /*set_var_chunk_cache*/ NULL, /*get_var_chunk_cache*/ #endif /*USE_NETCDF4*/ }; NC_Dispatch* NCD2_dispatch_table = NULL; /* moved here from ddispatch.c */ static NC_Dispatch NCD2_dispatcher; /* overlay result */ int NCD2_initialize(void) { int i; /* Create our dispatch table as the merge of NCD2 table and NCSUBSTRATE */ /* watch the order because we want NCD2 to overwrite NCSUBSTRATE */ NC_dispatch_overlay(&NCD2_dispatch_base, NCSUBSTRATE_dispatch_table, &NCD2_dispatcher); NCD2_dispatch_table = &NCD2_dispatcher; /* Local Initialization */ compute_nccalignments(); for(i=0;iint_ncid = nc__pseudofd(); /* create a unique id */ dapcomm->controller = (NC*)drno; dapcomm->cdf.separator = "."; dapcomm->cdf.smallsizelimit = DFALTSMALLLIMIT; dapcomm->cdf.cache = createnccache(); #ifdef HAVE_GETRLIMIT { struct rlimit rl; if(getrlimit(RLIMIT_NOFILE, &rl) >= 0) { dapcomm->cdf.cache->cachecount = (size_t)(rl.rlim_cur / 2); } } #endif #ifdef OCCOMPILEBYDEFAULT /* set the compile flag by default */ dapcomm->oc.rawurltext = (char*)emalloc(strlen(path)+strlen("[compile]")+1); strcpy(dapcomm->oc.rawurltext,"[compile]"); strcat(dapcomm->oc.rawurltext, path); #else dapcomm->oc.rawurltext = strdup(path); #endif ncuriparse(dapcomm->oc.rawurltext,&dapcomm->oc.url); /* parse the client parameters */ ncuridecodeparams(dapcomm->oc.url); if(!constrainable(dapcomm->oc.url)) SETFLAG(dapcomm->controls,NCF_UNCONSTRAINABLE); #ifdef COLUMBIA_HACK { const char* p; /* Does this url look like it is from columbia? */ if(dapcomm->oc.url->host != NULL) { for(p=dapcomm->oc.url->host;*p;p++) { if(strncmp(p,COLUMBIA_HACK,strlen(COLUMBIA_HACK))==0) SETFLAG(dapcomm->controls,NCF_COLUMBIA); } } } #endif /* fail if we are unconstrainable but have constraints */ if(FLAGSET(dapcomm->controls,NCF_UNCONSTRAINABLE)) { if(dapcomm->oc.url->constraint != NULL) { nclog(NCLOGWARN,"Attempt to constrain an unconstrainable data source: %s", dapcomm->oc.url->constraint); ncstat = THROW(NC_EDAPCONSTRAINT); goto done; } } /* Use libsrc code for storing metadata */ { char tmpname[32]; /* Create fake file name: exact name must be unique, but is otherwise irrelevant because we are using NC_DISKLESS */ snprintf(tmpname,sizeof(tmpname),"%d",drno->int_ncid); /* Now, use the file to create the netcdf file; force classic. */ ncstat = nc_create(tmpname,NC_DISKLESS|NC_CLASSIC_MODEL,&drno->substrate); if(ncstat != NC_NOERR) {THROWCHK(ncstat); goto done;} } /* Avoid fill */ nc_set_fill(drno->substrate,NC_NOFILL,NULL); dapcomm->oc.dapconstraint = (DCEconstraint*)dcecreate(CES_CONSTRAINT); dapcomm->oc.dapconstraint->projections = nclistnew(); dapcomm->oc.dapconstraint->selections = nclistnew(); /* Parse constraints to make sure they are syntactically correct */ ncstat = dapparsedapconstraints(dapcomm,dapcomm->oc.url->constraint,dapcomm->oc.dapconstraint); if(ncstat != NC_NOERR) {THROWCHK(ncstat); goto done;} /* Construct a url for oc minus any constraint and params*/ dapcomm->oc.urltext = ncuribuild(dapcomm->oc.url,NULL,NULL, (NCURISTD ^ NCURICONSTRAINTS)); /* Pass to OC */ ocstat = oc_open(dapcomm->oc.urltext,&dapcomm->oc.conn); if(ocstat != OC_NOERR) {THROWCHK(ocstat); goto done;} #ifdef DEBUG1 (void)oc_trace_curl(dapcomm->oc.conn); #endif nullfree(dapcomm->oc.urltext); /* clean up */ dapcomm->oc.urltext = NULL; /* process control client parameters */ applyclientparamcontrols(dapcomm); /* Turn on logging; only do this after oc_open*/ if((value = dapparamvalue(dapcomm,"log")) != NULL) { ncloginit(); if(nclogopen(value)) ncsetlogging(1); ncloginit(); if(nclogopen(value)) ncsetlogging(1); } /* fetch and build the unconstrained DDS for use as pattern */ ncstat = fetchpatternmetadata(dapcomm); if(ncstat != NC_NOERR) goto done; /* Operations on the pattern tree */ /* Accumulate useful nodes sets */ ncstat = computecdfnodesets(dapcomm,dapcomm->cdf.fullddsroot->tree); if(ncstat) {THROWCHK(ncstat); goto done;} /* Define the dimsettrans list */ ncstat = definedimsettrans(dapcomm,dapcomm->cdf.fullddsroot->tree); if(ncstat) {THROWCHK(ncstat); goto done;} /* Mark the nodes of the pattern that are eligible for prefetch */ ncstat = markprefetch(dapcomm); /* fetch and build the constrained DDS */ ncstat = fetchconstrainedmetadata(dapcomm); if(ncstat != NC_NOERR) goto done; #ifdef DEBUG2 fprintf(stderr,"constrained dds: %s\n",dumptree(dapcomm->cdf.ddsroot)); #endif /* Operations on the constrained tree */ /* Accumulate useful nodes sets */ ncstat = computecdfnodesets(dapcomm,dapcomm->cdf.ddsroot->tree); if(ncstat) {THROWCHK(ncstat); goto done;} /* Fix grids */ ncstat = fixgrids(dapcomm); if(ncstat) {THROWCHK(ncstat); goto done;} /* Locate and mark usable sequences */ ncstat = sequencecheck(dapcomm); if(ncstat) {THROWCHK(ncstat); goto done;} /* suppress variables not in usable sequences */ ncstat = suppressunusablevars(dapcomm); if(ncstat) {THROWCHK(ncstat); goto done;} /* apply client parameters */ ncstat = applyclientparams(dapcomm); if(ncstat) {THROWCHK(ncstat); goto done;} /* Add (as needed) string dimensions*/ ncstat = addstringdims(dapcomm); if(ncstat) {THROWCHK(ncstat); goto done;} if(nclistlength(dapcomm->cdf.ddsroot->tree->seqnodes) > 0) { /* Build the sequence related dimensions */ ncstat = defseqdims(dapcomm); if(ncstat) {THROWCHK(ncstat); goto done;} } /* Define the dimsetplus and dimsetall lists */ ncstat = definedimsets(dapcomm,dapcomm->cdf.ddsroot->tree); if(ncstat) {THROWCHK(ncstat); goto done;} /* Re-compute the dimension names*/ ncstat = computecdfdimnames(dapcomm); if(ncstat) {THROWCHK(ncstat); goto done;} /* Deal with zero size dimensions */ ncstat = fixzerodims(dapcomm); if(ncstat) {THROWCHK(ncstat); goto done;} /* Attempt to use the DODS_EXTRA info to turn one of the dimensions into unlimited. Assume computecdfdimnames34 has already been called. */ ncstat = defrecorddim(dapcomm); if(ncstat) {THROWCHK(ncstat); goto done;} if(dapcomm->cdf.recorddimname != NULL && nclistlength(dapcomm->cdf.ddsroot->tree->seqnodes) > 0) { /*nclog(NCLOGWARN,"unlimited dimension specified, but sequences exist in DDS");*/ PANIC("unlimited dimension specified, but sequences exist in DDS"); } /* Re-compute the var names*/ ncstat = computecdfvarnames(dapcomm, dapcomm->cdf.ddsroot, dapcomm->cdf.ddsroot->tree->varnodes); if(ncstat) {THROWCHK(ncstat); goto done;} /* Transfer data from the unconstrained DDS data to the unconstrained DDS */ ncstat = dimimprint(dapcomm); if(ncstat) goto done; /* Process the constraints to map to the constrained CDF tree */ /* (must follow fixgrids3 */ ncstat = dapmapconstraints(dapcomm->oc.dapconstraint,dapcomm->cdf.ddsroot); if(ncstat != NC_NOERR) goto done; /* Canonicalize the constraint */ ncstat = dapfixprojections(dapcomm->oc.dapconstraint->projections); if(ncstat != NC_NOERR) {THROWCHK(ncstat); goto done;} /* Fill in segment information */ ncstat = dapqualifyconstraints(dapcomm->oc.dapconstraint); if(ncstat != NC_NOERR) goto done; /* Accumulate set of variables in the constraint's projections */ ncstat = dapcomputeprojectedvars(dapcomm,dapcomm->oc.dapconstraint); if(ncstat) {THROWCHK(ncstat); goto done;} /* using the modified constraint, rebuild the constraint string */ if(FLAGSET(dapcomm->controls,NCF_UNCONSTRAINABLE)) { /* ignore all constraints */ dapcomm->oc.urltext = ncuribuild(dapcomm->oc.url,NULL,NULL,0); } else { char* constraintstring = dcebuildconstraintstring(dapcomm->oc.dapconstraint); ncurisetconstraints(dapcomm->oc.url,constraintstring); nullfree(constraintstring); dapcomm->oc.urltext = ncuribuild(dapcomm->oc.url,NULL,NULL,NCURICONSTRAINTS); } #ifdef DEBUG fprintf(stderr,"ncdap3: final constraint: %s\n",dapcomm->oc.url->constraint); #endif /* Estimate the variable sizes */ estimatevarsizes(dapcomm); /* Build the meta data */ ncstat = buildncstructures(dapcomm); if(ncstat != NC_NOERR) {THROWCHK(ncstat); goto done;} /* Explicitly do not call enddef because it will complain about variables that are too large. */ #if 0 ncstat = nc_endef(drno->substrate,NC_NOFILL,NULL); if(ncstat != NC_NOERR && ncstat != NC_EVARSIZE) {THROWCHK(ncstat); goto done;} #endif { NC* ncsub; NC* drno = dapcomm->controller; CDFnode* unlimited = dapcomm->cdf.recorddim; /* (for now) break abstractions*/ NC3_INFO* nc3i; /* get the id for the substrate */ ncstat = NC_check_id(drno->substrate,&ncsub); if(ncstat != NC_NOERR) {THROWCHK(ncstat); goto done;} nc3i = (NC3_INFO*)ncsub->dispatchdata; if(unlimited != NULL) { /* Set the effective size of UNLIMITED */ NC_set_numrecs(nc3i,unlimited->dim.declsize); } /* Pretend the substrate is read-only */ NC_set_readonly(nc3i); } /* Do any necessary data prefetch */ if(FLAGSET(dapcomm->controls,NCF_PREFETCH) && FLAGSET(dapcomm->controls,NCF_PREFETCH_EAGER)) { ncstat = prefetchdata(dapcomm); if(ncstat != NC_NOERR) { del_from_NCList((NC*)drno); /* undefine here */ {THROWCHK(ncstat); goto done;} } } return ncstat; done: if(drno != NULL) NCD2_close(drno->ext_ncid); if(ocstat != OC_NOERR) ncstat = ocerrtoncerr(ocstat); return THROW(ncstat); } int NCD2_close(int ncid) { NC* drno; NCDAPCOMMON* dapcomm; int ncstatus = NC_NOERR; ncstatus = NC_check_id(ncid, (NC**)&drno); if(ncstatus != NC_NOERR) return THROW(ncstatus); dapcomm = (NCDAPCOMMON*)drno->dispatchdata; /* We call abort rather than close to avoid trying to write anything or try to pad file length */ ncstatus = nc_abort(drno->substrate); /* clean NC* */ freeNCDAPCOMMON(dapcomm); return THROW(ncstatus); } /**************************************************/ static NCerror buildncstructures(NCDAPCOMMON* dapcomm) { NCerror ncstat = NC_NOERR; CDFnode* dds = dapcomm->cdf.ddsroot; NC* ncsub; ncstat = NC_check_id(dapcomm->controller->substrate,&ncsub); if(ncstat != NC_NOERR) goto done; ncstat = buildglobalattrs(dapcomm,dds); if(ncstat != NC_NOERR) goto done; ncstat = builddims(dapcomm); if(ncstat != NC_NOERR) goto done; ncstat = buildvars(dapcomm); if(ncstat != NC_NOERR) goto done; done: return THROW(ncstat); } static NCerror builddims(NCDAPCOMMON* dapcomm) { int i; NCerror ncstat = NC_NOERR; int dimid; NClist* dimset = NULL; NC* drno = dapcomm->controller; NC* ncsub; char* definename; /* collect all dimensions from variables */ dimset = dapcomm->cdf.ddsroot->tree->dimnodes; /* Sort by fullname just for the fun of it */ for(;;) { int last = nclistlength(dimset) - 1; int swap = 0; for(i=0;incfullname,dim2->ncfullname) > 0) { nclistset(dimset,i,(void*)dim2); nclistset(dimset,i+1,(void*)dim1); swap = 1; break; } } if(!swap) break; } /* Define unlimited only if needed */ if(dapcomm->cdf.recorddim != NULL) { CDFnode* unlimited = dapcomm->cdf.recorddim; definename = getdefinename(unlimited); ncstat = nc_def_dim(drno->substrate, definename, NC_UNLIMITED, &unlimited->ncid); nullfree(definename); if(ncstat != NC_NOERR) {THROWCHK(ncstat); goto done;} /* get the id for the substrate */ ncstat = NC_check_id(drno->substrate,&ncsub); if(ncstat != NC_NOERR) {THROWCHK(ncstat); goto done;} #if 0 nc3sub = (NC3_INFO*)&ncsub->dispatchdata; /* Set the effective size of UNLIMITED; note that this cannot easily be done thru the normal API.*/ NC_set_numrecs(nc3sub,unlimited->dim.declsize); #endif } for(i=0;idim.basedim != NULL) continue; /* handle below */ if(DIMFLAG(dim,CDFDIMRECORD)) continue; /* defined above */ #ifdef DEBUG1 fprintf(stderr,"define: dim: %s=%ld\n",dim->ncfullname,(long)dim->dim.declsize); #endif definename = getdefinename(dim); ncstat = nc_def_dim(drno->substrate,definename,dim->dim.declsize,&dimid); if(ncstat != NC_NOERR) { THROWCHK(ncstat); nullfree(definename); goto done; } nullfree(definename); dim->ncid = dimid; } /* Make all duplicate dims have same dimid as basedim*/ /* (see computecdfdimnames)*/ for(i=0;idim.basedim != NULL) { dim->ncid = dim->dim.basedim->ncid; } } done: nclistfree(dimset); return THROW(ncstat); } /* Simultaneously build any associated attributes*/ /* and any necessary pseudo-dimensions for string types*/ static NCerror buildvars(NCDAPCOMMON* dapcomm) { int i,j; NCerror ncstat = NC_NOERR; int varid; NClist* varnodes = dapcomm->cdf.ddsroot->tree->varnodes; NC* drno = dapcomm->controller; char* definename; ASSERT((varnodes != NULL)); for(i=0;iinvisible) continue; if(var->array.basevar != NULL) continue; #ifdef DEBUG1 fprintf(stderr,"buildvars.candidate=|%s|\n",var->ncfullname); #endif vardims = var->array.dimsetall; ncrank = nclistlength(vardims); if(ncrank > 0) { for(j=0;jncid; } } definename = getdefinename(var); #ifdef DEBUG1 fprintf(stderr,"define: var: %s/%s", definename,var->ocname); if(ncrank > 0) { int k; for(k=0;kdim.declsize); } } fprintf(stderr,"\n"); #endif ncstat = nc_def_var(drno->substrate, definename, var->externaltype, ncrank, (ncrank==0?NULL:dimids), &varid); nullfree(definename); if(ncstat != NC_NOERR) { THROWCHK(ncstat); goto done; } var->ncid = varid; if(var->attributes != NULL) { for(j=0;jattributes);j++) { NCattribute* att = (NCattribute*)nclistget(var->attributes,j); ncstat = buildattribute(dapcomm,att,var->etype,varid); if(ncstat != NC_NOERR) goto done; } } /* Tag the variable with its DAP path */ if(dapparamcheck(dapcomm,"show","projection")) showprojection(dapcomm,var); } done: return THROW(ncstat); } static NCerror buildglobalattrs(NCDAPCOMMON* dapcomm, CDFnode* root) { int i; NCerror ncstat = NC_NOERR; const char* txt; char *nltxt, *p; NCbytes* buf = NULL; NClist* cdfnodes; NC* drno = dapcomm->controller; if(root->attributes != NULL) { for(i=0;iattributes);i++) { NCattribute* att = (NCattribute*)nclistget(root->attributes,i); ncstat = buildattribute(dapcomm,att,NC_NAT,NC_GLOBAL); if(ncstat != NC_NOERR) goto done; } } /* Add global attribute identifying the sequence dimensions */ if(dapparamcheck(dapcomm,"show","seqdims")) { buf = ncbytesnew(); cdfnodes = dapcomm->cdf.ddsroot->tree->nodes; for(i=0;inctype != NC_Dimension) continue; if(DIMFLAG(dim,CDFDIMSEQ)) { char* cname = cdflegalname(dim->ocname); if(ncbyteslength(buf) > 0) ncbytescat(buf,", "); ncbytescat(buf,cname); nullfree(cname); } } if(ncbyteslength(buf) > 0) { ncstat = nc_put_att_text(drno->substrate,NC_GLOBAL,"_sequence_dimensions", ncbyteslength(buf),ncbytescontents(buf)); } } /* Define some additional system global attributes depending on show= clientparams*/ /* Ignore failures*/ if(dapparamcheck(dapcomm,"show","translate")) { /* Add a global attribute to show the translation */ ncstat = nc_put_att_text(drno->substrate,NC_GLOBAL,"_translate", strlen("netcdf-3"),"netcdf-3"); } if(dapparamcheck(dapcomm,"show","url")) { if(dapcomm->oc.rawurltext != NULL) ncstat = nc_put_att_text(drno->substrate,NC_GLOBAL,"_url", strlen(dapcomm->oc.rawurltext),dapcomm->oc.rawurltext); } if(dapparamcheck(dapcomm,"show","dds")) { txt = NULL; if(dapcomm->cdf.ddsroot != NULL) txt = oc_tree_text(dapcomm->oc.conn,dapcomm->cdf.ddsroot->ocnode); if(txt != NULL) { /* replace newlines with spaces*/ nltxt = nulldup(txt); for(p=nltxt;*p;p++) {if(*p == '\n' || *p == '\r' || *p == '\t') {*p = ' ';}}; ncstat = nc_put_att_text(drno->substrate,NC_GLOBAL,"_dds",strlen(nltxt),nltxt); nullfree(nltxt); } } if(dapparamcheck(dapcomm,"show","das")) { txt = NULL; if(dapcomm->oc.ocdasroot != NULL) txt = oc_tree_text(dapcomm->oc.conn,dapcomm->oc.ocdasroot); if(txt != NULL) { nltxt = nulldup(txt); for(p=nltxt;*p;p++) {if(*p == '\n' || *p == '\r' || *p == '\t') {*p = ' ';}}; ncstat = nc_put_att_text(drno->substrate,NC_GLOBAL,"_das",strlen(nltxt),nltxt); nullfree(nltxt); } } done: ncbytesfree(buf); return THROW(ncstat); } static NCerror buildattribute(NCDAPCOMMON* dapcomm, NCattribute* att, nc_type vartype, int varid) { int i; NCerror ncstat = NC_NOERR; unsigned int nvalues = nclistlength(att->values); NC* drno = dapcomm->controller; /* If the type of the attribute is string, then we need*/ /* to convert to a single character string by concatenation. modified: 10/23/09 to insert newlines. modified: 10/28/09 to interpret escapes */ if(att->etype == NC_STRING || att->etype == NC_URL) { char* newstring = NULL; size_t newlen = 0; for(i=0;ivalues,i); newlen += (1+strlen(s)); } if(newlen > 0) newstring = (char*)malloc(newlen); MEMCHECK(newstring,NC_ENOMEM); newstring[0] = '\0'; for(i=0;ivalues,i); if(i > 0) strcat(newstring,"\n"); strcat(newstring,s); } dapexpandescapes(newstring); if(newstring[0]=='\0') ncstat = nc_put_att_text(drno->substrate,varid,att->name,1,newstring); else ncstat = nc_put_att_text(drno->substrate,varid,att->name,strlen(newstring),newstring); free(newstring); } else { nc_type atype; unsigned int typesize; void* mem = NULL; /* It turns out that some servers upgrade the type of _FillValue in order to correctly preserve the original value. However, since the type of the underlying variable is not changes, we get a type mismatch. So, make sure the type of the fillvalue is the same as that of the controlling variable. */ if(varid != NC_GLOBAL && strcmp(att->name,"_FillValue")==0) atype = nctypeconvert(dapcomm,vartype); else atype = nctypeconvert(dapcomm,att->etype); typesize = nctypesizeof(atype); if (nvalues > 0) { mem = malloc(typesize * nvalues); #ifdef _MSC_VER _ASSERTE(_CrtCheckMemory()); #endif } ncstat = dapcvtattrval(atype,mem,att->values); #ifdef _MSC_VER _ASSERTE(_CrtCheckMemory()); #endif ncstat = nc_put_att(drno->substrate,varid,att->name,atype,nvalues,mem); #ifdef _MSC_VER _ASSERTE(_CrtCheckMemory()); #endif if (mem != NULL) free(mem); } return THROW(ncstat); } static char* getdefinename(CDFnode* node) { char* spath = NULL; NClist* path = NULL; switch (node->nctype) { case NC_Atomic: /* The define name is same as the fullname with elided nodes */ path = nclistnew(); collectnodepath(node,path,!WITHDATASET); spath = makepathstring(path,".",PATHNC|PATHELIDE); nclistfree(path); break; case NC_Dimension: /* Return just the node's ncname */ spath = nulldup(node->ncbasename); break; default: PANIC("unexpected nctype"); } return spath; } int NCDAP_ping(const char* url) { OCerror ocstat = OC_NOERR; ocstat = oc_ping(url); return ocerrtoncerr(ocstat); } int NCD2_inq_format_extended(int ncid, int* formatp, int* modep) { NC* nc; int ncstatus = NC_check_id(ncid, (NC**)&nc); if(ncstatus != NC_NOERR) return THROW(ncstatus); if(modep) *modep = nc->mode; if(formatp) *formatp = NC_FORMATX_DAP2; return NC_NOERR; } /**************************************************/ /* Support functions */ /* Provide short and/or unified names for dimensions. This must mimic lib-ncdap, which is difficult. */ NCerror computecdfdimnames(NCDAPCOMMON* nccomm) { int i,j; char tmp[NC_MAX_NAME*2]; NClist* conflicts = nclistnew(); NClist* varnodes = nccomm->cdf.ddsroot->tree->varnodes; NClist* alldims; NClist* basedims; /* Collect all dimension nodes from dimsetall lists */ alldims = getalldims(nccomm,0); /* Assign an index to all anonymous dimensions vis-a-vis its containing variable */ for(i=0;iarray.dimsetall);j++) { CDFnode* dim = (CDFnode*)nclistget(var->array.dimsetall,j); if(dim->ocname != NULL) continue; /* not anonymous */ computedimindexanon(dim,var); } } /* Unify dimensions by defining one dimension as the "base" dimension, and make all "equivalent" dimensions point to the base dimension. 1. Equivalent means: same size and both have identical non-null names. 2. Dims with same name but different sizes will be handled separately */ for(i=0;idim.basedim != NULL) continue; /* already processed*/ for(j=i+1;jdim.basedim != NULL) continue; /* already processed */ if(!equivalentdim(basedim,dupdim)) continue; dupdim->dim.basedim = basedim; /* equate */ #ifdef DEBUG1 fprintf(stderr,"assign: %s/%s -> %s/%s\n", basedim->dim.array->ocname,basedim->ocname, dupdim->dim.array->ocname,dupdim->ocname ); #endif } } /* Next case: same name and different sizes*/ /* => rename second dim */ for(i=0;idim.basedim != NULL) continue; /* Collect all conflicting dimensions */ nclistclear(conflicts); for(j=i+1;jdim.basedim != NULL) continue; if(dim->ocname == NULL && basedim->ocname == NULL) continue; if(dim->ocname == NULL || basedim->ocname == NULL) continue; if(strcmp(dim->ocname,basedim->ocname)!=0) continue; if(dim->dim.declsize == basedim->dim.declsize) continue; #ifdef DEBUG2 fprintf(stderr,"conflict: %s[%lu] %s[%lu]\n", basedim->ncfullname,(unsigned long)basedim->dim.declsize, dim->ncfullname,(unsigned long)dim->dim.declsize); #endif nclistpush(conflicts,(void*)dim); } /* Give all the conflicting dimensions an index */ for(j=0;jdim.index1 = j+1; } } nclistfree(conflicts); /* Replace all non-base dimensions with their base dimension */ for(i=0;iarray.dimsetall); replacedims(node->array.dimsetplus); replacedims(node->array.dimset0); } /* Collect list of all basedims */ basedims = nclistnew(); for(i=0;idim.basedim == NULL) { if(!nclistcontains(basedims,(void*)dim)) { nclistpush(basedims,(void*)dim); } } } nccomm->cdf.ddsroot->tree->dimnodes = basedims; /* cleanup */ nclistfree(alldims); /* Assign ncbasenames and ncfullnames to base dimensions */ for(i=0;idim.array; if(dim->dim.basedim != NULL) PANIC1("nonbase basedim: %s\n",dim->ocname); /* stringdim names are already assigned */ if(dim->ocname == NULL) { /* anonymous: use the index to compute the name */ snprintf(tmp,sizeof(tmp),"%s_%d", var->ncfullname,dim->dim.index1-1); nullfree(dim->ncbasename); dim->ncbasename = cdflegalname(tmp); nullfree(dim->ncfullname); dim->ncfullname = nulldup(dim->ncbasename); } else { /* !anonymous; use index1 if defined */ char* legalname = cdflegalname(dim->ocname); nullfree(dim->ncbasename); if(dim->dim.index1 > 0) {/* need to fix conflicting names (see above) */ char sindex[64]; snprintf(sindex,sizeof(sindex),"_%d",dim->dim.index1); dim->ncbasename = (char*)malloc(strlen(sindex)+strlen(legalname)+1); if(dim->ncbasename == NULL) {nullfree(legalname); return NC_ENOMEM;} strcpy(dim->ncbasename,legalname); strcat(dim->ncbasename,sindex); nullfree(legalname); } else {/* standard case */ dim->ncbasename = legalname; } nullfree(dim->ncfullname); dim->ncfullname = nulldup(dim->ncbasename); } } /* Verify unique and defined names for dimensions*/ for(i=0;idim.basedim != NULL) PANIC1("nonbase basedim: %s\n",dim1->ncbasename); if(dim1->ncbasename == NULL || dim1->ncfullname == NULL) PANIC1("missing dim names: %s",dim1->ocname); /* search backward so we can delete duplicates */ for(j=nclistlength(basedims)-1;j>i;j--) { CDFnode* dim2 = (CDFnode*)nclistget(basedims,j); if(strcmp(dim1->ncfullname,dim2->ncfullname)==0) { /* complain and suppress one of them */ fprintf(stderr,"duplicate dim names: %s[%lu] %s[%lu]\n", dim1->ncfullname,(unsigned long)dim1->dim.declsize, dim2->ncfullname,(unsigned long)dim2->dim.declsize); nclistremove(basedims,j); } } } #ifdef DEBUG for(i=0;incfullname,(long)dim->dim.declsize); } #endif return NC_NOERR; } int constrainable(NCURI* durl) { char** protocol = constrainableprotocols; for(;*protocol;protocol++) { if(strcmp(durl->protocol,*protocol)==0) return 1; } return 0; } /* Note: this routine only applies some common client parameters, other routines may apply specific ones. */ static NCerror applyclientparams(NCDAPCOMMON* nccomm) { int i,len; int dfaltstrlen = DEFAULTSTRINGLENGTH; int dfaltseqlim = DEFAULTSEQLIMIT; const char* value; char tmpname[NC_MAX_NAME+32]; char* pathstr; OClink conn = nccomm->oc.conn; unsigned long limit; ASSERT(nccomm->oc.url != NULL); nccomm->cdf.cache->cachelimit = DFALTCACHELIMIT; value = oc_clientparam_get(conn,"cachelimit"); limit = getlimitnumber(value); if(limit > 0) nccomm->cdf.cache->cachelimit = limit; nccomm->cdf.fetchlimit = DFALTFETCHLIMIT; value = oc_clientparam_get(conn,"fetchlimit"); limit = getlimitnumber(value); if(limit > 0) nccomm->cdf.fetchlimit = limit; nccomm->cdf.smallsizelimit = DFALTSMALLLIMIT; value = oc_clientparam_get(conn,"smallsizelimit"); limit = getlimitnumber(value); if(limit > 0) nccomm->cdf.smallsizelimit = limit; nccomm->cdf.cache->cachecount = DFALTCACHECOUNT; #ifdef HAVE_GETRLIMIT { struct rlimit rl; if(getrlimit(RLIMIT_NOFILE, &rl) >= 0) { nccomm->cdf.cache->cachecount = (size_t)(rl.rlim_cur / 2); } } #endif value = oc_clientparam_get(conn,"cachecount"); limit = getlimitnumber(value); if(limit > 0) nccomm->cdf.cache->cachecount = limit; /* Ignore limit if not caching */ if(!FLAGSET(nccomm->controls,NCF_CACHE)) nccomm->cdf.cache->cachecount = 0; if(oc_clientparam_get(conn,"nolimit") != NULL) dfaltseqlim = 0; value = oc_clientparam_get(conn,"limit"); if(value != NULL && strlen(value) != 0) { if(sscanf(value,"%d",&len) && len > 0) dfaltseqlim = len; } nccomm->cdf.defaultsequencelimit = dfaltseqlim; /* allow embedded _ */ value = oc_clientparam_get(conn,"stringlength"); if(value != NULL && strlen(value) != 0) { if(sscanf(value,"%d",&len) && len > 0) dfaltstrlen = len; } nccomm->cdf.defaultstringlength = dfaltstrlen; /* String dimension limits apply to variables */ for(i=0;icdf.ddsroot->tree->varnodes);i++) { CDFnode* var = (CDFnode*)nclistget(nccomm->cdf.ddsroot->tree->varnodes,i); /* Define the client param stringlength for this variable*/ var->maxstringlength = 0; /* => use global dfalt */ strcpy(tmpname,"stringlength_"); pathstr = makeocpathstring(conn,var->ocnode,"."); strncat(tmpname,pathstr,NC_MAX_NAME); nullfree(pathstr); value = oc_clientparam_get(conn,tmpname); if(value != NULL && strlen(value) != 0) { if(sscanf(value,"%d",&len) && len > 0) var->maxstringlength = len; } } /* Sequence limits apply to sequences */ for(i=0;icdf.ddsroot->tree->nodes);i++) { CDFnode* var = (CDFnode*)nclistget(nccomm->cdf.ddsroot->tree->nodes,i); if(var->nctype != NC_Sequence) continue; var->sequencelimit = dfaltseqlim; strcpy(tmpname,"nolimit_"); pathstr = makeocpathstring(conn,var->ocnode,"."); strncat(tmpname,pathstr,NC_MAX_NAME); if(oc_clientparam_get(conn,tmpname) != NULL) var->sequencelimit = 0; strcpy(tmpname,"limit_"); strncat(tmpname,pathstr,NC_MAX_NAME); value = oc_clientparam_get(conn,tmpname); if(value != NULL && strlen(value) != 0) { if(sscanf(value,"%d",&len) && len > 0) var->sequencelimit = len; } nullfree(pathstr); } /* test for the appropriate fetch flags */ value = oc_clientparam_get(conn,"fetch"); if(value != NULL && strlen(value) > 0) { if(value[0] == 'd' || value[0] == 'D') { SETFLAG(nccomm->controls,NCF_ONDISK); } } /* test for the force-whole-var flag */ value = oc_clientparam_get(conn,"wholevar"); if(value != NULL) { SETFLAG(nccomm->controls,NCF_WHOLEVAR); } return NC_NOERR; } /** * Given an anonymous dimension, compute the * effective 0-based index wrt to the specified var. * The result should mimic the libnc-dap indices. */ static void computedimindexanon(CDFnode* dim, CDFnode* var) { int i; NClist* dimset = var->array.dimsetall; for(i=0;idim.index1=i+1; return; } } } /* Replace dims in a list with their corresponding basedim */ static void replacedims(NClist* dims) { int i; for(i=0;idim.basedim; if(basedim == NULL) continue; nclistset(dims,i,(void*)basedim); } } /** Two dimensions are equivalent if 1. they have the same size 2. neither are anonymous 3. they ave the same names. */ static int equivalentdim(CDFnode* basedim, CDFnode* dupdim) { if(dupdim->dim.declsize != basedim->dim.declsize) return 0; if(basedim->ocname == NULL && dupdim->ocname == NULL) return 0; if(basedim->ocname == NULL || dupdim->ocname == NULL) return 0; if(strcmp(dupdim->ocname,basedim->ocname) != 0) return 0; return 1; } static void getalldimsa(NClist* dimset, NClist* alldims) { int i; for(i=0;incfullname,(unsigned long)dim->dim.declsize); #endif nclistpush(alldims,(void*)dim); } } } /* Accumulate a set of all the known dimensions vis-a-vis defined variables */ NClist* getalldims(NCDAPCOMMON* nccomm, int visibleonly) { int i; NClist* alldims = nclistnew(); NClist* varnodes = nccomm->cdf.ddsroot->tree->varnodes; /* get bag of all dimensions */ for(i=0;iinvisible) { getalldimsa(node->array.dimsetall,alldims); } } return alldims; } static NCerror addstringdims(NCDAPCOMMON* dapcomm) { /* for all variables of string type, we will need another dimension to represent the string; Accumulate the needed sizes and create the dimensions with a specific name: either as specified in DODS{...} attribute set or defaulting to the variable name. All such dimensions are global. */ int i; NClist* varnodes = dapcomm->cdf.ddsroot->tree->varnodes; CDFnode* globalsdim = NULL; char dimname[4096]; size_t dimsize; /* Start by creating the global string dimension */ snprintf(dimname,sizeof(dimname),"maxStrlen%lu", (unsigned long)dapcomm->cdf.defaultstringlength); globalsdim = makecdfnode(dapcomm, dimname, OC_Dimension, NULL, dapcomm->cdf.ddsroot); nclistpush(dapcomm->cdf.ddsroot->tree->nodes,(void*)globalsdim); DIMFLAGSET(globalsdim,CDFDIMSTRING); globalsdim->dim.declsize = dapcomm->cdf.defaultstringlength; globalsdim->dim.declsize0 = globalsdim->dim.declsize; globalsdim->dim.array = dapcomm->cdf.ddsroot; globalsdim->ncbasename = cdflegalname(dimname); globalsdim->ncfullname = nulldup(globalsdim->ncbasename); dapcomm->cdf.globalstringdim = globalsdim; for(i=0;ietype != NC_STRING && var->etype != NC_URL) continue; dimsize = 0; if(var->dodsspecial.maxstrlen > 0) dimsize = var->dodsspecial.maxstrlen; else dimsize = var->maxstringlength; /* check is a variable-specific string length was specified */ if(dimsize == 0) sdim = dapcomm->cdf.globalstringdim; /* use default */ else { /* create a psuedo dimension for the charification of the string*/ if(var->dodsspecial.dimname != NULL) { strncpy(dimname,var->dodsspecial.dimname,sizeof(dimname)); dimname[sizeof(dimname)-1] = '\0'; } else snprintf(dimname,sizeof(dimname),"maxStrlen%lu", (unsigned long)dimsize); sdim = makecdfnode(dapcomm, dimname, OC_Dimension, NULL, dapcomm->cdf.ddsroot); if(sdim == NULL) return THROW(NC_ENOMEM); nclistpush(dapcomm->cdf.ddsroot->tree->nodes,(void*)sdim); DIMFLAGSET(sdim,CDFDIMSTRING); sdim->dim.declsize = dimsize; sdim->dim.declsize0 = dimsize; sdim->dim.array = var; sdim->ncbasename = cdflegalname(sdim->ocname); sdim->ncfullname = nulldup(sdim->ncbasename); } /* tag the variable with its string dimension*/ var->array.stringdim = sdim; } return NC_NOERR; } static NCerror defrecorddim(NCDAPCOMMON* dapcomm) { unsigned int i; NCerror ncstat = NC_NOERR; NClist* basedims; if(dapcomm->cdf.recorddimname == NULL) return NC_NOERR; /* ignore */ /* Locate the base dimension matching the record dim */ basedims = dapcomm->cdf.ddsroot->tree->dimnodes; for(i=0;iocname,dapcomm->cdf.recorddimname) != 0) continue; DIMFLAGSET(dim,CDFDIMRECORD); dapcomm->cdf.recorddim = dim; break; } return ncstat; } static NCerror defseqdims(NCDAPCOMMON* dapcomm) { unsigned int i = 0; NCerror ncstat = NC_NOERR; int seqdims = 1; /* default is to compute seq dims counts */ /* Does the user want to compute actual sequence sizes? */ if(dapparamvalue(dapcomm,"noseqdims")) seqdims = 0; /* Compute and define pseudo dimensions for sequences meeting the following qualifications: 1. all parents (transitively) of the sequence must be either a dataset or a scalar structure. 2. it must be possible to find a usable sequence constraint. All other sequences will be ignored. */ for(i=0;icdf.ddsroot->tree->seqnodes);i++) { CDFnode* seq = (CDFnode*)nclistget(dapcomm->cdf.ddsroot->tree->seqnodes,i); size_t seqsize = 0; CDFnode* sqdim = NULL; CDFnode* container; /* Does this sequence match the requirements for use ? */ seq->usesequence = 1; /* assume */ for(container=seq->container;container != NULL;container=container->container) { if(container->nctype == NC_Dataset) break; if(container->nctype != NC_Structure || nclistlength(container->array.dimset0) > 0) {seq->usesequence = 0; break;}/* no good */ } /* Does the user want us to compute the actual sequence dim size? */ if(seq->usesequence && seqdims) { ncstat = getseqdimsize(dapcomm,seq,&seqsize); if(ncstat != NC_NOERR) { /* Cannot read sequence; mark as unusable */ seq->usesequence = 0; } } else { /* !seqdims default to size = 1 */ seqsize = 1; } if(seq->usesequence) { /* Note: we are making the dimension in the dds root tree */ ncstat = makeseqdim(dapcomm,seq,seqsize,&sqdim); if(ncstat) goto fail; seq->array.seqdim = sqdim; } else seq->array.seqdim = NULL; } fail: return ncstat; } static NCerror showprojection(NCDAPCOMMON* dapcomm, CDFnode* var) { int i,rank; NCerror ncstat = NC_NOERR; NCbytes* projection = ncbytesnew(); NClist* path = nclistnew(); NC* drno = dapcomm->controller; /* Collect the set of DDS node name forming the xpath */ collectnodepath(var,path,WITHOUTDATASET); for(i=0;i 0) ncbytescat(projection,"."); ncbytescat(projection,node->ocname); } nclistfree(path); /* Now, add the dimension info */ rank = nclistlength(var->array.dimset0); for(i=0;iarray.dimset0,i); char tmp[32]; ncbytescat(projection,"["); snprintf(tmp,sizeof(tmp),"%lu",(unsigned long)dim->dim.declsize); ncbytescat(projection,tmp); ncbytescat(projection,"]"); } /* Define the attribute */ ncstat = nc_put_att_text(getncid(drno),var->ncid, "_projection", ncbyteslength(projection), ncbytescontents(projection)); ncbytesfree(projection); return ncstat; } static NCerror getseqdimsize(NCDAPCOMMON* dapcomm, CDFnode* seq, size_t* sizep) { NCerror ncstat = NC_NOERR; OCerror ocstat = OC_NOERR; OClink conn = dapcomm->oc.conn; OCdatanode rootcontent = NULL; OCddsnode ocroot; CDFnode* dxdroot; CDFnode* xseq; NCbytes* seqcountconstraints = ncbytesnew(); size_t seqsize = 0; /* Read the minimal amount of data in order to get the count */ /* If the url is unconstrainable, then get the whole thing */ computeseqcountconstraints(dapcomm,seq,seqcountconstraints); #ifdef DEBUG fprintf(stderr,"seqcountconstraints: %s\n",ncbytescontents(seqcountconstraints)); #endif /* Fetch the minimal data */ if(FLAGSET(dapcomm->controls,NCF_UNCONSTRAINABLE)) ncstat = dap_fetch(dapcomm,conn,NULL,OCDATADDS,&ocroot); else ncstat = dap_fetch(dapcomm,conn,ncbytescontents(seqcountconstraints),OCDATADDS,&ocroot); if(ncstat) goto fail; ncstat = buildcdftree(dapcomm,ocroot,OCDATA,&dxdroot); if(ncstat) goto fail; /* attach DATADDS to DDS */ ncstat = attach(dxdroot,seq); if(ncstat) goto fail; /* WARNING: we are now switching to datadds tree */ xseq = seq->attachment; ncstat = countsequence(dapcomm,xseq,&seqsize); if(ncstat != NC_NOERR) goto fail; #ifdef DEBUG fprintf(stderr,"sequencesize: %s = %lu\n",seq->ocname,(unsigned long)seqsize); #endif /* throw away the fetch'd trees */ unattach(dapcomm->cdf.ddsroot); freecdfroot(dxdroot); #if 1 /*Note sure what this is doing?*/ if(ncstat != NC_NOERR) { /* Cannot get DATADDDS*/ char* code; char* msg; long httperr; oc_svcerrordata(dapcomm->oc.conn,&code,&msg,&httperr); if(code != NULL) { nclog(NCLOGERR,"oc_fetch_datadds failed: %s %s %l", code,msg,httperr); } ocstat = OC_NOERR; } #endif if(sizep) *sizep = seqsize; fail: ncbytesfree(seqcountconstraints); oc_data_free(conn,rootcontent); if(ocstat != OC_NOERR) ncstat = ocerrtoncerr(ocstat); return ncstat; } static NCerror makeseqdim(NCDAPCOMMON* dapcomm, CDFnode* seq, size_t count, CDFnode** sqdimp) { CDFnode* sqdim; CDFnode* root = seq->root; CDFtree* tree = root->tree; /* build the dimension with given size; keep the dimension anonymous */ sqdim = makecdfnode(dapcomm,seq->ocname,OC_Dimension,NULL,root); if(sqdim == NULL) return THROW(NC_ENOMEM); nclistpush(tree->nodes,(void*)sqdim); /* Assign a name to the sequence node */ sqdim->ncbasename = cdflegalname(seq->ocname); sqdim->ncfullname = nulldup(sqdim->ncbasename); DIMFLAGSET(sqdim,CDFDIMSEQ); sqdim->dim.declsize = count; sqdim->dim.declsize0 = count; sqdim->dim.array = seq; if(sqdimp) *sqdimp = sqdim; return NC_NOERR; } static NCerror countsequence(NCDAPCOMMON* dapcomm, CDFnode* xseq, size_t* sizep) { unsigned int i; NClist* path = nclistnew(); int index; OCerror ocstat = OC_NOERR; NCerror ncstat = NC_NOERR; OClink conn = dapcomm->oc.conn; size_t recordcount; CDFnode* xroot; OCdatanode data = NULL; ASSERT((xseq->nctype == NC_Sequence)); /* collect the path to the sequence node */ collectnodepath(xseq,path,WITHDATASET); /* Get tree root */ ASSERT(xseq->root == (CDFnode*)nclistget(path,0)); xroot = xseq->root; ocstat = oc_data_getroot(conn,xroot->tree->ocroot,&data); if(ocstat) goto done; /* Basically we use the path to walk the data instances to reach the sequence instance */ for(i=0;inctype == NC_Structure || current->nctype == NC_Dataset) { if(nclistlength(current->array.dimset0) > 0) { /* Cannot handle this case */ ncstat = THROW(NC_EDDS); goto done; } /* get next node in path; structure/dataset => exists */ next = (CDFnode*)nclistget(path,i+1); index = fieldindex(current,next); /* Move to appropriate field */ ocstat = oc_data_ithfield(conn,data,index,&nextdata); if(ocstat) goto done; oc_data_free(conn,data); data = nextdata; /* set up for next loop iteration */ } else if(current->nctype == NC_Sequence) { /* Check for nested Sequences */ if(current != xseq) { /* Cannot handle this case */ ncstat = THROW(NC_EDDS); goto done; } /* Get the record count */ ocstat = oc_data_recordcount(conn,data,&recordcount); if(sizep) *sizep = recordcount; oc_data_free(conn,data); /* reclaim */ break; /* leave the loop */ } else { PANIC("unexpected mode"); return NC_EINVAL; } } done: nclistfree(path); if(ocstat != OC_NOERR) ncstat = ocerrtoncerr(ocstat); return THROW(ncstat); } static NCerror freeNCDAPCOMMON(NCDAPCOMMON* dapcomm) { freenccache(dapcomm,dapcomm->cdf.cache); nclistfree(dapcomm->cdf.projectedvars); nullfree(dapcomm->cdf.recorddimname); /* free the trees */ freecdfroot(dapcomm->cdf.ddsroot); dapcomm->cdf.ddsroot = NULL; freecdfroot(dapcomm->cdf.fullddsroot); dapcomm->cdf.fullddsroot = NULL; if(dapcomm->oc.ocdasroot != NULL) oc_root_free(dapcomm->oc.conn,dapcomm->oc.ocdasroot); dapcomm->oc.ocdasroot = NULL; oc_close(dapcomm->oc.conn); /* also reclaims remaining OC trees */ ncurifree(dapcomm->oc.url); nullfree(dapcomm->oc.urltext); nullfree(dapcomm->oc.rawurltext); dcefree((DCEnode*)dapcomm->oc.dapconstraint); dapcomm->oc.dapconstraint = NULL; free(dapcomm); return NC_NOERR; } static size_t fieldindex(CDFnode* parent, CDFnode* child) { unsigned int i; for(i=0;isubnodes);i++) { CDFnode* node = (CDFnode*)nclistget(parent->subnodes,i); if(node == child) return i; } return -1; } /* This is more complex than one might think. We want to find a path to a variable inside the given node so that we can ask for a single instance of that variable to minimize the amount of data we retrieve. However, we want to avoid passing through any nested sequence. This is possible because of the way that sequencecheck() works. TODO: some servers will not accept an unconstrained fetch, so make sure we always have a constraint. */ static NCerror computeseqcountconstraints(NCDAPCOMMON* dapcomm, CDFnode* seq, NCbytes* seqcountconstraints) { int i,j; NClist* path = NULL; CDFnode* var = NULL; ASSERT(seq->nctype == NC_Sequence); computeseqcountconstraintsr(dapcomm,seq,&var); ASSERT((var != NULL)); /* Compute var path */ path = nclistnew(); collectnodepath(var,path,WITHOUTDATASET); /* construct the projection path using minimal index values */ for(i=0;i 0) ncbytescat(seqcountconstraints,"."); ncbytescat(seqcountconstraints,node->ocname); if(node == seq) { /* Use the limit */ if(node->sequencelimit > 0) { char tmp[64]; snprintf(tmp,sizeof(tmp),"[0:%lu]", (unsigned long)(node->sequencelimit - 1)); ncbytescat(seqcountconstraints,tmp); } } else if(nclistlength(node->array.dimset0) > 0) { int ndims = nclistlength(node->array.dimset0); for(j=0;jarray.dimset0,j); if(DIMFLAG(dim,CDFDIMSTRING)) { ASSERT((j == (ndims - 1))); break; } ncbytescat(seqcountconstraints,"[0]"); } } } /* Finally, add in any selection from the original URL */ if(dapcomm->oc.url->selection != NULL) ncbytescat(seqcountconstraints,dapcomm->oc.url->selection); nclistfree(path); return NC_NOERR; } /* Given an existing candidate, see if we prefer newchoice */ static CDFnode* prefer(CDFnode* candidate, CDFnode* newchoice) { nc_type newtyp; nc_type cantyp; int newisstring; int canisstring; int newisscalar; int canisscalar; /* always choose !null over null */ if(newchoice == NULL) return candidate; if(candidate == NULL) return newchoice; newtyp = newchoice->etype; cantyp = candidate->etype; newisstring = (newtyp == NC_STRING || newtyp == NC_URL); canisstring = (cantyp == NC_STRING || cantyp == NC_URL); newisscalar = (nclistlength(newchoice->array.dimset0) == 0); canisscalar = (nclistlength(candidate->array.dimset0) == 0); ASSERT(candidate->nctype == NC_Atomic && newchoice->nctype == NC_Atomic); /* choose non-string over string */ if(canisstring && !newisstring) return newchoice; if(!canisstring && newisstring) return candidate; /* choose scalar over array */ if(canisscalar && !newisscalar) return candidate; if(!canisscalar && newisscalar) return candidate; /* otherwise choose existing candidate */ return candidate; } /* computeseqcountconstraints recursive helper function */ static void computeseqcountconstraintsr(NCDAPCOMMON* dapcomm, CDFnode* node, CDFnode** candidatep) { CDFnode* candidate; CDFnode* compound; unsigned int i; candidate = NULL; compound = NULL; if(node == NULL) return; for(i=0;isubnodes);i++) { CDFnode* subnode = (CDFnode*)nclistget(node->subnodes,i); if(subnode->nctype == NC_Structure || subnode->nctype == NC_Grid) compound = subnode; /* save for later recursion */ else if(subnode->nctype == NC_Atomic) candidate = prefer(candidate,subnode); } if(candidate == NULL && compound == NULL) { PANIC("cannot find candidate for seqcountconstraints for a sequence"); } else if(candidate != NULL && candidatep != NULL) { *candidatep = candidate; } else { /* compound != NULL by construction */ /* recurse on a nested grids or strucures */ computeseqcountconstraintsr(dapcomm,compound,candidatep); } } static unsigned long cdftotalsize(NClist* dimensions) { unsigned int i; unsigned long total = 1; if(dimensions != NULL) { for(i=0;idim.declsize; } } return total; } /* Estimate variables sizes and then resort the variable list by that size */ static void estimatevarsizes(NCDAPCOMMON* dapcomm) { int ivar; unsigned int rank; size_t totalsize = 0; for(ivar=0;ivarcdf.ddsroot->tree->varnodes);ivar++) { CDFnode* var = (CDFnode*)nclistget(dapcomm->cdf.ddsroot->tree->varnodes,ivar); NClist* ncdims = var->array.dimset0; rank = nclistlength(ncdims); if(rank == 0) { /* use instance size of the type */ var->estimatedsize = nctypesizeof(var->etype); #ifdef DEBUG1 fprintf(stderr,"scalar %s.estimatedsize = %lu\n", makecdfpathstring(var,"."),var->estimatedsize); #endif } else { unsigned long size = cdftotalsize(ncdims); size *= nctypesizeof(var->etype); #ifdef DEBUG1 fprintf(stderr,"array %s(%u).estimatedsize = %lu\n", makecdfpathstring(var,"."),rank,size); #endif var->estimatedsize = size; } totalsize += var->estimatedsize; } #ifdef DEBUG1 fprintf(stderr,"total estimatedsize = %lu\n",totalsize); #endif dapcomm->cdf.totalestimatedsize = totalsize; } static NCerror fetchpatternmetadata(NCDAPCOMMON* dapcomm) { NCerror ncstat = NC_NOERR; OCerror ocstat = OC_NOERR; OCddsnode ocroot = NULL; CDFnode* ddsroot = NULL; char* ce = NULL; /* Temporary hack: we need to get the selection string from the url */ /* Get (almost) unconstrained DDS; In order to handle functions correctly, those selections must always be included */ if(FLAGSET(dapcomm->controls,NCF_UNCONSTRAINABLE)) ce = NULL; else ce = nulldup(dapcomm->oc.url->selection); /* Get selection constrained DDS */ ncstat = dap_fetch(dapcomm,dapcomm->oc.conn,ce,OCDDS,&ocroot); if(ncstat != NC_NOERR) { /* Special Hack. If the protocol is file, then see if we can get the dds from the .dods file */ if(strcmp(dapcomm->oc.url->protocol,"file") != 0) { THROWCHK(ocstat); goto done; } /* Fetch the data dds */ ncstat = dap_fetch(dapcomm,dapcomm->oc.conn,ce,OCDATADDS,&ocroot); if(ncstat != NC_NOERR) { THROWCHK(ncstat); goto done; } /* Note what we did */ nclog(NCLOGWARN,"Cannot locate .dds file, using .dods file"); } /* Get selection constrained DAS */ ncstat = dap_fetch(dapcomm,dapcomm->oc.conn,ce,OCDAS,&dapcomm->oc.ocdasroot); if(ncstat != NC_NOERR) { /* Ignore but complain */ nclog(NCLOGWARN,"Could not read DAS; ignored"); dapcomm->oc.ocdasroot = NULL; ncstat = NC_NOERR; } /* Construct the netcdf cdf tree corresponding to the dds tree*/ ncstat = buildcdftree(dapcomm,ocroot,OCDDS,&ddsroot); if(ncstat != NC_NOERR) {THROWCHK(ncstat); goto done;} dapcomm->cdf.fullddsroot = ddsroot; ddsroot = NULL; /* avoid double reclaim */ /* Combine DDS and DAS */ if(dapcomm->oc.ocdasroot != NULL) { ncstat = dapmerge(dapcomm,dapcomm->cdf.fullddsroot, dapcomm->oc.ocdasroot); if(ncstat != NC_NOERR) {THROWCHK(ncstat); goto done;} } #ifdef DEBUG fprintf(stderr,"full pattern:\n%s",dumptree(dapcomm->cdf.fullddsroot)); #endif done: nullfree(ce); if(ocstat != OC_NOERR) ncstat = ocerrtoncerr(ocstat); return ncstat; } static NCerror fetchconstrainedmetadata(NCDAPCOMMON* dapcomm) { NCerror ncstat = NC_NOERR; OCerror ocstat = OC_NOERR; OCddsnode ocroot; CDFnode* ddsroot; /* constrained */ char* ce = NULL; if(FLAGSET(dapcomm->controls,NCF_UNCONSTRAINABLE)) ce = NULL; else ce = dcebuildconstraintstring(dapcomm->oc.dapconstraint); { ncstat = dap_fetch(dapcomm,dapcomm->oc.conn,ce,OCDDS,&ocroot); if(ncstat != NC_NOERR) {THROWCHK(ncstat); goto fail;} /* Construct our parallel dds tree; including attributes*/ ncstat = buildcdftree(dapcomm,ocroot,OCDDS,&ddsroot); if(ncstat) goto fail; ocroot = NULL; /* avoid duplicate reclaim */ dapcomm->cdf.ddsroot = ddsroot; ddsroot = NULL; /* to avoid double reclamation */ if(!FLAGSET(dapcomm->controls,NCF_UNCONSTRAINABLE)) { /* fix DAP server problem by adding back any inserting needed structure nodes */ ncstat = restruct(dapcomm, dapcomm->cdf.ddsroot,dapcomm->cdf.fullddsroot,dapcomm->oc.dapconstraint->projections); if(ncstat) goto fail; } #ifdef DEBUG fprintf(stderr,"constrained:\n%s",dumptree(dapcomm->cdf.ddsroot)); #endif /* Combine DDS and DAS */ if(dapcomm->oc.ocdasroot != NULL) { ncstat = dapmerge(dapcomm,dapcomm->cdf.ddsroot, dapcomm->oc.ocdasroot); if(ncstat != NC_NOERR) {THROWCHK(ncstat); goto fail;} } /* map the constrained DDS to the unconstrained DDS */ ncstat = mapnodes(dapcomm->cdf.ddsroot,dapcomm->cdf.fullddsroot); if(ncstat) goto fail; } fail: nullfree(ce); if(ocstat != OC_NOERR) ncstat = ocerrtoncerr(ocstat); return ncstat; } /* Suppress variables not in usable sequences*/ static NCerror suppressunusablevars(NCDAPCOMMON* dapcomm) { int i,j; int found = 1; NClist* path = nclistnew(); while(found) { found = 0; /* Walk backwards to aid removal semantics */ for(i=nclistlength(dapcomm->cdf.ddsroot->tree->varnodes)-1;i>=0;i--) { CDFnode* var = (CDFnode*)nclistget(dapcomm->cdf.ddsroot->tree->varnodes,i); /* See if this var is under an unusable sequence */ nclistclear(path); collectnodepath(var,path,WITHOUTDATASET); for(j=0;jnctype == NC_Sequence && !node->usesequence) { #ifdef DEBUG fprintf(stderr,"suppressing var in unusable sequence: %s.%s\n",node->ncfullname,var->ncbasename); #endif found = 1; break; } } if(found) break; } if(found) nclistremove(dapcomm->cdf.ddsroot->tree->varnodes,i); } nclistfree(path); return NC_NOERR; } /* For variables which have a zero size dimension, make them invisible. */ static NCerror fixzerodims(NCDAPCOMMON* dapcomm) { int i,j; for(i=0;icdf.ddsroot->tree->varnodes);i++) { CDFnode* var = (CDFnode*)nclistget(dapcomm->cdf.ddsroot->tree->varnodes,i); NClist* ncdims = var->array.dimsetplus; if(nclistlength(ncdims) == 0) continue; for(j=0;jdim.declsize == 0) { /* make node invisible */ var->invisible = 1; var->zerodim = 1; } } } return NC_NOERR; } static void applyclientparamcontrols(NCDAPCOMMON* dapcomm) { /* clear the flags */ CLRFLAG(dapcomm->controls,NCF_CACHE); CLRFLAG(dapcomm->controls,NCF_SHOWFETCH); CLRFLAG(dapcomm->controls,NCF_NC3); CLRFLAG(dapcomm->controls,NCF_NCDAP); CLRFLAG(dapcomm->controls,NCF_PREFETCH); CLRFLAG(dapcomm->controls,NCF_PREFETCH_EAGER); /* Turn on any default on flags */ SETFLAG(dapcomm->controls,DFALT_ON_FLAGS); SETFLAG(dapcomm->controls,(NCF_NC3|NCF_NCDAP)); /* enable/disable caching */ if(dapparamcheck(dapcomm,"cache",NULL)) SETFLAG(dapcomm->controls,NCF_CACHE); else if(dapparamcheck(dapcomm,"nocache",NULL)) CLRFLAG(dapcomm->controls,NCF_CACHE); /* enable/disable cache prefetch and lazy vs eager*/ if(dapparamcheck(dapcomm,"prefetch","eager")) { SETFLAG(dapcomm->controls,NCF_PREFETCH); SETFLAG(dapcomm->controls,NCF_PREFETCH_EAGER); } else if(dapparamcheck(dapcomm,"prefetch","lazy") || dapparamcheck(dapcomm,"prefetch",NULL)) { SETFLAG(dapcomm->controls,NCF_PREFETCH); CLRFLAG(dapcomm->controls,NCF_PREFETCH_EAGER); } else if(dapparamcheck(dapcomm,"noprefetch",NULL)) CLRFLAG(dapcomm->controls,NCF_PREFETCH); if(FLAGSET(dapcomm->controls,NCF_UNCONSTRAINABLE)) SETFLAG(dapcomm->controls,NCF_CACHE); if(dapparamcheck(dapcomm,"show","fetch")) SETFLAG(dapcomm->controls,NCF_SHOWFETCH); nclog(NCLOGNOTE,"Caching=%d",FLAGSET(dapcomm->controls,NCF_CACHE)); }