Merge another change from team/russell/events
This commit breaks out some logic from pbx.c into a simple API. The hint processing code had logic for taking the state from multiple devices and turning that into the state for a single extension. So, I broke this out and made an API that lets you take multiple device states and determine the aggregate device state. I needed this for some core device state changes to support distributed device state. git-svn-id: http://svn.digium.com/svn/asterisk/trunk@121501 f38db490-d61c-443f-a65b-d21fe96a405b
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@ -196,6 +196,54 @@ int ast_devstate_prov_add(const char *label, ast_devstate_prov_cb_type callback)
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*/
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int ast_devstate_prov_del(const char *label);
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/*!
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* \brief An object to hold state when calculating aggregate device state
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*/
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struct ast_devstate_aggregate;
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/*!
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* \brief Initialize aggregate device state
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*
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* \arg agg the state object
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*
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* \return nothing
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*/
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void ast_devstate_aggregate_init(struct ast_devstate_aggregate *agg);
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/*!
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* \brief Add a device state to the aggregate device state
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*
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* \arg agg the state object
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* \arg state the state to add
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*
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* \return nothing
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*/
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void ast_devstate_aggregate_add(struct ast_devstate_aggregate *agg, enum ast_device_state state);
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/*!
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* \brief Get the aggregate device state result
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*
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* \arg agg the state object
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*
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* \return the aggregate device state after adding some number of device states.
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*/
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enum ast_device_state ast_devstate_aggregate_result(struct ast_devstate_aggregate *agg);
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/*!
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* \brief You shouldn't care about the contents of this struct
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*
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* This struct is only here so that it can be easily declared on the stack.
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*/
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struct ast_devstate_aggregate {
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unsigned int all_unavail:1;
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unsigned int all_busy:1;
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unsigned int all_free:1;
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unsigned int all_on_hold:1;
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unsigned int busy:1;
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unsigned int in_use:1;
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unsigned int ring:1;
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};
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#if defined(__cplusplus) || defined(c_plusplus)
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}
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#endif
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@ -551,3 +551,91 @@ int ast_device_state_engine_init(void)
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return 0;
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}
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void ast_devstate_aggregate_init(struct ast_devstate_aggregate *agg)
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{
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memset(agg, 0, sizeof(*agg));
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agg->all_unavail = 1;
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agg->all_busy = 1;
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agg->all_free = 1;
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agg->all_on_hold = 1;
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}
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void ast_devstate_aggregate_add(struct ast_devstate_aggregate *agg, enum ast_device_state state)
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{
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switch (state) {
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case AST_DEVICE_NOT_INUSE:
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agg->all_unavail = 0;
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agg->all_busy = 0;
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agg->all_on_hold = 0;
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break;
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case AST_DEVICE_INUSE:
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agg->in_use = 1;
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agg->all_busy = 0;
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agg->all_unavail = 0;
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agg->all_free = 0;
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agg->all_on_hold = 0;
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break;
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case AST_DEVICE_RINGING:
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agg->ring = 1;
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agg->all_busy = 0;
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agg->all_unavail = 0;
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agg->all_free = 0;
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agg->all_on_hold = 0;
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break;
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case AST_DEVICE_RINGINUSE:
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agg->in_use = 1;
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agg->ring = 1;
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agg->all_busy = 0;
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agg->all_unavail = 0;
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agg->all_free = 0;
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agg->all_on_hold = 0;
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break;
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case AST_DEVICE_ONHOLD:
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agg->all_unavail = 0;
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agg->all_free = 0;
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break;
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case AST_DEVICE_BUSY:
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agg->all_unavail = 0;
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agg->all_free = 0;
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agg->all_on_hold = 0;
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agg->busy = 1;
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break;
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case AST_DEVICE_UNAVAILABLE:
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case AST_DEVICE_INVALID:
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agg->all_busy = 0;
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agg->all_free = 0;
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agg->all_on_hold = 0;
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break;
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case AST_DEVICE_UNKNOWN:
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break;
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}
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}
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enum ast_device_state ast_devstate_aggregate_result(struct ast_devstate_aggregate *agg)
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{
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if (agg->all_free)
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return AST_DEVICE_NOT_INUSE;
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if (agg->all_on_hold)
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return AST_DEVICE_ONHOLD;
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if (agg->all_busy)
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return AST_DEVICE_BUSY;
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if (agg->all_unavail)
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return AST_DEVICE_UNAVAILABLE;
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if (agg->ring)
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return agg->in_use ? AST_DEVICE_RINGINUSE : AST_DEVICE_RINGING;
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if (agg->in_use)
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return AST_DEVICE_INUSE;
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if (agg->busy)
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return AST_DEVICE_BUSY;
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return AST_DEVICE_NOT_INUSE;
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}
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89
main/pbx.c
89
main/pbx.c
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@ -2798,7 +2798,7 @@ static void pbx_substitute_variables_helper_full(struct ast_channel *c, struct v
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} else
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ast_log(LOG_ERROR, "Unable to allocate bogus channel for variable substitution. Function results may be blank.\n");
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}
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ast_debug(1, "Function result is '%s'\n", cp4 ? cp4 : "(null)");
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ast_debug(2, "Function result is '%s'\n", cp4 ? cp4 : "(null)");
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} else {
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/* Retrieve variable value */
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pbx_retrieve_variable(c, vars, &cp4, workspace, VAR_BUF_SIZE, headp);
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@ -3041,82 +3041,41 @@ static int ast_extension_state2(struct ast_exten *e)
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{
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char hint[AST_MAX_EXTENSION] = "";
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char *cur, *rest;
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int allunavailable = 1, allbusy = 1, allfree = 1, allonhold = 1;
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int busy = 0, inuse = 0, ring = 0;
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struct ast_devstate_aggregate agg;
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enum ast_device_state state;
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if (!e)
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return -1;
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ast_devstate_aggregate_init(&agg);
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ast_copy_string(hint, ast_get_extension_app(e), sizeof(hint));
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rest = hint; /* One or more devices separated with a & character */
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while ( (cur = strsep(&rest, "&")) ) {
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int res = ast_device_state(cur);
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switch (res) {
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case AST_DEVICE_NOT_INUSE:
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allunavailable = 0;
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allbusy = 0;
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allonhold = 0;
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break;
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case AST_DEVICE_INUSE:
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inuse = 1;
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allunavailable = 0;
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allfree = 0;
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allonhold = 0;
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break;
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case AST_DEVICE_RINGING:
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ring = 1;
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allunavailable = 0;
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allfree = 0;
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allonhold = 0;
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break;
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case AST_DEVICE_RINGINUSE:
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inuse = 1;
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ring = 1;
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allunavailable = 0;
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allfree = 0;
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allonhold = 0;
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break;
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case AST_DEVICE_ONHOLD:
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allunavailable = 0;
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allfree = 0;
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break;
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case AST_DEVICE_BUSY:
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allunavailable = 0;
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allfree = 0;
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allonhold = 0;
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busy = 1;
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break;
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case AST_DEVICE_UNAVAILABLE:
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case AST_DEVICE_INVALID:
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allbusy = 0;
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allfree = 0;
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allonhold = 0;
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break;
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default:
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allunavailable = 0;
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allbusy = 0;
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allfree = 0;
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allonhold = 0;
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}
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}
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if (!inuse && ring)
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return AST_EXTENSION_RINGING;
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if (inuse && ring)
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return (AST_EXTENSION_INUSE | AST_EXTENSION_RINGING);
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if (inuse)
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return AST_EXTENSION_INUSE;
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if (allfree)
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return AST_EXTENSION_NOT_INUSE;
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if (allonhold)
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while ( (cur = strsep(&rest, "&")) )
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ast_devstate_aggregate_add(&agg, ast_device_state(cur));
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state = ast_devstate_aggregate_result(&agg);
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switch (state) {
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case AST_DEVICE_ONHOLD:
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return AST_EXTENSION_ONHOLD;
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if (allbusy)
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case AST_DEVICE_BUSY:
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return AST_EXTENSION_BUSY;
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if (allunavailable)
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case AST_DEVICE_UNAVAILABLE:
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return AST_EXTENSION_UNAVAILABLE;
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if (busy)
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case AST_DEVICE_RINGINUSE:
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return (AST_EXTENSION_INUSE | AST_EXTENSION_RINGING);
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case AST_DEVICE_RINGING:
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return AST_EXTENSION_RINGING;
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case AST_DEVICE_INUSE:
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return AST_EXTENSION_INUSE;
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case AST_DEVICE_UNKNOWN:
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case AST_DEVICE_INVALID:
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case AST_DEVICE_NOT_INUSE:
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return AST_EXTENSION_NOT_INUSE;
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}
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return AST_EXTENSION_NOT_INUSE;
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}
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