tape/multi_recorder.c

 /*
  * The idea behind the multi-recorder is that it is easier to reuse the recorder structure with logic
  * that anticipates the use of a different mechanism for determining the object to associate with each
  * property listed for the recorder.
  * The differences assumed by the multi-recorder are that the parent is not used to determine the object
  * that each property is associated with, or that the recorder is associated with, that the property
  * list will include the name of the object that the property will correspond to (and corresponds with
  * the parent object if no object is parsed from the string), and that the parent property may be
  * null.  The multi-recorder will also use the RECORDER_MAP struct in order to store the target
  * properties, rather than the PROPERTY struct.
  *     -Matt Hauer <d3p988>
  */
 
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include "gridlabd.h"
#include "object.h"
#include "aggregate.h"

#include "tape.h"
#include "file.h"
#include "odbc.h"

#ifndef WIN32
#define strtok_s strtok_r
#else
#ifdef __MINGW32__
char* strtok_t(char *str, const char *delim, char **nextp)
{
    char *ret;

    if (str == NULL)
    {
        str = *nextp;
    }

    str += strspn(str, delim);

    if (*str == '\0')
    {
        return NULL;
    }

    ret = str;

    str += strcspn(str, delim);

    if (*str)
    {
        *str++ = '\0';
    }

    *nextp = str;

    return ret;
} 

#define strtok_s strtok_t
#endif

#endif

CLASS *multi_recorder_class = NULL;
static OBJECT *last_recorder = NULL;

EXPORT int create_multi_recorder(OBJECT **obj, OBJECT *parent)
{
    *obj = gl_create_object(multi_recorder_class);
    if (*obj!=NULL)
    {
        struct recorder *my = OBJECTDATA(*obj,struct recorder);
        last_recorder = *obj;
        gl_set_parent(*obj,parent);
        strcpy(my->file,"");
        strcpy(my->multifile,"");
        strcpy(my->filetype,"txt");
        strcpy(my->delim,",");
        strcpy(my->mode, "file");
        strcpy(my->property,"(undefined)");
        my->interval = -1; /* transients only */
        my->dInterval = -1.0;
        my->last.ts = -1;
        strcpy(my->last.value,"");
        my->limit = 0;
        my->samples = 0;
        my->status = TS_INIT;
        my->trigger[0]='\0';
        my->format = 0;
        strcpy(my->plotcommands,"");
        my->target = gl_get_property(*obj,my->property,NULL);
        my->header_units = HU_DEFAULT;
        my->line_units = LU_DEFAULT;
        return 1;
    }
    return 0;
}

static int multi_recorder_open(OBJECT *obj)
{
    char32 type="file";
    char1024 fname="";
    char32 flags="w";
    struct recorder *my = OBJECTDATA(obj,struct recorder);
    TAPEFUNCS *tf = 0;

    my->interval = (int64)(my->dInterval/TS_SECOND);
    /* if prefix is omitted (no colons found) */
    if (sscanf(my->file,"%32[^:]:%1024[^:]:%[^:]",type,fname,flags)==1)
    {
        /* filename is file by default */
        strcpy(fname,my->file);
        strcpy(type,"file");
    }

    /* if no filename given */
    if (strcmp(fname,"")==0)

        /* use object name-id as default file name */
        sprintf(fname,"%s-%d.%s",obj->parent->oclass->name,obj->parent->id, my->filetype);

    /* open multiple-run input file & temp output file */
    if(my->type == FT_FILE && my->multifile[0] != 0){
        if(my->interval < 1){
            gl_error("multirecorder: transient recorders cannot use multi-run output files");
            return 0;
        }
        sprintf(my->multitempfile, "temp_%s", my->file);
        my->multifp = fopen(my->multitempfile, "w");
        if(my->multifp == NULL){
            gl_error("multirecorder: unable to open \'%s\' for multi-run output", my->multitempfile);
        } else {
            time_t now=time(NULL);

            my->inputfp = fopen(my->multifile, "r");

            // write header into temp file
            fprintf(my->multifp,"# file...... %s\n", my->file);
            fprintf(my->multifp,"# date...... %s", asctime(localtime(&now)));
#ifdef WIN32
            fprintf(my->multifp,"# user...... %s\n", getenv("USERNAME"));
            fprintf(my->multifp,"# host...... %s\n", getenv("MACHINENAME"));
#else
            fprintf(my->multifp,"# user...... %s\n", getenv("USER"));
            fprintf(my->multifp,"# host...... %s\n", getenv("HOST"));
#endif
            if(obj->parent){
                fprintf(my->multifp,"# target.... %s %d\n", obj->parent->oclass->name, obj->parent->id);
            } else {
                fprintf(my->multifp,"# target.... (none)\n");
            }
            fprintf(my->multifp,"# trigger... %s\n", my->trigger[0]=='\0'?"(none)":my->trigger);
            fprintf(my->multifp,"# interval.. %d\n", my->interval);
            fprintf(my->multifp,"# limit..... %d\n", my->limit);
            fprintf(my->multifp,"# property.. %s\n", my->property);
            //fprintf(my->multifp,"# timestamp,%s\n", my->property);
        }
        if(my->inputfp != NULL){
            char1024 inbuffer;
            char *data;
            int get_col = 0;
            do{
                if(0 != fgets(inbuffer, 1024, my->inputfp)){
                    char *end = strchr(inbuffer, '\n');
                    data = inbuffer+strlen("# file...... ");
                    if(end != 0){
                        *end = 0; // trim the trailing newline
                    }
                    //                     "# columns... "
                    if(strncmp(inbuffer, "# file", strlen("# file")) == 0){
                        ; // ignore
                    } else if(strncmp(inbuffer, "# date", strlen("# date")) == 0){
                        ; // ignore
                    } else if(strncmp(inbuffer, "# user", strlen("# user")) == 0){
                        ; // ignore
                    } else if(strncmp(inbuffer, "# host", strlen("# host")) == 0){
                        ; // ignore
                    } else if(strncmp(inbuffer, "# target", strlen("# target")) == 0){
                        // verify same target
                        char256 target;
                        if(obj->parent != 0){
                            sprintf(target, "%s %d", obj->parent->oclass->name, obj->parent->id);
                            if(0 != strncmp(target, data, strlen(data))){
                                gl_error("multirecorder:%i: re-recording target mismatch: was %s, now %s", obj->id, data, target);
                            }
                        } else {
                            if(strncmp("(none)", target, 6)){
                                gl_error("multirecorder:%i: re-recording target mismatch: was %s, now blank", obj->id, data);
                            }
                        }
                    } else if(strncmp(inbuffer, "# trigger", strlen("# trigger")) == 0){
                        // verify same trigger, or absence thereof
                        ;
                    } else if(strncmp(inbuffer, "# interval", strlen("# interval")) == 0){
                        // verify same interval
                        int interval = atoi(data);
                        if(interval != my->interval){
                            gl_error("multirecorder:%i: re-recording interval mismatch: was %i, now %i", obj->id, interval, my->interval);
                        }
                    } else if(strncmp(inbuffer, "# limit", strlen("# limit")) == 0){
                        // verify same limit
                        int limit = atoi(data);
                        if(limit != my->limit){
                            gl_error("multirecorder:%i: re-recording limit mismatch: was %i, now %i", obj->id, limit, my->limit);
                        }
                    } else if(strncmp(inbuffer, "# property", strlen("# property")) == 0){
                        // verify same columns
                        if(0 != strncmp(my->property, data, strlen(my->property))){
                            gl_error("multirecorder:%i: re-recording property mismatch: was %s, now %s", obj->id, data, my->property);
                        }
                        // next line is full header column list
                        get_col = 1;
                    }
                } else {
                    gl_error("multirecorder: error reading multi-read input file \'%s\'", my->multifile);
                    break;
                }
            } while(inbuffer[0] == '#' && get_col == 0);
            // get full column list
            if(0 != fgets(inbuffer, 1024, my->inputfp)){
                int rep=0;
                int replen = (int)strlen("# repetition");
                int len, lenmax = 1024, i = 0;
                char1024 propstr, shortstr;
                PROPERTY *tprop = my->target;
                gl_verbose("read last buffer");
                if(strncmp(inbuffer, "# repetition", replen) == 0){
                    char *trim;
                    rep = atoi(inbuffer + replen + 1); // skip intermediate space
                    ++rep;
                    fprintf(my->multifp, "# repetition %i\n", rep);
                    fgets(inbuffer, 1024, my->inputfp);
                    trim = strchr(inbuffer, '\n');
                    if(trim) *trim = 0;
                } else { // invalid input file or somesuch, we could error ... or we can trample onwards with our output file.
                    rep = 0;
                    fprintf(my->multifp, "# repetition %i\n", rep);
                }
                // following block matches below
                while(tprop != NULL){
                    sprintf(shortstr, ",%s(%i)", tprop->name, rep);
                    len = (int)strlen(shortstr);
                    if(len > lenmax){
                        gl_error("multirecorder: multi-run recorder output full property list is larger than the buffer, please start a new file!");
                        break; // will still print everything up to this one
                    }
                    strncpy(propstr+i, shortstr, len+1);
                    i += len;
                    tprop = tprop->next;
                }
                fprintf(my->multifp, "%s%s\n", inbuffer, propstr);
            }
        } else { /* new file, so write repetition & properties with (0) */
            char1024 propstr, shortstr;
/*                          *
 *      UPDATE THIS PART    *
 *                          */
            int len, lenmax = 1024, i = 0;
            PROPERTY *tprop = my->target;
            fprintf(my->multifp, "# repetition 0\n");
            // no string from previous runs to append new props to
            sprintf(propstr, "# timestamp");
            len = (int)strlen(propstr);
            lenmax-=len;
            i = len;
            // following block matches above
            while(tprop != NULL){
                sprintf(shortstr, ",%s(0)", tprop->name);
                len = (int)strlen(shortstr);
                if(len > lenmax){
                    gl_error("multirecorder: multi-run recorder output full property list is larger than the buffer, please start a new file!");
                    break; // will still print everything up to this one
                }
                strncpy(propstr+i, shortstr, len+1);
                i += len;
                tprop = tprop->next;
            }
            fprintf(my->multifp, "%s\n", propstr);
/*                          *
 *      End update part     *
 *                          */
        }
    }

    /* if type is file or file is stdin */
    tf = get_ftable(type);
    if(tf == NULL)
        return 0;
    my->ops = tf->recorder;
    if(my->ops == NULL)
        return 0;
    set_csv_options();

    // set out_property here
    {size_t offset = 0;
        char unit_buffer[1024];
        char *token = 0, *prop_ptr = 0, *unit_ptr = 0, *obj_ptr = 0;
        char objstr[1024], bigpropstr[1024], propstr[1024], unitstr[64];
        PROPERTY *prop = 0;
        UNIT *unit = 0;
        int first = 1;
        OBJECT *myobj = 0;
        switch(my->header_units){
            case HU_DEFAULT:
                strcpy(my->out_property, my->property);
                break;
            case HU_ALL:
                strcpy(unit_buffer, my->property);
                for(token = strtok(unit_buffer, ","); token != NULL; token = strtok(NULL, ",")){
                    unit = 0;
                    prop = 0;
                    unitstr[0] = 0;
                    propstr[0] = 0;
                    objstr[0] = 0;
                    prop_ptr = strchr(token, ':');
                    if(prop_ptr != 0){
                        unit_ptr = strchr(prop_ptr, '[');
                    } else {
                        unit_ptr = strchr(token, '[');
                    }
                    // detect if this points at a different object and split accordingly
                    if(prop_ptr == 0){
                        prop_ptr = token;
                        myobj = obj->parent;
                        strcpy(bigpropstr, token);
                    } else {
                        sscanf(token, "%[^:]:%[^\n\r\t;]", objstr, bigpropstr);
                        myobj = gl_get_object(objstr);
                        if(myobj == 0){
                            gl_error("multi_recorder:%d: unable to find object '%s'", obj->id, objstr);
                            return 0;
                        }
                    }
                    // split unit from property, if present
                    if(unit_ptr == 0){
                        // no explicit unit
                        prop = gl_get_property(myobj, bigpropstr,NULL);
                        if(prop == 0){
                            gl_error("multi_recorder:%d: unable to find property '%s' for object '%s'", obj->id, propstr, myobj->name);
                            return 0;
                        }

                        if(prop->ptype == PT_double){
                            strcpy(unitstr, prop->unit->name);
                        } else {
                            ; // not double, no unit, nothing to do
                        }
                        strcpy(propstr, bigpropstr);
                    } else {
                        // has explicit unit
                        if(2 == sscanf(bigpropstr, "%[A-Za-z0-9_.][%[^]\n,\0]", propstr, unitstr)){
                            unit = gl_find_unit(unitstr);
                            if(unit == 0){
                                gl_error("multi_recorder:%d: unable to find unit '%s' for property '%s'", obj->id, unitstr, propstr);
                                return 0;
                            }
                            prop = gl_get_property(myobj, propstr,NULL);
                            if(prop == 0){
                                gl_error("multi_recorder:%d: unable to find property '%s' for object '%s'", obj->id, propstr, myobj->name);
                                return 0;
                            }
                        } else {
                            gl_error("oops");
                        }
                    }
                    // check if property exists in object
                    // find property

/*                  // breakpoint
                    if(3 == sscanf(token, "%[A-Za-z0-9_.][%[^]\n,\0]:%[A-Za-z0-9_.][%[^]\n,\0]", objstr, propstr, unitstr)){
                        myobj = gl_get_object(objstr);
                    } else if(2 == sscanf(token, "%[A-Za-z0-9_.][%[^]\n,\0]", propstr, unitstr)){
                        unit = gl_find_unit(unitstr);
                        if(unit == 0){
                            gl_error("multi_recorder:%d: unable to find unit '%s' for property '%s'", obj->id, unitstr, propstr);
                            return 0;
                        }
                    }
                    prop = gl_get_property(obj->parent, propstr);
                    if(prop->unit != 0 && unit == 0){
                        unit = prop->unit;
                    }*/
                    // print the property, and if there is one, the unit
                    if(myobj != obj->parent){
                        // need to include target object name in string
                        if(unit != 0){
                            sprintf(my->out_property+offset, "%s%s:%s[%s]", (first ? "" : ","), myobj->name, propstr, (unitstr[0] ? unitstr : unit->name));
                            offset += strlen(propstr) + (first ? 0 : 1) + 2 + strlen(unitstr[0] ? unitstr : unit->name) + strlen(myobj->name) + 1;
                        } else {
                            sprintf(my->out_property+offset, "%s%s:%s", (first ? "" : ","), myobj->name, propstr);
                            offset += strlen(propstr) + (first ? 0 : 1 + strlen(myobj->name) + 1);
                        }
                    } else {
                        // parent object, so no explicit object name
                        if(unit != 0){
                            sprintf(my->out_property+offset, "%s%s[%s]", (first ? "" : ","), propstr, (unitstr[0] ? unitstr : unit->name));
                            offset += strlen(propstr) + (first ? 0 : 1) + 2 + strlen(unitstr[0] ? unitstr : unit->name);
                        } else {
                            sprintf(my->out_property+offset, "%s%s", (first ? "" : ","), propstr);
                            offset += strlen(propstr) + (first ? 0 : 1);
                        }
                    }
                    first = 0;
                }
                break;
            case HU_NONE:
                strcpy(unit_buffer, my->property);
                for(token = strtok(unit_buffer, ","); token != NULL; token = strtok(NULL, ",")){
                    if(2 == sscanf(token, "%[A-Za-z0-9_:.][%[^]\n,\0]", propstr, unitstr)){
                        ; // no logic change
                    }
                    // print just the property, regardless of type or explicitly declared property
                    sprintf(my->out_property+offset, "%s%s", (first ? "" : ","), propstr);
                    offset += strlen(propstr) + (first ? 0 : 1);
                    first = 0;
                }
                break;
            default:
                // error
                break;
        }
    }
    return my->ops->open(my, fname, flags);
}

static int write_multi_recorder(struct recorder *my, char *ts, char *value)
{
    return my->ops->write(my, ts, value);
}

static void close_multi_recorder(struct recorder *my)
{
    if (my->ops){
        my->ops->close(my);
    }
    if(my->multifp){
        if(0 != fclose(my->multifp)){
            gl_error("multirecorder: unable to close multi-run temp file \'%s\'", my->multitempfile);
            perror("fclose(): ");
        }

        my->multifp = 0; // since it's closed

        if(my->inputfp != NULL){
            fclose(my->inputfp);
            if(0 != remove(my->multifile)){ // old file
                gl_error("multirecorder: unable to remove out-of-data multi-run file \'%s\'", my->multifile);
                perror("remove(): ");
            }
        }
        if(0 != rename(my->multitempfile, my->multifile)){
            gl_error("multirecorder: unable to rename multi-run file \'%s\' to \'%s\'", my->multitempfile, my->multifile);
            perror("rename(): ");
        }
        
    }
}

static TIMESTAMP multi_recorder_write(OBJECT *obj)
{
    struct recorder *my = OBJECTDATA(obj,struct recorder);
    char ts[64]="0"; /* 0 = INIT */
    if (my->format==0)
    {
        if (my->last.ts>TS_ZERO)
        {
            DATETIME dt;
            gl_localtime(my->last.ts,&dt);
            gl_strtime(&dt,ts,sizeof(ts));
        }
        /* else leave INIT in the buffer */
    }
    else
        sprintf(ts,"%" FMT_INT64 "d", my->last.ts);
    if ((my->limit>0 && my->samples > my->limit) /* limit reached */
        || write_multi_recorder(my, ts, my->last.value)==0) /* write failed */
    {
        close_multi_recorder(my);
        my->status = TS_DONE;
    }
    else
        my->samples++;

    /* at this point we've written the sample to the normal recorder output */

    // if file based
    if(my->multifp != NULL){
        char1024 inbuffer;
        char1024 outbuffer;
        char *lasts = 0;
        char *in_ts = 0;
        char *in_tok = 0;

        memset(inbuffer, 0, sizeof(inbuffer));
        
        if(my->inputfp != NULL){
            // read line
            do{
                if(0 == fgets(inbuffer, 1024, my->inputfp)){
                    if(feof(my->inputfp)){
                        // if there is no more data to append rows to, we're done with the aggregate 
                        //fclose(my->multifp); // happens in close()
                        //fclose(my->inputfp); // one-over read never happens
                        return TS_NEVER;
                    } else {
                        gl_error("multirecorder: error reading past recordings file");
                        my->status = TS_ERROR;
                        return TS_NEVER;
                    }
                }
                // if first char == '#', re-read
            } while(inbuffer[0] == '#');
            
            // NOTE: this is not thread safe!
            // split on first comma
            in_ts = strtok_s(inbuffer, ",\n", &lasts);
            in_tok = strtok_s(NULL, "\n", &lasts);

            if(in_ts == NULL){
                gl_error("multirecorder: unable to indentify a timestamp within the line read from ");
            }

            // compare timestamps if my->format == 0
                //  warn if timestamps mismatch
            if(strcmp(in_ts, ts) != 0){
                gl_warning("multirecorder: timestamp mismatch between current input line and simulation time");
            }
            sprintf(outbuffer, "%s,%s", in_tok, my->last.value);
        } else { // no input file ~ write normal output
            strcpy(outbuffer, my->last.value);
        }
        // fprintf 
        fprintf(my->multifp, "%s,%s\n", ts, outbuffer);
    }
    return TS_NEVER;
}

RECORDER_MAP *link_multi_properties(OBJECT *obj, char *property_list)
{
    char *itemptr, *item;
    char objstr[128];
    char itemstr[128];
    RECORDER_MAP *first=NULL, *last=NULL, *rmap;
    OBJECT *target_obj = NULL;
    UNIT *unit = NULL;
    char1024 list;
    complex oblig;
    int partres = 0;
    char name[128];
    char256 pstr, ustr;
    char *cpart = 0;
    int64 cid = -1;
    PROPERTY *prop = NULL;
    PROPERTY *target = NULL;
    double scale = 1.0;

    strcpy(list,property_list); /* avoid destroying orginal list */
    for (itemptr = strtok(list,","); itemptr != NULL; itemptr = strtok(NULL,","))
    {
        cpart = 0;
        cid = -1;
        prop = NULL;
        target = NULL;
        scale = 1.0;
        ustr[0] = 0;
        pstr[0] = 0;
        unit = NULL;

        //if(2 == sscanf(itemptr, "%[^:]:%[^\n\r\0]", objstr, itemstr)){
        if(2 == sscanf(itemptr, " %[^:]:%s", objstr, itemstr)){ //changed this line because of conflicts in rh5
            item = itemstr;
            target_obj = gl_get_object(objstr);
            if(target_obj == 0){
                gl_error("multirecorder: unable to find object '%s'", objstr);
                return 0;
            }
        } else { // only the one part
            if(obj == 0){
                gl_error("multirecorder: no parent object and no specified target object in '%s'", itemstr);
                return 0;
            }
            target_obj = obj;
            item = objstr;
        }

        // everything that looks like a property name, then read units up to ]
        while (isspace(*item)) item++;
        if(2 == sscanf(item,"%[A-Za-z0-9_.][%[^]\n,\0]", pstr, ustr)){
            unit = gl_find_unit(ustr);
            if(unit == NULL){
                gl_error("multirecorder: unable to find unit '%s' for property '%s' in object '%s %i'", ustr,pstr,target_obj->oclass->name, target_obj->id);
                return NULL;
            }
            item = pstr;
        }
        rmap = (RECORDER_MAP *)malloc(sizeof(RECORDER_MAP));
        memset(rmap, 0, sizeof(RECORDER_MAP));
        
        /* branch: test to see if we're trying to split up a complex property */
        /* must occur w/ *cpart=0 before gl_get_property in order to properly reformat the property name string */
        cpart = strchr(item, '.');
        if(cpart != NULL){
            if(strcmp("imag", cpart+1) == 0){
                cid = (int)((int64)&(oblig.i) - (int64)&oblig);
                *cpart = 0;
            } else if(strcmp("real", cpart+1) == 0){
                cid = (int)((int64)&(oblig.r) - (int64)&oblig);
                *cpart = 0;
            } else {
                ;
            }
        }

        target = gl_get_property(target_obj,item,NULL);

        if (rmap != NULL && target != NULL)
        {
            if(unit != NULL && target->unit == NULL){
                gl_error("recorder:%d: property '%s' is unitless, ignoring unit conversion", obj->id, item);
            }
            else if(unit != NULL && 0 == gl_convert_ex(target->unit, unit, &scale))
            {
                gl_error("recorder:%d: unable to convert property '%s' units to '%s'", obj->id, item, ustr);
                return NULL;
            }
            if(first == NULL){
                first = rmap;
            } else {
                last->next=rmap;
            }
            last = rmap;
            rmap->obj = target_obj;
            memcpy(&(rmap->prop), target, sizeof(PROPERTY));
            rmap->prop.unit = unit;
            rmap->next = NULL;
        }
        else
        {
            gl_name_object(target_obj, name, 128);
            gl_error("multirecorder: property '%s' not found in object '%s'", item, name);
            return NULL;
        }
        if(cid >= 0){ /* doing the complex part thing */
            rmap->prop.ptype = PT_double;
            (rmap->prop.addr) = (PROPERTYADDR)((int64)(rmap->prop.addr) + cid);
        }
    }
    return first;
}

int read_multi_properties(struct recorder *my, OBJECT *obj, RECORDER_MAP *rmap, char *buffer, int size)
{
    RECORDER_MAP *r;
    int offset = 0;
    int count = 0;
    double value;
    PROPERTY *p2 = 0;
    PROPERTY fake;
    memset(&fake, 0, sizeof(PROPERTY));
    fake.ptype = PT_double;
    fake.unit = 0;
    for(r = rmap; r != NULL && offset < size - 33; r = r->next){
        if(offset > 0){
            strcpy(buffer+offset++,",");
        }
//      offset += gl_get_value(r->obj, GETADDR(r->obj, &(r->prop)), buffer + offset, size - offset - 1, &(r->prop)); /* pointer => int64 */
        if(r->prop.ptype == PT_double){
            switch(my->line_units){
                case LU_ALL:
                    // cascade into 'default', as prop->unit should've been set, if there's a unit available.
                case LU_DEFAULT:
                    offset+=gl_get_value(r->obj,GETADDR(r->obj,&(r->prop)),buffer+offset,size-offset-1,&(r->prop)); /* pointer => int64 */
                    break;
                case LU_NONE:
                    // copy value into local value, use fake PROP, feed into gl_get_vaule
                    value = *gl_get_double(r->obj, &(r->prop));
                    p2 = gl_get_property(r->obj, r->prop.name,NULL);
                    if(p2 == 0){
                        gl_error("unable to locate %s.%s for LU_NONE", r->obj, r->prop.name);
                        return 0;
                    }
                    if(r->prop.unit != 0 && p2->unit != 0){
                        if(0 == gl_convert_ex(p2->unit, r->prop.unit, &value)){
                            gl_error("unable to convert %s to %s for LU_NONE", r->prop.unit, p2->unit);
                        } else { // converted
                            offset+=gl_get_value(r->obj,&value,buffer+offset,size-offset-1,&fake); /* pointer => int64 */;
                        }
                    } else {
                        offset+=gl_get_value(r->obj,GETADDR(r->obj,&(r->prop)),buffer+offset,size-offset-1,&(r->prop)); /* pointer => int64 */;
                    }
                    break;
                default:
                    break;
            }
        } else {
          //offset += gl_get_value(obj,    GETADDR(obj,    p),          buffer+offset, size-offset-1, p); /* pointer => int64 */
            offset += gl_get_value(r->obj, GETADDR(r->obj, &(r->prop)), buffer+offset, size-offset-1, &(r->prop)); /* pointer => int64 */
        }
        buffer[offset] = '\0';
        count++;
    }
    return count;
}

EXPORT TIMESTAMP sync_multi_recorder(OBJECT *obj, TIMESTAMP t0, PASSCONFIG pass)
{
    struct recorder *my = OBJECTDATA(obj,struct recorder);
    typedef enum {NONE='\0', LT='<', EQ='=', GT='>'} COMPAREOP;
    COMPAREOP comparison;
    char1024 buffer = "";
    
    if (my->status==TS_DONE)
    {
        close_multi_recorder(my); /* note: potentially called every sync pass for multiple timesteps, catch fp==NULL in tape ops */
        return TS_NEVER;
    }

    /* legitimate to lack a parent by the definition of a multi-recorder.  -MH */
    /*
    if(obj->parent == NULL){
        char tb[32];
        sprintf(buffer, "'%s' lacks a parent object", obj->name ? obj->name : tb, sprintf(tb, "recorder:%i", obj->id));
        close_recorder(my);
        my->status = TS_ERROR;
        goto Error;
    }*/

    if(my->last.ts < 1 && my->interval != -1)
        my->last.ts = t0;

    /* connect to property */
    if (my->rmap==NULL){
        my->rmap = link_multi_properties(obj->parent,my->property); // allowable use of obj->parent
    }
    /*  invalid target object must be handled individually */
    /*if (my->target==NULL)
    {
        sprintf(buffer,"'%s' contains a property of %s %d that is not found", my->property, obj->parent->oclass->name, obj->parent->id);
        close_multi_recorder(my);
        my->status = TS_ERROR;
        goto Error;
    }*/

    if (my->rmap==NULL)
    {
        sprintf(buffer,"'%s' contains a property reference that was not found", my->property);
        close_multi_recorder(my);
        my->status = TS_ERROR;
        goto Error;
    }

    // update clock
    if ((my->status==TS_OPEN) && (t0 > obj->clock)) 
    {   
        obj->clock = t0;
        // if the recorder is clock-based, write the value
        if((my->interval > 0) && (my->last.ts < t0) && (my->last.value[0] != 0)){
            multi_recorder_write(obj);
            my->last.value[0] = 0; // once it's been finalized, dump it
        }
    }

    /* update property value */
    if ((my->rmap != NULL) && (my->interval == 0 || my->interval == -1)){   
        if(read_multi_properties(my, obj->parent,my->rmap,buffer,sizeof(buffer))==0) // vestigal use of parent
        {
            //sprintf(buffer,"unable to read property '%s' of %s %d", my->property, obj->parent->oclass->name, obj->parent->id);
            sprintf(buffer,"unable to read a property");
            close_multi_recorder(my);
            my->status = TS_ERROR;
        }
    }
    if ((my->rmap != NULL) && (my->interval > 0)){
        if((t0 >=my->last.ts + my->interval) || (t0 == my->last.ts)){
            if(read_multi_properties(my, obj->parent,my->rmap,buffer,sizeof(buffer))==0)
            {
                //sprintf(buffer,"unable to read property '%s' of %s %d", my->property, obj->parent->oclass->name, obj->parent->id);
                sprintf(buffer,"unable to read a property");
                close_multi_recorder(my);
                my->status = TS_ERROR;
            }
            my->last.ts = t0;
        }
    }

    /* check trigger, if any */
    comparison = (COMPAREOP)my->trigger[0];
    if (comparison!=NONE)
    {
        int desired = comparison==LT ? -1 : (comparison==EQ ? 0 : (comparison==GT ? 1 : -2));

        /* if not trigger or can't get access */
        int actual = strcmp(buffer,my->trigger+1);
        if (actual!=desired || (my->status==TS_INIT && !multi_recorder_open(obj)))
        {
            /* better luck next time */
            return (my->interval==0 || my->interval==-1) ? TS_NEVER : t0+my->interval;
        }
    }
    else if (my->status==TS_INIT && !multi_recorder_open(obj))
    {
        close_multi_recorder(my);
        return TS_NEVER;
    }

    if(my->last.ts < 1 && my->interval != -1)
        my->last.ts = t0;

    /* write tape */
    if (my->status==TS_OPEN)
    {   
        if (my->interval==0 /* sample on every pass */
            || ((my->interval==-1) && my->last.ts!=t0 && strcmp(buffer,my->last.value)!=0) /* sample only when value changes */
            )

        {
            strncpy(my->last.value,buffer,sizeof(my->last.value));
            my->last.ts = t0;
            multi_recorder_write(obj);
        } else if (my->interval > 0 && my->last.ts == t0){
            strncpy(my->last.value,buffer,sizeof(my->last.value));
        }
    }
Error:
    if (my->status==TS_ERROR)
    {
        gl_error("recorder %d %s\n",obj->id, buffer);
        close_multi_recorder(my);
        my->status=TS_DONE;
        return TS_NEVER;
    }

    if (my->interval==0 || my->interval==-1) 
    {
        return TS_NEVER;
    }
    else
    {
        return my->last.ts+my->interval;
    }
}

---

GridLAB-D™ Version 4.1

An open-source smart grid simulator created by PNNL for the US Department of Energy Office of Electricity